A drying device for a dry granulator

Abstract

This utility model relates to the field of dry granulation technology and discloses a drying device for a dry granulator, including a support frame. A granulation device is mounted on the top of the support frame. The input end of the granulation device is connected to the outside for feeding in the material to be granulated. The output end of the granulation device is connected to a drying mechanism for drying and classifying the material particles. The granulation device includes an inlet, the bottom of which is connected to a granulation chamber. A granulation assembly is installed inside the granulation chamber, and a discharge receiving plate is installed at the output end of the granulation chamber. In this utility model, the direct connection between the granulation device and the drying mechanism eliminates the intermediate step of "separately transferring granulated material to the drying equipment" found in traditional equipment. Simultaneously, particle classification is completed during the drying process, eliminating the need for additional classification equipment. The entire process, from raw material input to classified particle output, is seamlessly integrated, improving production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of dry granulation, in particular to a drying device for a dry granulator. Background Art

[0002] In current industrial production, dry granulation technology is widely used in many fields such as medicine, food, and chemical industry due to its advantage of not requiring the addition of binders or liquid components. Taking the pharmaceutical industry as an example, the granules obtained by dry granulation are commonly used in the dosage form processing of pharmaceutical tablets and capsules. In the whole process, the raw material powder is directly made into flakes by mechanical extrusion, and then the final granule products are obtained through processes such as crushing and shaping. However, there are many drawbacks in the drying devices supporting the existing dry granulation process, which urgently need to be improved.

[0003] There are defects in the structural design and air flow circulation mode of traditional drying devices. In common drying equipment, most of the granules are in a static or simple tumbling state during the drying process, making it difficult to fully contact with the hot air, resulting in low drying efficiency. Moreover, the air flow distribution inside the drying device is uneven, prone to local overheating or overcooling phenomena, which not only affects the drying effect of the granules but may also damage heat-sensitive materials (such as some biological products and food additives) due to excessive temperature, reducing the product quality. Summary of the Invention

[0004] To make up for the above deficiencies, the utility model provides a drying device for a dry granulator, aiming to improve the problem that in the existing technology, most of the granules are in a static or simple tumbling state during the drying process, making it difficult to fully contact with the hot air, resulting in low drying efficiency.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A drying device for a dry granulator includes a support frame, a granulation device is arranged at the top of the support frame, the input end of the granulation device is connected to the outside and is used for feeding the material to be granulated, and the output end of the granulation device is connected to a drying mechanism, which is used for drying and classifying the material granules.

[0006] As a further description of the above technical scheme:

[0007] The granulation device includes a feeding port, the bottom of the feeding port is connected to a granulation chamber, a granulation component is installed inside the granulation chamber, and a discharge connecting plate is installed at the output end of the granulation chamber.

[0008] As a further description of the above technical scheme:

[0009] The drying mechanism includes a drying chamber with a feed inlet at the top. One end of the feed inlet is connected to a discharge receiving plate, and the other end is connected to a collection port. A column is installed inside the drying chamber, and a sliding plate is fixedly connected to the outer wall of the column. An air duct is opened inside the sliding plate, and blowing ports are opened on both sides of the inside of the sliding plate. The air duct is connected to the blowing ports. An air pump is installed at the top of the drying chamber. The input end of the air pump is connected to the outside, and the output end of the air pump is connected to a ventilation duct.

[0010] As a further description of the above technical solution:

[0011] The surface of the sliding plate has sequentially formed material leakage holes, with the diameter of the leakage holes in each part arranged in ascending order.

[0012] As a further description of the above technical solution:

[0013] The bottom of the drying chamber is connected to the discharge chamber, and the discharge chamber is equipped with a partition that divides the discharge chamber into equal parts. The outlets of the multiple discharge chambers are equipped with extension plates.

[0014] As a further description of the above technical solution:

[0015] The surface of the blowing port is covered with a mesh screen.

[0016] As a further description of the above technical solution:

[0017] The discharge holes in the vertical direction of the sliding plate have the same diameter.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, the device directly connects the granulation unit and the drying mechanism, eliminating the intermediate step of "separately transferring the granulated material to the drying equipment" found in traditional equipment. Simultaneously, particle grading is completed during the drying process, eliminating the need for additional grading equipment. The entire process, from raw material input to graded particle output, is seamlessly integrated, reducing material transfer time and labor costs, and improving production efficiency.

[0020] 2. In this utility model, the airflow system composed of an air pump, air duct, and blowing port in the drying mechanism can both remove moisture from the particles through airflow to achieve drying and cause the particles to tumble on the surface of the sliding plate through the thrust of the airflow, preventing the particles from sticking together due to moisture. The mesh screen at the blowing port prevents blockage of the air duct and ensures stable airflow output. This design guarantees the dryness of the particles while avoiding morphological damage caused by particle sticking, thus ensuring the integrity of the particles.

[0021] 3. The discharge holes on the surface of the sliding plate are arranged in ascending order of diameter, and the diameter is the same in the vertical direction. This design achieves precise screening of particles of different sizes through a diameter gradient, preventing mixing of particles of different sizes. Furthermore, the consistent diameter in the vertical direction ensures that particles of the same size fall into the corresponding collection area regardless of their sliding position, further improving classification accuracy. This design can meet the differentiated needs of industries such as food, pharmaceuticals, and chemicals for particles of different sizes. Attached Figure Description

[0022] Figure 1 This is a perspective view of a drying device for a dry granulator proposed in this utility model;

[0023] Figure 2 This is a diagram illustrating a drying device for a dry granulator according to the present invention.

[0024] Figure 3 This is a schematic diagram of a drying device for a dry granulation machine proposed in this utility model;

[0025] Figure 4 This is an exploded view of a drying device for a dry granulator proposed in this utility model;

[0026] Figure 5 This is an enlarged view of section A of a drying device for a dry granulator proposed in this utility model.

[0027] Legend:

[0028] 1. Support frame; 2. Granulation device; 201. Feed inlet; 202. Granulation chamber; 203. Discharge receiving plate; 3. Drying mechanism; 301. Drying chamber; 302. Feed inlet; 303. Collection port; 304. Column; 305. Sliding plate; 306. Air duct; 307. Blowing port; 308. Air pump; 309. Leakage hole; 310. Discharge chamber; 311. Partition plate; 312. Extension plate; 313. Mesh. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1-5One embodiment of this utility model is a drying device for a dry granulator, including a support frame 1, a granulation device 2 on the top of the support frame 1, the input end of the granulation device 2 being connected to the outside and used to feed in the material to be granulated, and the output end of the granulation device 2 being connected to a drying mechanism 3, which is used to dry and classify the material particles.

[0031] The pelletizing device 2 includes an inlet 201, the bottom of which is connected to a pelletizing chamber 202. A pelletizing component is installed inside the pelletizing chamber 202, and a discharge receiving plate 203 is installed at the output end of the pelletizing chamber 202.

[0032] The drying mechanism 3 includes a drying chamber 301. The top of the drying chamber 301 has a feed inlet 302. One end of the feed inlet 302 is connected to the discharge receiving plate 203, and the other end of the feed inlet 302 is connected to the collection port 303. A column 304 is installed inside the drying chamber 301. A sliding plate 305 is fixedly connected to the outer wall of the column 304. An air duct 306 is opened inside the sliding plate 305. A blowing port 307 is opened on both sides inside the sliding plate 305. The air duct 306 is connected to the blowing port 307. An air pump 308 is installed on the top of the drying chamber 301. The input end of the air pump 308 is connected to the outside, and the output end of the air pump 308 is connected to the ventilation duct 306.

[0033] A mesh screen 313 is installed on the surface of the blowing port 307.

[0034] Specifically, the material is fed into the granulation chamber 202 through the inlet 201. The granulation component manufactures the material into granules, which are the feeding roller and crushing roller commonly used in the prior art. When the air pump 308 is started, it draws in air from the outside. The air is pressurized by the air pump 308 and sent into the air duct 306. The air duct 306 evenly distributes the airflow to the blowing ports 307 on both sides of the sliding plate 305. Finally, the airflow blows from the blowing ports 307 onto the granules on the surface of the sliding plate 305. At this time, the mesh 313 on the surface of the blowing ports 307 can effectively prevent granules from entering the air duct 306, avoiding blockage of the air duct 306, while ensuring smooth airflow, achieving drying and turning of the granules, and preventing the granules from sticking to the surface of the sliding plate 305.

[0035] Material leakage holes 309 are sequentially formed on the surface of the sliding plate 305, with the diameter of each leakage hole 309 arranged in ascending order.

[0036] The bottom of the drying chamber 301 is connected to the discharge chamber 310. The discharge chamber 310 is equipped with a partition 311, which divides the discharge chamber 310 evenly. The outlets of multiple discharge chambers 310 are equipped with extension plates 312.

[0037] The material discharge holes 309 in the vertical direction of the sliding plate 305 have the same diameter.

[0038] Specifically, as the particles slide on the sliding plate 305, they fall through the corresponding discharge holes 309 according to their different particle sizes: the smallest particles pass through the smallest discharge hole 309 first, and the slightly larger particles pass through the subsequent larger discharge holes 309 in sequence, achieving preliminary particle classification; the falling particles enter the discharge chamber 310 at the bottom of the drying chamber 301. Since the partition plate 311 evenly divides the discharge chamber 310, particles of different sizes are separated in different discharge chambers 310 to avoid mixing; finally, the particles in each discharge chamber 310 slide out through the extension plate 312 at the outlet. The extension plate 312 can guide the particles to accurately enter the subsequent collection container to prevent the particles from scattering. The discharge holes 309 in the vertical direction of the sliding plate 305 have the same diameter, so that during the sliding process, material particles of the same size fall vertically and enter the same segmented space of the discharge chamber 310.

[0039] In addition, the blowing ports 307 on both sides allow the particles to slide left and right on the surface of the sliding plate 305 during the drying process, increasing the amount of material falling through the discharge hole 309 and making the sorting effect of the material particles better.

[0040] Working principle: First, the operator feeds the dry powder material to be granulated through the inlet 201 of the granulation device 2. The material slides down through the inlet 201 into the granulation chamber 202. At this time, the granulation components (using the existing feed roller and crushing roller) in the granulation chamber 202 are activated: the feed roller first evenly conveys the loose dry powder material between the crushing rollers, and the crushing rollers form irregular initial particles through the pressure generated by their relative rotation. These initial particles finally slide smoothly to the drying mechanism 3 through the discharge plate 203 at the output end of the granulation chamber 202, completing the granulation stage.

[0041] When the initial particles enter the drying chamber 301 through the feed inlet 302 and are collected by the collection port 303, they fall onto the surface of the sliding plate 305, which is fixedly supported by the column 304. At this time, the air pump 308 at the top of the drying chamber 301 starts, drawing in ambient temperature air from the outside. After being pressurized by the air pump 308, the air is transported through pipes to the air duct 306 inside the sliding plate 305. The air duct 306 has a distributed design, which can evenly distribute the pressurized airflow to multiple blowing ports 307 opened on both sides of the sliding plate 305. The airflow is finally blown vertically from the blowing ports 307 onto the particles on the surface of the sliding plate 305.

[0042] On the one hand, the airflow acts directly on the surface of the particles, carrying away the moisture adsorbed by the particles and achieving drying. On the other hand, the thrust generated by the airflow keeps the particles slightly agitated on the surface of the sliding plate 305, preventing the particles from sticking to the sliding plate 305 due to moisture. At the same time, the mesh 313 installed on the surface of the blowing port 307 effectively prevents particles from entering the air duct 306, preventing air duct blockage, ensuring the continuity of airflow, and ensuring the stable operation of the drying process.

[0043] During airflow drying, the particles naturally slide down the inclined angle of the sliding plate 305 and enter the grading stage. Since the discharge holes 309 on the surface of the sliding plate 305 are arranged in ascending order of diameter, during the descent, the smallest particles will pass through the smallest discharge hole 309 at the front first, while slightly larger particles will pass through the subsequent larger discharge holes 309 in sequence, thus achieving preliminary screening of particles of different sizes.

[0044] Furthermore, the airflow from the two side nozzles 307 allows the particles to slide slightly left and right on the surface of the sliding plate 305, increasing the probability of contact between the particles and the discharge holes 309, reducing particle accumulation above the discharge holes 309, increasing the discharge volume, and further optimizing the sorting effect. Simultaneously, the discharge holes 309 in the vertical direction of the sliding plate 305 have the same diameter, ensuring that particles of the same size can fall through the corresponding discharge holes 309 regardless of their vertical position on the sliding plate 305, preventing particles of the same size from entering the wrong collection area due to positional differences.

[0045] The falling, graded particles enter the discharge chamber 310, which is connected to the bottom of the drying chamber 301. Inside the discharge chamber 310, a partition 311 evenly divides it into multiple independent spaces. Each space is aligned vertically with a set of corresponding aperture holes 309 on the sliding plate 305, ensuring that particles of different sizes fall into their respective independent spaces, preventing mixing. Finally, the graded and dried particles in each independent space slide into an external collection container through the extension plate 312 at the outlet of the discharge chamber 310, completing the entire "granulation-drying-grading" workflow.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 drying device for a dry granulation machine, comprising a support frame (1), characterized in that: The top of the support frame (1) is provided with a granulation device (2). The input end of the granulation device (2) is connected to the outside world and is used to feed the material to be granulated. The output end of the granulation device (2) is connected to a drying mechanism (3) which is used to dry and classify the material particles.

2. The drying device for a dry granulation machine according to claim 1, characterized in that: The pelletizing device (2) includes an inlet (201), the bottom of which is connected to a pelletizing chamber (202), a pelletizing component is installed inside the pelletizing chamber (202), and a discharge receiving plate (203) is installed at the output end of the pelletizing chamber (202).

3. The drying device for a dry granulation machine according to claim 2, characterized in that: The drying mechanism (3) includes a drying chamber (301), with a feed inlet (302) at the top of the drying chamber (301). One end of the feed inlet (302) is connected to a discharge receiving plate (203), and the other end of the feed inlet (302) is connected to a collection port (303). A column (304) is installed inside the drying chamber (301), and a sliding plate (305) is fixedly connected to the outer wall of the column (304). An air duct (306) is opened inside the sliding plate (305), and a blowing port (307) is opened on both sides inside the sliding plate (305). The air duct (306) is connected to the blowing port (307). An air pump (308) is installed at the top of the drying chamber (301), with the input end of the air pump (308) connected to the outside, and the output end of the air pump (308) connected to the ventilation duct (306).

4. The drying device for a dry granulation machine according to claim 3, characterized in that: The surface of the sliding plate (305) is provided with material leakage holes (309) in sequence, and the diameter of the material leakage holes (309) in each part is arranged in ascending order.

5. A drying device for a dry granulation machine according to claim 3, characterized in that: The bottom of the drying chamber (301) is connected to the discharge chamber (310), and the discharge chamber (310) is provided with a partition (311) inside. The partition (311) divides the discharge chamber (310) evenly, and the outlets of the multiple discharge chambers (310) are provided with extension plates (312).

6. A drying device for a dry granulation machine according to claim 3, characterized in that: The surface of the blowing port (307) is fitted with a mesh (313).

7. A drying device for a dry granulation machine according to claim 4, characterized in that: The material leakage holes (309) in the vertical direction of the sliding plate (305) have the same diameter.

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