Spray drying granulator

Abstract

The utility model relates to a spray drying granulator, which belongs to the technical field of granulation equipment and comprises a base, a drying cylinder fixedly connected to the top of the base, a trapezoidal trapping bag fixedly mounted in the drying cylinder and a mixing tank fixedly connected to the top of the base. An air inlet pipe extending into the drying cylinder is fixedly connected to the output end of the hot-air blower, a flapping dust removal mechanism used for flapping the trapezoidal trapping bag is arranged in the drying cylinder, and a driving mechanism which extends to the outside of the air inlet pipe and is used for driving the dust removal mechanism is arranged in the air inlet pipe. According to the spray drying granulator, when the hot-air blower works, the annular flapping plate reciprocates back and forth under the elastic restoring force of the first spring and the second spring, the trapezoidal trapping bag is flapped in a reciprocating manner, complementary energy utilization of the hot-air blower, elastic energy storage flapping and closed-loop powder recovery are realized, and the advantages of high granulation efficiency and good cleaning effect are achieved.

Description

Technical Field

[0001] This utility model relates to the field of granulation equipment technology, specifically a spray drying granulator. Background Technology

[0002] Spray drying is a common drying technique that dries liquid medicine by spraying it into tiny particles and exposing them to a high-temperature, low-humidity environment, causing the moisture to evaporate.

[0003] Spray drying granulators are needed in the production of liquid pharmaceuticals. Chinese utility model patent CN220002972U discloses a spray drying granulator, which includes a base plate, a drying cylinder inserted into the top of the base plate, a first motor connected to the top of the drying cylinder, the output shaft of the first motor passing through the top of the drying cylinder and connected to a fixing rod, an L-shaped connecting rod fixedly connected to the bottom of the fixing rod, a cleaning scraper connected to the end of the L-shaped connecting rod near the drying cylinder, the cleaning scraper being slidably connected to the inner wall of the drying cylinder, a collection bag connected to the bottom of the fixing rod, and a spring fixedly connected to the inner wall of the drying cylinder.

[0004] However, the collection bag of the spray dryer granulator is not attached to the inner wall of the drying cylinder, which can easily cause the powder to rise and escape. In addition, the dust removal method of the device relies on the tapping of the tapping plate, which has problems such as low efficiency, incomplete dust removal and high energy consumption. Therefore, a spray dryer granulator is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a spray drying granulator with advantages such as high granulation efficiency and good cleaning effect. It solves the problems of existing spray drying granulators where the collection bag is not attached to the inner wall of the drying cylinder, which easily leads to powder rising and escaping, and the dust removal method of the device relies on a striking plate, which has the problems of low efficiency, incomplete dust removal, and high energy consumption.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A spray drying granulator includes a base, a drying cylinder fixedly connected to the top of the base, a trapezoidal collection bag fixedly installed inside the drying cylinder, and a mixing tank fixedly connected to the top of the base. A hot air blower is fixedly installed on the top of the base, and an air inlet pipe extending into the drying cylinder is fixedly connected to the output end of the hot air blower. The drying cylinder is provided with a beating and dust removal mechanism for beating the trapezoidal collection bag, and the air inlet pipe is provided with a drive mechanism extending to the outside for driving the cleaning mechanism.

[0008] The tapping and dust removal mechanism includes a first spring fixedly connected to the inner wall of the drying cylinder, an annular tapping plate fixedly connected to the right side of the first spring, a second spring fixedly installed to the right side of the annular tapping plate, a connecting plate fixedly connected to the end of the second spring away from the annular tapping plate, and a connecting rope extending to the outside of the drying cylinder fixedly connected to the outside of the connecting plate.

[0009] The drive mechanism includes a rotating shaft rotatably connected to the inside of the air inlet pipe and extending to its outside. A roller is rotatably connected to the outside of the rotating shaft. Four wind vanes are fixedly connected to the outside of the roller. A take-up reel is fixedly installed on the outside of the rotating shaft.

[0010] Furthermore, the annular striking plate is a hollow cylinder, and the outer diameter of the trapezoidal collecting bag is adapted to the inner diameter of the annular striking plate.

[0011] Furthermore, the drying cylinder has a movable hole inside that is compatible with the connecting rope, a fixed frame is fixedly connected to the outside of the drying cylinder, a guide wheel is rotatably connected inside the fixed frame, and the connecting rope is drivenly connected to the outside of the guide wheel.

[0012] Furthermore, the roller and the wind vane are both rotatably connected to the inside of the air inlet pipe, the take-up reel is rotatably connected to the outside of the air inlet pipe, and the connecting rope is connected to the outside of the take-up reel.

[0013] Furthermore, a one-way valve is fixedly installed between the air inlet pipe and the drying cylinder, and a discharge port is fixedly connected to the bottom of the drying cylinder.

[0014] Furthermore, a booster pump is fixedly installed on the top of the base, and a delivery pipe extending into the inside of the drying cylinder is fixedly connected to the output end of the booster pump. An atomizing nozzle is fixedly connected to the end of the delivery pipe away from the booster pump.

[0015] Furthermore, the top of the mixing tank is provided with a stirring mechanism extending into it. The stirring mechanism includes a drive motor fixedly installed on the top of the mixing tank. The output shaft of the drive motor passes through the top of the mixing tank and extends into it. A stirring rod is fixedly connected to the output end of the drive motor.

[0016] Furthermore, the bottom of the base is fixedly connected to four support rods, which are distributed in a rectangular shape at the bottom of the base.

[0017] Compared with the prior art, the present invention provides a spray drying granulator with the following advantages:

[0018] 1. When the spray dryer granulator is working, hot air enters the drying cylinder through the air inlet pipe, simultaneously driving the air vane and rotating shaft to rotate and transmit the air to the drum. The drum drives the take-up reel to rotate, and the take-up reel pulls the annular beater plate to the right through the connecting rope, compressing the first and second springs. The elastic restoring force of the first and second springs causes the annular beater plate to move back and forth, repeatedly beating the trapezoidal collection bag. This causes the powder in the trapezoidal collection bag to fall off under the beating action and re-enter the drying cylinder. This achieves the utilization of the hot air blower's residual energy, elastic energy storage beating, and closed-loop powder recovery, resulting in high granulation efficiency and good cleaning effect.

[0019] 2. This spray drying granulator, activated by a controller, uses a booster pump to deliver the mixture from the mixing tank to the atomizing nozzle via a conveying pipe. The high-pressure liquid is atomized into tiny droplets, which rapidly dry into granules upon contact with hot air. A one-way valve effectively prevents backflow of air, ensuring unidirectional airflow. This helps maintain pressure within the drying cylinder, preventing backflow from interfering with the system. It also allows for elastic energy storage on the take-up reel, enabling the annular beater plate to more powerfully beat the trapezoidal collection bag, improving the beating effect and achieving strong practicality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the structure of the drying cylinder and air inlet pipe of this utility model;

[0022] Figure 3 This is a three-dimensional structural view of the drive mechanism of this utility model.

[0023] In the diagram: 1. Base; 2. Drying cylinder; 3. Trapezoidal collection bag; 4. Mixing tank; 5. Hot air blower; 6. Air inlet pipe; 7. First spring; 8. Annular beater plate; 9. Second spring; 10. Connecting plate; 11. Connecting rope; 12. Rotating shaft; 13. Drum; 14. Air vane; 15. Take-up reel; 16. Fixing frame; 17. Guide wheel; 18. One-way valve; 19. Stirring mechanism; 20. Booster pump; 21. Conveying pipe; 22. Atomizing nozzle; 23. Discharge port. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1 to 3 This embodiment of a spray drying granulator includes a base 1, a drying cylinder 2 fixedly connected to the top of the base 1, a trapezoidal collection bag 3 fixedly installed inside the drying cylinder 2, and a mixing tank 4 fixedly connected to the top of the base 1. A hot air blower 5 is fixedly installed on the top of the base 1. An air inlet pipe 6 extending into the drying cylinder 2 is fixedly connected to the output end of the hot air blower 5. A beating and dust removal mechanism for beating the trapezoidal collection bag 3 is provided inside the drying cylinder 2. A driving mechanism for driving the cleaning mechanism is provided inside the air inlet pipe 6 extending to its outside. The beating and dust removal mechanism includes a first spring 7 fixedly connected to the inner wall of the drying cylinder 2. An annular beating plate 8 is fixedly connected to the right side of the first spring 7. A second spring 9 is fixedly installed to the right side of the annular beating plate 8. A connecting plate 10 is fixedly connected to the end of the second spring 9 away from the annular beating plate 8. A connecting rope 11 extending to the outside of the drying cylinder 2 is fixedly connected to the outside of the connecting plate 10.

[0026] The annular beater plate 8 is a hollow cylinder, and the outer diameter of the trapezoidal collection bag 3 is adapted to the inner diameter of the annular beater plate 8. The drying cylinder 2 has a movable hole adapted to the connecting rope 11 inside. A fixing frame 16 is fixedly connected to the outside of the drying cylinder 2. A guide wheel 17 is rotatably connected inside the fixing frame 16, and the connecting rope 11 is drivenly connected to the outside of the guide wheel 17.

[0027] Specifically, the roller 13 and the air vane 14 are rotatably connected to the inside of the air inlet pipe 6, the take-up reel 15 is rotatably connected to the outside of the air inlet pipe 6, and the connecting rope 11 is driven to the outside of the take-up reel 15. The hot air blower 5 is started by the controller, allowing hot air to enter the drying cylinder 2 through the air inlet pipe 6. Simultaneously, the air vane 14 and the rotating shaft 12 rotate, transmitting the rotation to the roller 13. The roller 13 drives the take-up reel 15 to rotate, and the take-up reel 15, through the connecting rope 11, pulls the annular striking plate 8 to the right, compressing the first spring 7 and the second spring 9. When the hot air blower 5 stops working, the air vane 14 stops rotating, and the take-up reel 15 no longer rotates. The elastic restoring force of the first spring 7 and the second spring 9 causes the annular striking plate 8 to move back and forth, repeatedly striking the trapezoidal collection bag 3. This causes the powder inside the trapezoidal collection bag 3 to fall off under the striking action and re-enter the drying cylinder 2, thus realizing the utilization of the residual energy of the hot air blower 5, elastic energy storage striking, and closed-loop powder recovery.

[0028] It should be noted that a one-way valve 18 is fixedly installed between the air inlet pipe 6 and the drying cylinder 2, and a discharge port 23 is fixedly connected to the bottom of the drying cylinder 2.

[0029] Please see Figures 1 to 2 In this embodiment, a booster pump 20 is fixedly installed on the top of the base 1. A delivery pipe 21 extending into the inside of the drying cylinder 2 is fixedly connected to the output end of the booster pump 20. An atomizing nozzle 22 is fixedly connected to the end of the delivery pipe 21 away from the booster pump 20.

[0030] Please see Figure 1 In this embodiment, a stirring mechanism 19 extending into the top of the mixing tank 4 is provided. The stirring mechanism 19 includes a drive motor fixedly installed on the top of the mixing tank 4. The output shaft of the drive motor passes through the top of the mixing tank 4 and extends into its interior. A stirring rod is fixedly connected to the output end of the drive motor. A feeding hopper is fixedly connected to the top of the mixing tank 4.

[0031] The base 1 has four support rods fixedly connected to its bottom, and the four support rods are distributed in a rectangular shape at the bottom of the base 1.

[0032] The working principle of the above embodiments is as follows:

[0033] When in use, the medicine to be dried is added to the mixing tank 4 through the feeding hopper, and the stirring mechanism 19 is started by the controller to stir it thoroughly. The stirred medicine is then transported to the atomizing nozzle 22 by the booster pump 20 through the delivery pipe 21. The atomizing nozzle 22 atomizes the medicine into fine droplets and sprays them into the drying cylinder 2. Hot air blower 5 delivers hot air into drying cylinder 2, rapidly drying droplets into granules. The dried granules are collected through trapezoidal collection bag 3, which is tightly fitted to the inner wall of drying cylinder 2. The hot air blower 5 is started by the controller, and hot air enters drying cylinder 2 through air inlet pipe 6. At the same time, it drives air vane 14 and rotating shaft 12 to rotate and transmit the air to roller 13. Roller 13 drives take-up reel 15 to rotate. Take-up reel 15 pulls annular beater 8 to the right through connecting rope 11, compressing the first spring 7 and the second spring 9. The elastic restoring force of the first spring 7 and the second spring 9 causes the annular beater 8 to move back and forth, repeatedly beating the trapezoidal collection bag 3. This causes the powder in the trapezoidal collection bag 3 to fall off under the beating action and re-enter drying cylinder 2 to continue participating in the granulation process, improving the utilization rate of the drug solution.

[0034] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0035] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are 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 a limitation of this application.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spray drying granulator, characterized in that: The device includes a base, a drying cylinder fixedly connected to the top of the base, a trapezoidal collection bag fixedly installed inside the drying cylinder, and a mixing tank fixedly connected to the top of the base. A hot air blower is fixedly installed on the top of the base, and an air inlet pipe extending into the drying cylinder is fixedly connected to the output end of the hot air blower. The drying cylinder is equipped with a beating and dust removal mechanism for beating the trapezoidal collection bag, and the air inlet pipe is equipped with a drive mechanism extending to the outside for driving the cleaning mechanism. The tapping and dust removal mechanism includes a first spring fixedly connected to the inner wall of the drying cylinder, an annular tapping plate fixedly connected to the right side of the first spring, a second spring fixedly installed to the right side of the annular tapping plate, a connecting plate fixedly connected to the end of the second spring away from the annular tapping plate, and a connecting rope extending to the outside of the drying cylinder fixedly connected to the outside of the connecting plate. The drive mechanism includes a rotating shaft rotatably connected to the inside of the air inlet pipe and extending to its outside. A roller is rotatably connected to the outside of the rotating shaft. Four wind vanes are fixedly connected to the outside of the roller. A take-up reel is fixedly installed on the outside of the rotating shaft.

2. The spray drying granulator according to claim 1, characterized in that: The annular striking plate is a hollow cylinder, and the outer diameter of the trapezoidal collection bag is adapted to the inner diameter of the annular striking plate.

3. The spray drying granulator according to claim 1, characterized in that: The drying cylinder has a movable hole inside that is compatible with the connecting rope. A fixed frame is fixedly connected to the outside of the drying cylinder. A guide wheel is rotatably connected inside the fixed frame. The connecting rope is driven to the outside of the guide wheel.

4. The spray drying granulator according to claim 1, characterized in that: The roller and wind vane are rotatably connected to the inside of the air inlet pipe, the take-up reel is rotatably connected to the outside of the air inlet pipe, and the connecting rope drive is connected to the outside of the take-up reel.

5. The spray drying granulator according to claim 1, characterized in that: A one-way valve is fixedly installed between the air inlet pipe and the drying cylinder, and a discharge port is fixedly connected to the bottom of the drying cylinder.

6. The spray drying granulator according to claim 1, characterized in that: A booster pump is fixedly installed on the top of the base. A delivery pipe extending into the inside of the drying cylinder is fixedly connected to the output end of the booster pump. An atomizing nozzle is fixedly connected to the end of the delivery pipe away from the booster pump.

7. A spray drying granulator according to claim 1, characterized in that: The mixing tank is provided with a stirring mechanism extending into its interior at the top. The stirring mechanism includes a drive motor fixedly installed at the top of the mixing tank. The output shaft of the drive motor passes through the top of the mixing tank and extends into its interior. A stirring rod is fixedly connected to the output end of the drive motor.

8. A spray drying granulator according to claim 1, characterized in that: The base has four support rods fixedly connected to its bottom, and the four support rods are distributed in a rectangular shape at the bottom of the base.

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