Continuous liquid spraying flow granulation drying device

Abstract

The invention discloses a continuous liquid spraying flow granulation drying device which comprises a roller bed frame, a granulation bed, an isolation assembly and a coaxial driving assembly, the granulation bed is of a double-section structure, a granulation cabin and a drying cabin are sequentially arranged in the granulation bed, the granulation bed drives materials to turn over in a rolling mode, and the isolation assembly is arranged on the roller bed frame. And a first conveying spiral belt and a second conveying spiral belt which are arranged inside are matched to realize spiral propulsion of materials. A spraying strip group is arranged on the first conveying helical ribbon, is opposite to the helical ribbon in rotating direction and is connected into a liquid spraying system through a fixed guide ring, so that atomized liquid and materials are fully mixed and granulated. A blade valve in the isolation assembly can control the communication state of the granulation section and the drying section, and a heating plate and a steam exhaust hole are arranged in the drying cabin and used for efficiently drying the granules by distillation. The device is compact in structure, supports continuous operation of the whole process of granulation, liquid spraying and drying, effectively improves production efficiency, optimizes particle uniformity, reduces manual intervention and maintenance cost, and is suitable for particle preparation scenes in the industries of medicine, chemical engineering, food and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical production, and specifically to a continuous liquid spraying and flow granulation drying device. Background Art

[0002] At present, in the fields of chemical industry, pharmaceuticals, food, etc., the preparation of granular materials generally adopts a step-by-step granulation and drying process, which usually includes: after the material is pretreated, it is added to a granulator through a conveying device. After preliminary agglomeration, it is then conveyed to a drying device manually or mechanically for moisture evaporation treatment, and finally sorted and collected through a discharging system. Common structures are mostly combined layouts of a horizontal spiral granulator + a box-type hot air dryer or a vertical spray drying tower + a cooling conveyor line.

[0003] Although the above traditional devices have become mature in technology, when facing the requirements of high efficiency, continuous operation, and automation production, there are still the following significant problems: The traditional granulation equipment and drying equipment are set independently, and usually need to rely on manual handling or an intermediate transfer device to complete the material transfer in the middle. This not only increases the operation cost, but also easily causes interruptions, blockages, or material losses, and it is difficult to meet the requirements of high-efficiency continuous production. Since the liquid spraying system is mostly an external top spray head, it is difficult to achieve precise coordination with the material flow path, and the internal stirring means of the material is single, resulting in uneven mixing of the binder and the material, poor particle agglomeration, low product qualification rate, non-concentrated particle size distribution, and low forming rate.

[0004] Most traditional devices have a scattered structure and a single module. Each functional section is completed by different equipment, and the overall layout occupies a large area. Moreover, during daily cleaning and maintenance, the spray head needs to be frequently disassembled and the cavity needs to be checked, resulting in a long maintenance cycle, poor operation stability, and inapplicability to scenarios with rapid switching of multiple varieties..

[0005] In view of this, in order to study and improve the existing problems, a continuous liquid spraying and flow granulation drying device is provided to solve the current problems, aiming to achieve the purpose of solving problems and improving practical value through this technology. Summary of the Invention

[0006] In order to overcome the problems of low efficiency, complex operation, and uneven particles in the granulation and drying processes in the prior art, the present invention provides a liquid spraying and flow granulation drying device with a compact structure, functional linkage, and continuous high efficiency, realizing continuous processing of materials from the whole process of granulation, liquid spraying, isolation control, drying, and discharging, and having good automation and adaptability.

[0007] To this end, the technical solution adopted by the present invention is as follows: A continuous liquid spraying and flow granulation drying device, comprising: a rolling bed frame, a granulation bed, an isolation component, and a coaxial drive component fixed to one end of the granulation bed; a bearing frame for supporting the rotational movement of the granulation bed is provided on the surface of the rolling bed frame, and a speed reduction unit for driving the rotational movement of the granulation bed is provided on the surface of the rolling bed frame; The granulation bed is of a two-stage structure, respectively connected to both sides of the isolation component, and a granulation chamber and a drying chamber are respectively arranged inside. A feed ring is provided at one end of the granulation chamber, and a discharge ring is provided at one end of the drying chamber; a first conveying spiral belt and a second conveying spiral belt arranged coaxially are rotatably installed inside the granulation bed, respectively located inside the granulation chamber and the drying chamber; spray bar groups are arranged on the surface of the first conveying spiral belt, and the spiral direction of the spray bar groups is opposite to that of the first conveying spiral belt; both ends of the spray bar groups are connected to a transfer ring, and a fixed guide ring is rotatably sleeved outside the transfer ring, and a liquid inlet pipeline is connected to the surface of the fixed guide ring; A fixed ring is fixedly installed inside the isolation component, a plurality of paddle valves are arranged on the outer periphery of the fixed ring, the paddle valves penetrate through the crank rods on the outer side of the isolation component, a synchronous ring is rotatably sleeved on the outer periphery of the isolation component, and linkage pins slidably sleeved on the surface of the crank rods are provided on the surface of the synchronous ring; The coaxial drive component includes a transmission ball box, a second output shaft and a first output shaft respectively connected to the second conveying spiral belt and the first conveying spiral belt. The first output shaft is rotatably sleeved outside the second output shaft, and a second drive motor and a first drive motor for respectively driving the rotation of the first output shaft and the second output shaft are provided on the surface of the transmission ball box.

[0008] This structure enables the device to achieve an integrated and continuous operation process from raw material feeding, liquid spraying and mixing, isolation control to drying and discharging, enhances the overall operation automation degree and processing efficiency, and is suitable for large-scale continuous granulation and drying production.

[0009] In a preferred example of the present invention, it can be further configured as follows: The granulation bed is in the shape of a cylindrical roller and rolls along the horizontal axis under the drive of the speed reduction unit, and tangentially arranged material openings are provided on the surfaces of the granulation chamber and the drying chamber. The cylindrical rolling structure combined with the spiral belt stirring can make the material form multi-directional tumbling and uniform propulsion in the chamber body, enhance the material fluidity and uniform mixing property, and improve the granulation uniformity.

[0010] In a preferred example of the present invention, it can be further configured as follows: The first conveying spiral belt and the second conveying spiral belt are in the shape of spiral strips, and shaft rods respectively connected to the ends of the second output shaft and the first output shaft are provided at the axles of the two, and the shaft rod of the first conveying spiral belt penetrates through the fixed ring and extends into the drying chamber. The coaxial structure is adopted to realize the independent drive and continuous conveying of the spiral belts in the two chamber sections, effectively control the particle propulsion speed, and ensure that the material maintains the best residence time respectively in the granulation and drying links.

[0011] In a preferred embodiment, the present invention can be further configured as follows: the spray bar group is spiral-shaped with a spiral direction opposite to that of the first conveying spiral belt, having the same pitch and diameter. A number of spray holes are provided inside the spray bar group, and both ends are connected to the fixed guide ring through adapter rings. The fixed guide ring is used to externally connect the liquid inlet pipeline. The spraying structure is opposite to the material movement direction, which can enhance the uniformity of liquid coverage on the material surface, achieve continuous atomized spraying, and effectively improve the granulation forming rate and particle density.

[0012] In a preferred embodiment, the present invention can be further configured as follows: a number of paddle valves are uniformly arranged in a fan-shaped structure on the outer periphery of the fixed ring to form a disc shape. The connection point of the crank rod and the linkage pin is eccentrically arranged relative to the center of the paddle valve, and the crank rod is slidably sleeved on the surface of the linkage pin. The eccentric structure ensures that the paddle valves are opened and closed one by one during rotation, realizing "dynamic control of connection" without stopping the rolling state, and significantly optimizing the material conversion control between granulation and drying.

[0013] In a preferred embodiment, the present invention can be further configured as follows: a transmission core shaft is provided inside the transmission ball box. The first drive motor and the second output shaft end are respectively meshed with the transmission core shaft. A transmission gear ring is also provided inside the transmission ball box, and the second drive motor and the first output shaft end are respectively meshed with the transmission gear ring. This coaxial transmission structure reduces space occupation, realizes concentric installation of multiple transmission parts, is beneficial to compact integration and stable operation, and improves the structural strength and assembly reliability of the equipment.

[0014] In a preferred embodiment, the present invention can be further configured as follows: a number of observation windows and maintenance openings are provided on the surface of the granulation bed for material observation and device maintenance. It is convenient for real-time visual monitoring of the material state during the production process, and at the same time improves the maintainability and operation safety of the equipment, reducing the downtime for maintenance.

[0015] The beneficial effects achieved by the present invention are as follows: 1. In the present invention, through the coordinated cooperation of the rolling granulation bed and the coaxial double spiral belt conveying structure, each step of granulation, liquid spraying, drying, and discharging can be continuously completed without interruption, significantly improving production efficiency and reducing manual intervention.

[0016] 2. In the present invention, the first conveying spiral belt with a spiral structure and the spray bar group adopt a reverse rotation design, forming a combined effect of material tumbling and liquid atomization, ensuring sufficient mixing of the binder and the material, thereby obtaining particles with consistent particle size and good forming, meeting the high-standard finished product quality requirements.

[0017] 3. In the present invention, the coaxial drive design, modular spraying structure, and visual observation port design are adopted, which not only improve the operation stability of the device, but also facilitate maintenance, reduce downtime, and meet the long-term operation requirements of various industrial scenarios. Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the granulation bed of an embodiment of the present invention; Figure 3 For an embodiment of the present invention Figure 2 Enlarged structure diagram at position A; Figure 4 Schematic diagram of the installation structure of the spray bar group and the first conveying spiral belt of an embodiment of the present invention; Figure 5 Schematic diagram of the spray bar group structure of an embodiment of the present invention; Figure 6 Schematic diagram of the isolation component structure of an embodiment of the present invention; Figure 7 Schematic diagram of the coaxial drive component structure of an embodiment of the present invention.

[0019] Reference numerals: 100, roller bed frame; 110, bearing frame; 120, speed reduction unit; 200, granulation bed; 210, spray bar group; 220, first conveying spiral belt; 230, second conveying spiral belt; 240, heating plate; 250, exhaust hole; 201, granulation chamber; 202, drying chamber; 203, feed ring; 204, discharge ring; 211, adapter ring; 212, fixed guide ring; 300, isolation component; 310, fixed ring; 320, paddle valve; 330, synchronous ring; 321, crank rod; 331, linkage pin; 400, coaxial drive component; 410, transmission ball box; 420, first output shaft; 430, second output shaft; 411, first drive motor; 412, second drive motor; 413, transmission core shaft; 414, transmission gear ring. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0022] Next, in combination with the attached Figures 1-7 Describe a continuous liquid spraying and flow granulation drying device provided by some embodiments of the present invention.

[0023] Embodiment 1: Standard structure type continuous liquid spraying granulation drying device AsFigures 1 to 7 As shown in Figures 1 to 7 , a continuous liquid spraying and flow granulation drying device includes: a roller bed frame 100, a granulation bed 200, an isolation component 300, and a coaxial drive component 400, wherein the coaxial drive component 400 is fixedly installed at one end of the granulation bed 200.

[0024] The roller bed frame 100 is used to support the overall device, and a bearing frame 110 is installed on the surface to support the rotational movement of the granulation bed 200; a speed reduction unit 120 is also provided on the roller bed frame 100, and its output shaft is connected to the granulation bed 200 to achieve the rolling drive in the horizontal axial direction.

[0025] The granulation bed 200 is in a cylindrical roller structure, and the overall design is in two sections, which are respectively connected to both sides of the isolation component 300, and a granulation chamber 201 and a drying chamber 202 are sequentially formed inside. The granulation chamber 201 is close to the feeding end, and a feeding ring 203 is provided at one end for adding materials; the drying chamber 202 is provided with a discharging ring 204 for discharging particles.

[0026] A first conveying spiral belt 220 and a second conveying spiral belt 230 are coaxially arranged inside the granulation bed 200, and are respectively located in the granulation chamber 201 and the drying chamber 202 for the directional conveying and stirring of materials. The first conveying spiral belt 220 is combined and installed with a spray bar group 210. The spray bar group 210 is in a spiral strip structure, and its spiral direction is opposite to that of the first conveying spiral belt 220, and the pitch and diameter are the same. A plurality of spray holes are provided on the surface of the spray bar group 210, and the inner cavity is connected to a fixed guide ring 212 through a transfer ring 211 at both ends. The fixed guide ring 212 is a stationary structure, and an external liquid inlet pipeline is connected to its surface to realize the dynamic injection of the liquid binder.

[0027] The isolation component 300 is arranged between the granulation chamber 201 and the drying chamber 202, and a fixed ring 310 is provided inside for installing a number of paddle valves 320. Each paddle valve 320 is distributed in a fan shape on the outer periphery of the fixed ring 310 and is connected to an external linkage pin 331 through a crank rod 321. The linkage pin 331 is slidably installed on the surface of the synchronous ring 330. By manually rotating the synchronous ring 330, all the paddle valves 320 can be driven to open or close synchronously to realize the connection or partition of the cabin sections.

[0028] A heating plate 240 is embedded and installed on the inner wall of the drying chamber 202 for drying the materials. A plurality of exhaust holes 250 are provided on the surface of the heating plate 240, and a breathable diaphragm is installed in each exhaust hole 250, which only allows water vapor and air flow to be discharged to prevent material leakage.

[0029] The coaxial drive assembly 400 includes a transmission ball box 410, a first drive motor 411, a second drive motor 412, a second output shaft 430, and a first output shaft 420. Among them, the first output shaft 420 is sleeved outside the second output shaft 430. Inside the transmission ball box 410, there are a transmission core shaft 413 and a transmission gear ring 414. The output of the first drive motor 411 meshes with the transmission core shaft 413 to drive the rotation of the second output shaft 430; the output of the second drive motor 412 meshes with the transmission gear ring 414 to drive the rotation of the first output shaft 420, thereby driving the first conveying spiral belt 220 and the second conveying spiral belt 230 to rotate synchronously or independently.

[0030] In addition, a number of observation windows and maintenance ports are provided on the outer surface of the granulation bed 200, which is convenient for operators to observe the internal state and perform maintenance during operation.

[0031] The working process is as follows: Raw materials enter the granulation chamber 201 through the feed ring 203; the speed reduction unit 120 drives the granulation bed 200 to roll. At the same time, the first drive motor 411 drives the first conveying spiral belt 220 and the spray bar group 210 to rotate, realizing material stirring and spray granulation; the spray liquid flows into the spray bar group 210 through the liquid inlet pipeline via the fixed guide ring 212 and is evenly sprayed from the spray holes, fully mixing with the materials to form particles. Manually rotate the synchronization ring 330 to open the paddle valve 320, and the particles enter the drying chamber 202 with the rolling motion; the heating plate 240 heats the materials, and the water vapor is discharged through the exhaust holes 250; the second drive motor 412 drives the second conveying spiral belt 230 to rotate, pushing the dried particles to the discharge ring 204 for discharge.

[0032] Embodiment Two: Enhanced Structure and Modular Spray Application Based on the structure of Embodiment One, Embodiment Two has carried out structural enhancement and modular design for different application environments.

[0033] The spray bar group 210 is changed to a modular structure. Multiple sections are connected to the surface of the first conveying spiral belt 220 through quick-release buckles. Sprinkler modules with different lengths, hole diameters, and angles can be selected for different processes to meet the diverse product requirements.

[0034] The positions of the exhaust holes 250 are spirally evenly distributed to improve the air flow discharge efficiency in the chamber. The breathable diaphragm at the exhaust holes 250 is an independent modular plug-in structure, which is convenient for cleaning and replacement.

[0035] A shock-absorbing pad and a height adjustment component are added to the bottom of the rolling bed frame 100, which can fine-tune the level of the device according to the ground conditions and absorb the running vibration, improving the running stability.

[0036] This embodiment is applicable to application scenarios with high requirements for equipment cleanliness and replaceability, such as medicine and food.

[0037] Working principle and usage process of the present invention: A continuous liquid spraying and flow granulation drying device provided by the present invention has the ability to work in coordination with multiple functions such as rolling, spraying, conveying, and drying, realizing continuous and homogenized granulation and drying treatment of raw materials. The overall process is automatically controllable and the operation is convenient.

[0038] The raw materials are added into the interior of the granulation bed 200 through the feed ring 203 provided at one end of the granulation chamber 201. Driven by the speed reduction unit 120, the rolling bed frame 100 drives the granulation bed 200 to rotate horizontally around its axis, causing the materials to form multi-dimensional tumbling within the granulation chamber 201, which is conducive to the preliminary uniform spreading of the materials.

[0039] The liquid spraying system is externally connected to a liquid inlet pipeline and connected to the stationary fixed guide ring 212. The liquid binder is continuously input into the transfer ring 211 and the spray bar 210 through the fixed guide ring 212, and continuous liquid spraying is carried out through the spray holes evenly distributed on the surface of the spray bar. Driven by the rolling of the granulation bed, the spraying system realizes dynamic coverage of the materials, enabling the binder and the materials to be fully mixed and undergo coalescence reaction during the rolling and flipping process, gradually forming regular particles.

[0040] Meanwhile, to improve the granulation efficiency, the first drive motor 411 in the coaxial drive assembly drives the second output shaft 430 and the first conveying spiral belt 220 and the spray bar 210 connected thereto to rotate, forming a further stirring and propulsion effect on the materials in the granulation chamber, enhancing the granulation consistency.

[0041] After granulation is completed, the operator manually deflects the external synchronization ring 330, drives the linkage pin 331 to slide and pushes the crank lever 321 to deflect, thereby rotating and opening the paddle valve 320 to realize the connection between the granulation chamber 201 and the drying chamber 202. Under the combined action of the continuous rolling of the granulation bed and the rotation of the first conveying spiral belt 220, the granular materials gradually enter the interior of the drying chamber 202.

[0042] The heating plate 240 provided in the drying chamber is of an embedded structure, and its working surface is evenly distributed with a plurality of exhaust holes 250. The particles evaporate moisture under the heating of the heating plate, and the generated water vapor is discharged in a timely manner through the exhaust holes 250 of the breathable diaphragm structure, effectively preventing moisture accumulation and uneven drying in the chamber.

[0043] After drying is completed, by controlling the reverse rotation of the granulation bed 200, and driving the first output shaft 420 and the second conveying spiral ribbon 230 to rotate by the second driving motor 412, the dried particles are steadily pushed to one end of the discharge ring 204, and continuous discharging is achieved under the rolling action. This structural design ensures uniform particle discharging and controllable speed. In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A continuous liquid spraying and flow granulation drying device, characterized in that, Comprising: A roller bed frame (100), a granulation bed (200), an isolation component (300), and a coaxial drive component (400) fixed to one end of the granulation bed (200). A bearing frame (110) for supporting the rotational movement of the granulation bed (200) is provided on the surface of the roller bed frame (100), and a speed reducer unit (120) for driving the rotational movement of the granulation bed (200) is provided on the surface of the roller bed frame (100); The granulation bed (200) is of a two-section type and is respectively connected to both sides of the isolation component (300). A granulation chamber (201) and a drying chamber (202) are respectively provided inside the two-section granulation bed (200). A feed ring (203) is provided at one end of the granulation chamber (201), and a discharge ring (204) is provided at one end of the drying chamber (202). A first conveying screw belt (220) and a second conveying screw belt (230) arranged coaxially are rotatably installed inside the granulation bed (200), and the first conveying screw belt (220) and the second conveying screw belt (230) are respectively located inside the granulation chamber (201) and the drying chamber (202). A spray bar group (210) with a reverse rotation direction to the spray bar group (210) is arranged on the surface of the first conveying screw belt (220). Both ends of the spray bar group (210) are fixedly connected with a transfer ring (211). A fixed guide ring (212) is rotatably sleeved on the surface of the transfer ring (211), and a liquid inlet pipeline is connected to the surface of the fixed guide ring (212); A fixed ring (310) is fixedly installed inside the isolation component (300), and a plurality of paddle valves (320) are provided on the outer periphery of the fixed ring (310). The paddle valve (320) is provided with a crank rod (321) penetrating to the outside of the isolation component (300). A synchronous ring (330) is rotatably sleeved on the outer periphery of the isolation component (300), and a linkage pin (331) slidably sleeved on the surface of the crank rod (321) is provided on the surface of the synchronous ring (330); The coaxial drive component (400) includes a transmission ball box (410), a first output shaft (420), and a second output shaft (430) respectively connected to the first conveying screw belt (220) and the second conveying screw belt (230). The first output shaft (420) is rotatably sleeved on the outside of the second output shaft (430). A second drive motor (412) and a first drive motor (411) for respectively driving the rotation of the first output shaft (420) and the second output shaft (430) are provided on the surface of the transmission ball box (410).

2. The continuous liquid spraying and flow granulation drying device according to claim 1, wherein, The granulation bed (200) is in a cylindrical roller shape and performs a horizontal axial rolling movement under the drive of the speed reducer unit (120). Tangentially arranged material ports are provided on the surfaces of the granulation chamber (201) and the drying chamber (202).

3. A continuous liquid spraying and fluidized granulation drying device according to claim 1, characterized in that, The first conveying spiral belt (220) and the second conveying spiral belt (230) are in a spiral strip shape, and shaft rods respectively connected to the ends of the second output shaft (430) and the first output shaft (420) are provided at the axes of the first conveying spiral belt (220) and the second conveying spiral belt (230). The shaft rod of the first conveying spiral belt (220) penetrates through the fixed ring (310) and extends to the inside of the drying chamber (202).

4. A continuous liquid spraying and flow granulation drying device according to claim 1, characterized in that, The spray bar group (210) is in a spiral strip shape and has a spiral direction opposite to that of the first conveying spiral belt (220), with the same pitch and diameter. A number of spray holes are formed inside the spray bar group (210). Both ends of the spray bar group (210) communicate with the inner cavity of the adapter ring (211). The fixed guide ring (212) is sleeved on the surface of the adapter ring (211) for dynamically connecting with an external liquid inlet pipeline and the adapter ring (211).

5. A continuous liquid spraying and flow granulation drying device according to claim 1, characterized in that, The inner wall of the drying chamber (202) is embedded with a heating plate (240) for heating and drying the material. A number of exhaust holes (250) are formed on the surface of the heating plate (240). One end of each exhaust hole (250) penetrates through the surface of the granulation bed (200). A breathable diaphragm is provided inside the exhaust hole (250) for only guiding out water vapor and air flow.

6. A continuous liquid spraying and flow granulation drying device according to claim 1, characterized in that, A number of the paddle valves (320) are all in a fan shape and are located on the outer periphery of the fixed ring (310) to form a disc shape. The connection point of the crank rod (321) and the linkage pin (331) deviates from the axis of rotation of the paddle valve (320). The crank rod (321) is slidably sleeved on the surface of the linkage pin (331).

7. A continuous liquid spraying and flowing granulation drying device according to claim 1, characterized in that, A transmission core shaft (413) is rotatably installed inside the transmission ball box (410). The end of the first driving motor (411) and the end of the second output shaft (430) are both in meshing transmission with the surface of the transmission core shaft (413). A transmission gear ring (414) is rotatably installed inside the transmission ball box (410). The end of the second driving motor (412) and the end of the first output shaft (420) are both in meshing transmission with the surface of the transmission gear ring (414).

8. A continuous liquid spraying and flow granulation drying device according to claim 1, characterized in that, A number of observation windows and maintenance openings are provided on the surface of the granulation bed (200), facilitating the observation of the material state and the performance of maintenance operations during operation.

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