A closed slurry granulator and a method of operation thereof

Abstract

The application discloses a closed dilute slurry granulator and a working method thereof, which comprises a feeding system (1), a granulating system (2), a desolventizing and transmission conveying system (3) and a vibrating particle breaking system (4). The feeding system (1) is located above the granulating system (2) and can extrude energetic dilute slurry materials into the granulating system (2) below. The granulating system (2) comprises a closed tank body (21) and a granulating mechanism (22). The granulating mechanism (22) is arranged in the closed tank body (21) and can extrude the energetic dilute slurry materials to form energetic material strips. The desolventizing and transmission conveying system (3) can blow and convey the energetic material strips to the vibrating particle breaking system (4). The vibrating particle breaking system (4) can vibrate and break the energetic material strips to obtain energetic particles and then complete discharging. The application can realize an efficient, environment-friendly and high-quality dilute slurry granulating process, improve product quality and production efficiency, and simultaneously improve a working environment.

Description

Technical Field

[0001] This invention belongs to the field of granulation equipment technology, and in particular relates to a closed slurry granulator and its working method. Background Technology

[0002] Existing granulation technologies present numerous challenges in processing slurry materials. Traditional granulators are largely unable to achieve efficient and high-quality granulation of slurry materials.

[0003] On the one hand, many granulators lack proper sealing. During the granulation process, the slurry and organic solvents in the material can easily leak into the surrounding environment, not only wasting materials and increasing production costs, but also causing serious pollution to the working environment and endangering the health of operators. Moreover, external dust and impurities can easily enter the granulator and mix with the material, affecting the quality of the final product.

[0004] On the other hand, existing granulators do not have precise control over the flowability of slurry materials. Slurry materials have high flowability, and if this is not properly controlled, it will lead to uneven granulation, resulting in particles of different sizes and irregular shapes, which reduces the product's qualification rate and affects its market competitiveness.

[0005] Traditional extrusion granulation is not suitable for the safety and quality requirements of granulation of energetic materials. The mechanical density of the granules produced by traditional granulation methods is inconsistent, and the energy density is also inconsistent under a certain volume, which makes it impossible to use these unqualified granular materials in subsequent production.

[0006] In addition, some granulators lack effective heating and drying measures during the granulation process, making it difficult for slurry materials to solidify and form quickly, resulting in low granulation efficiency and failing to meet the needs of large-scale production. Summary of the Invention

[0007] The purpose of this invention is to provide a closed slurry granulator and its working method to solve the above-mentioned problems existing in the processing of slurry materials by existing granulators, realize an efficient, environmentally friendly and high-quality slurry granulation process, improve product quality and production efficiency, and improve the working environment.

[0008] The technical solution adopted in this invention is:

[0009] A closed slurry granulator includes a feeding system, a granulation system, a solvent dispersing and transmission system, and a vibration granulation system;

[0010] The feeding system is located above the granulation system and can extrude energetic slurry material into the granulation system below. The granulation system includes a sealed tank and a granulation mechanism. The granulation mechanism is located in the sealed tank and can extrude energetic slurry material to form energetic material strips. The dissolving and transmission system can purge the energetic material strips and transport them to the vibration breaking system. The vibration breaking system can break the energetic material strips to obtain energetic particles and complete the discharge.

[0011] Furthermore, the feeding system includes a pressure plate, a servo press, a servo press bracket, and a material bucket placement bracket. The material bucket placement bracket is used to place the energetic slurry material bucket, and the servo press bracket is used to install the servo press. The servo press can drive the pressure plate to extrude the energetic slurry material in the material bucket into the granulation mechanism below.

[0012] Furthermore, the granulation mechanism includes a rotating blade, a first drive motor, a granulation tube sheet, and a granulation cylinder. The granulation tube sheet is horizontally installed at the bottom of the granulation cylinder, and multiple granulation holes are distributed on the surface of the granulation tube sheet. The first drive motor is installed at the top of the granulation cylinder. The upper end of the rotating blade is connected to the first drive motor, and the lower end extends into the granulation cylinder. The first drive motor is used to drive the rotating blade to rotate, thereby realizing the rotational extrusion of the energetic slurry material during the granulation process, so that the energetic slurry material is extruded through the granulation tube sheet.

[0013] Furthermore, the extrusion contact surface between the rotating blade and the energetic slurry material forms a pre-compression section, a crushing section, and an extrusion section from top to bottom, and the slope of the extrusion contact surface of the pre-compression section, the crushing section, and the extrusion section decreases sequentially.

[0014] Furthermore, a torque sensor is provided at the output end of the first drive motor.

[0015] Furthermore, inspection doors are provided on both sides of the sealed tank. The inspection doors are sealed to the sealed tank using sealing strips and a quick-release locking structure. Observation windows are provided on both sides of the sealed tank.

[0016] Furthermore, the granulation system includes a conveyor belt, a hot air duct, and an exhaust duct. The conveyor belt is installed inside the sealed tank and includes a frame, a second drive motor, and a belt. The belt is mounted on the frame, and the second drive motor is used to drive the belt to rotate in a cycle. The hot air duct is located on both sides of the conveyor belt and has multiple air outlets. The exhaust duct connects the inside of the sealed tank to the outside.

[0017] Furthermore, the vibration particle breaking system is installed inside a sealed tank and includes a pneumatic motor bracket, a circular vibrating screen, a pneumatic motor, and a scraper. The pneumatic motor is fixed by the pneumatic motor bracket and can drive the scraper to rotate. The scraper is located inside the circular vibrating screen. Energetic material strips are conveyed to the circular vibrating screen via a conveyor belt. The circular vibrating screen starts to vibrate at a certain frequency, breaking the energetic material strips to obtain energetic particles. At the same time, the scraper is driven to rotate by the pneumatic motor, which evenly distributes the prepared energetic particles, and the particles are discharged from the discharge port of the circular vibrating screen.

[0018] A method for operating a closed slurry granulator involves first placing an energetic slurry material bucket on a bucket placement support, then starting a servo press to drive a pressure plate to extrude the material from the energetic slurry material bucket into a granulation cylinder. A first drive motor drives a rotating paddle to rotate, achieving pre-compression of the energetic slurry material in the pre-compression section, further compression and crushing in the crushing section, and extrusion in the extrusion section. The energetic material material is then extruded through the granulation holes of the granulation plate to form energetic material strips. These strips fall onto a conveyor belt and are simultaneously blown by hot air through a hot air pipe to quickly dry their surface, prevent sticking, and remove organic solvents from the material. Finally, the energetic material strips are conveyed by the conveyor belt to a vibrating pelletizing system. After being vibrated at high frequency by a circular vibrating screen, the energetic material strips are formed into energetic particles of the desired size, which are then discharged from the discharge port of the circular vibrating screen.

[0019] Furthermore, during the rotary compression process of the rotary blades, the pressure applied by the rotary blades to the energetic slurry material is controlled by a torque sensor.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. Excellent environmental performance and safety: The sealed structure can completely prevent dust from escaping and the volatilization of organic solvents in the materials, meeting environmental protection requirements, improving the working environment, and effectively preventing external dust or impurities from entering the materials, affecting product quality and causing safety hazards.

[0022] 2. High production efficiency: The hot air duct purging of the material can accelerate the solidification and drying process of the slurry, shorten the granulation cycle, and improve production efficiency. At the same time, the conveyor belt enables continuous material transportation, which facilitates subsequent vibration granulation and further improves production efficiency.

[0023] 3. High Product Quality: By adjusting the blade rotation speed to control the material extrusion speed and matching a suitable extrusion plate, energetic material strips of appropriate size and uniform composition can be produced. The extrusion contact surface between the rotating blade and the energetic slurry material forms a pre-compression section, a crushing section, and an extrusion section from top to bottom. The slope of the extrusion contact surface in the pre-compression section, crushing section, and extrusion section decreases sequentially, enabling segmented compression. The energetic slurry material is pre-compressed in the pre-compression section, further compressed and crushed in the crushing section, and extruded in the extrusion section. This achieves better uniform compression of the slurry material. After being broken by a circular vibrating screen, uniformly sized and regularly shaped particles can be obtained, improving product quality and pass rate.

[0024] 4. Wide range of applications: It can handle materials of different viscosities and adapt to various production needs by adjusting process parameters.

[0025] 5. Easy to operate: Each system of the present invention adopts a modular design, with a simple structure, easy to install, maintain and operate. Operators can easily adjust parameters such as feed flow rate, blade speed and hot air volume through the control panel to achieve precise control of the granulation process.

[0026] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the closed slurry granulator of the present invention;

[0028] Figure 2 This is a front view of the closed slurry granulator of the present invention;

[0029] Figure 3 This is a diagram showing the internal structure of the closed slurry granulator of the present invention.

[0030] Figure 4 This is a diagram showing the internal structure of the closed slurry granulator of the present invention.

[0031] Figure 5 This is a diagram showing the internal structure of the closed slurry granulator of the present invention.

[0032] Figure 6 This is a structural diagram of a granulation perforated plate.

[0033] Figure 7 This is a diagram showing the internal structure of the closed slurry granulator of the present invention.

[0034] Figure 8 This is a structural diagram of the transmission belt;

[0035] Figure 9 This is a diagram of the hot air duct structure.

[0036] Figure 10 This is a structural diagram of a vibration-induced particle breaking system;

[0037] Figure 11 A schematic diagram of segmented compression of the rotating blade compression surface;

[0038] Figure 12 A graph showing the relationship between pressure applied to the rotating blades and granulation speed;

[0039] Figure 13 This is a diagram showing the correction of granulation parameters. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0041] Combination Figure 1-3 A closed slurry granulator includes a feeding system 1, a granulation system 2, a dissolving and transmission system 3, and a vibration breaking system 4.

[0042] The feeding system 1 is located above the granulation system 2 and can extrude energetic slurry material into the granulation system 2 below. The granulation system 2 includes a sealed tank 21 and a granulation mechanism 22. The granulation mechanism 22 is disposed in the sealed tank 21 and can extrude energetic slurry material to form energetic material strips. The dissolving and transmission system 3 can purge the energetic material strips and transport them to the vibration breaking system 4. The vibration breaking system 4 can break the energetic material strips to obtain energetic particles and complete the discharge.

[0043] Specifically, in combination Figure 4-5 The feeding system 1 includes a pressure plate 11, a servo press 12, a servo press bracket 13, and a material bucket placement bracket 14. The material bucket placement bracket 14 is used to place the energetic slurry material bucket, and the servo press bracket 13 is used to install the servo press 12. The servo press 12 can drive the pressure plate 11 to extrude the energetic slurry material in the material bucket into the granulation mechanism 22 below.

[0044] Specifically, the granulation mechanism 22 includes a rotating blade 221, a first drive motor 222, a granulation tube sheet 223, and a granulation cylinder 224. The granulation tube sheet 223 is horizontally installed at the bottom of the granulation cylinder 224. Figure 6The granulation plate 223 has a plurality of granulation holes 2231 evenly distributed on its surface. The diameter and shape of the granulation holes 2231 can be designed according to the required particle size and shape. The first drive motor 222 is installed on the top of the granulation cylinder 224. The upper end of the rotating blade 221 is connected to the first drive motor 222, and the lower end extends into the granulation cylinder 224. The first drive motor 222 is used to drive the rotating blade 221 to rotate, thereby realizing the rotational extrusion of the energetic slurry material during the granulation process, so that the energetic slurry material is evenly distributed and extruded through the granulation plate 223.

[0045] Specifically, in combination Figure 11 The rotating blades 221 form a pre-compression section, a crushing section, and an extrusion section from top to bottom on the extrusion contact surface with the energetic slurry material. The slope of the extrusion contact surface decreases sequentially in the pre-compression, crushing, and extrusion sections. In the pre-compression section (with a larger slope and faster convergence of the compression chamber), the slurry material undergoes preliminary compaction, degassing, and material layer regularization to eliminate internal voids and prevent air resistance during subsequent compression. In the crushing section (with a moderate slope and slower convergence), the pre-compressed material undergoes further compaction and shearing crushing to break up agglomerated particles and ensure uniform material density without hard lumps. In the extrusion section (with the smallest slope, almost gentle), the compression chamber converges very little, and the pressure is stable, allowing the material to be fully uniformly compressed and densified before smooth extrusion, avoiding uneven density, pulsating discharge, or localized overpressure caused by sudden pressure increases.

[0046] The material is compressed in three stages by the paddles, which can achieve a smooth transition from low to high pressure and from wide to narrow space, improving the compression uniformity, compaction stability and extrusion continuity of energetic slurry materials. If the paddles are not segmented, the material will suddenly change from loose to dense during extrusion, causing the material to not have enough time to flow and expel air, resulting in internal air trapping, clumping and huge density differences.

[0047] Specifically, a torque sensor is provided at the output end of the first drive motor 222.

[0048] Specifically, the sealed tank 21 ensures that the granulation process is carried out in a closed environment. It adopts a sealed structure, and the sealed tank 21 is provided with inspection doors on both sides. The inspection doors are sealed with sealing strips and quick-release locking structure to prevent organic solvent leakage. Observation windows are provided on both sides of the sealed tank 21 to facilitate observation of the environment inside the tank.

[0049] Specifically, in combination Figure 7-9The granulation system includes a conveyor belt 31, a hot air duct 32, and an exhaust duct 33. The hot air duct 32 is mainly welded from 316 stainless steel pipe. The conveyor belt 31 is located inside the sealed tank 21 and includes a frame 311, a second drive motor 312, and a belt 313. The belt 313 is mounted on the frame 311, and the second drive motor 312 drives the belt 313 to circulate. The hot air duct 32 is located on both sides of the conveyor belt 31 and has multiple air outlets 321. The air outlets 321 are duckbill-shaped to increase the gas flow rate and improve the dissolution effect of the material. The exhaust duct 33 connects the inside and outside of the sealed tank 21. Waste gas containing dust and volatile organic solvents generated during the granulation process enters the exhaust pipe through the exhaust duct 33. The exhaust pipe is checked regularly to ensure that the waste gas can smoothly enter the waste gas treatment unit. Regularly test the purified gas to check whether the dust concentration and volatile organic compound content meet the emission standards. If emissions are found to be substandard, replace the filter material in the filter layer and the adsorbent in the adsorption layer in a timely manner to ensure the effectiveness of waste gas treatment.

[0050] Specifically, in combination Figure 10 The vibrating particle breaking system 4 is installed inside the sealed tank 21 and includes a pneumatic motor bracket 411, a circular vibrating screen 412, a pneumatic motor 413, and a scraper 414. The pneumatic motor 413 is fixed by the pneumatic motor bracket 411 and can drive the scraper 414 to rotate. The scraper 414 is located inside the circular vibrating screen 412. Energetic material strips are conveyed to the circular vibrating screen 412 by the conveyor belt 31. The circular vibrating screen 412 starts to vibrate at a certain frequency. Combined with the vibrating ball, the energetic material strips are broken to obtain energetic particles of appropriate size. At the same time, the scraper 414 is driven to rotate by the pneumatic motor 413 to evenly distribute the prepared energetic particles, which are then discharged from the discharge port 415 of the circular vibrating screen.

[0051] Hot air rapid drying and rapid VOC dilution:

[0052] The granulated material needs to have its solvent rapidly removed to achieve a dry state. Therefore, three sets of air drying systems are installed at the end of the granulation process to quickly evaporate the solvent within the granules. Since the raw material solvent is also a flammable and explosive product, the concentration of the solvent in the air must be strictly controlled during the evaporation process. In this invention, air knives are used for drying while a large amount of air is supplied to quickly and effectively dilute the evaporating solvent, reducing on-site hazards. A thermal radiation heating device is installed at the bottom, and a hot water system is used for heat dissipation, achieving the goal of rapid solvent removal while ensuring safety.

[0053] Conveyor Line: The conveyor line is used to transport the material produced by the granulator in real time. It uses steel belts or corrosion-resistant and anti-static belts, with a scraper at the outlet and idlers underneath. The frame is constructed of stainless steel and equipped with casters for easy movement. The perimeter is enclosed with stainless steel sheet metal panels with rotating hinges, and a mounting plate is provided at the bottom. The line is driven by synchronous belts, effectively reducing equipment noise. Combined with explosion-proof servo motors and planetary reducers, the conveyor line can be flexibly controlled to match the granulation and drying speeds. A hot water heating system is installed on the conveyor line to heat the belt through thermal radiation, achieving rapid solvent removal.

[0054] A method for operating a closed slurry granulator involves first placing an energetic slurry material container on a container placement bracket 14. Then, a servo press 12 is started, driving a pressure plate 11 to extrude the material from the energetic slurry material container into a granulation cylinder 224. During this process, the servo press 12 slowly descends, gradually adjusting the appropriate extrusion speed and controlling the flow rate. The first drive motor 222 drives a rotating blade 221 to rotate. Pre-compression of the energetic slurry material is achieved in the pre-compression section, further compression and crushing in the crushing section, and final extrusion in the granulation section. The energetic slurry material is extruded and formed into cylindrical energetic material strips through the granulation holes 2231 of the granulation plate 223. The energetic material strips fall onto the conveyor belt 31 and are simultaneously conveyed by hot air pipes 32 to quickly dry their surface, prevent sticking, and remove organic solvents from the material. Finally, the energetic material strips are conveyed by the conveyor belt 31 to the vibrating particle breaking system 4. After being vibrated at high frequency by the circular vibrating screen 412, the energetic material strips are formed into energetic particles of the required size and discharged from the discharge port 415 of the circular vibrating screen.

[0055] Process parameters can be adjusted during operation:

[0056] 1. Adjustments for different materials

[0057] For high-viscosity slurry materials, appropriately increasing the rotational speed of the rotating blades 221 increases the rotational extrusion pressure, making it easier for the material to pass through the granulation plate orifices 2231. Simultaneously, reducing the feed flow rate prevents material from clogging the granulation orifices. For low-viscosity slurry materials, reducing the rotational speed of the rotating blades 221 and increasing the feed flow rate ensures granulation efficiency. Based on the thermal stability of the material, the temperature of the hot air duct 32 is adjusted. For heat-sensitive materials, the heating temperature is reduced, shortening the residence time of the material in the granulation chamber.

[0058] 2. Particle size control

[0059] By changing the granulation tube sheet 223 with different aperture diameters, granules of different sizes can be produced. For example, to produce granules with a diameter of 2mm, a granulation tube sheet with a granulation aperture diameter of 2mm can be selected. Adjusting the rotational speed of the rotating blade 221 also affects the particle size; the higher the rotational speed, the greater the rotational extrusion pressure, and the finer the extruded particles; the lower the rotational speed, the coarser the particles.

[0060] 3. Production efficiency optimization

[0061] While ensuring product quality, appropriately increasing the feed flow rate and the rotation speed of the rotating blade 221 can improve production efficiency. Optimizing the temperature control of the hot air duct 32 ensures that the material can solidify quickly in the sealed tank 21, shortening the granulation cycle.

[0062] The segmented compression of the rotary paddle 221 is the prerequisite and core of the entire system's operation. Only by ensuring the material is correctly pressed into the screen can qualified products be produced. Because the material is a solid-liquid mixture, and a non-Newtonian fluid material dominated by the solid phase, it possesses flammable and explosive properties. Therefore, its inherent characteristics determine that this material cannot be granulated through methods such as frontal extrusion or spiral extrusion. Considering the potential hazards during the granulation process, this invention adopts a three-stage process, using a "pre-compression – crushing – extrusion" process to ensure production stability and improve safety. Since organic solvents such as ethyl acetate and n-hexane are present during granulation, the blades of the rotary paddle 221 are made of polytetrafluoroethylene (PTFE), which is insensitive to these solvents, or are made of 316L stainless steel coated with PTFE to prevent blade corrosion during granulation.

[0063] Specifically, during the rotational compression process of the rotating blade 221, the pressure applied to the energetic slurry material by the rotating blade 221 is controlled by a torque sensor. The pressure borne by the blades during granulation is fed back to the drive side in the form of torque. Therefore, the output torque of the tableting drive end is directly proportional to the granulation pressure. Without reaching the driving torque limit, the process pressure increases with the increase of the granulation speed. A safe pressure range is required in the design process. Therefore, this invention indirectly detects the tableting and granulation pressure by detecting the output torque to control the pressure borne by the material during granulation so as not to exceed its limit value, ensuring the safety of the production process. Figure 12 As shown, during normal operation, the pressure applied by the rotating blade 221 is controlled to have a certain upper limit, and the granulation speed is also limited to a certain upper limit to ensure the safety of the production process.

[0064] Granulator production is a continuous process, with its timing based on the sequential connection of various process objects. The operational bottlenecks consist of three parts:

[0065] (1) Granulator screen discharge speed

[0066] The discharge speed of the granulator screen is mainly regulated by the rotation speed of the internal blades. During rotation, the blades compress and shape the material into granules through the curves on their surfaces. The faster the blade rotation speed, the faster the discharge speed.

[0067] (2) Transmission line operating speed

[0068] The granulated material needs to be delivered in a timely manner to avoid material accumulation. Therefore, the operating speed of the conveyor line needs to be matched with the granulation speed.

[0069] (3) Drying speed

[0070] The drying speed mainly depends on the solvent content in the granulated material. If the solvent content is high, it will take longer to dry the material. Therefore, the conveyor line needs to run at a slower speed. Conversely, the granulation speed needs to be slowed down to avoid material accumulation.

[0071] In summary, considering the above three factors, the design process fully takes into account the influence of material characteristics. The granulation speed and conveyor line speed are both designed to be adjustable, and preset and matched according to different product characteristics. Before granulation, simply select the product type to be granulated, and the system automatically calls the preset parameters for operation. During operation, manual intervention is possible to correct the parameters, such as... Figure 13 As shown.

[0072] The granulation method in this invention achieves effective control of material extrusion force and speed by designing a special blade and controlling the blade's rotation speed and torque, thereby obtaining qualified granules. The blade pre-compresses and crushes the material to make the material texture more uniform. With the material texture uniform, qualified granules are finally extruded through the extrusion section of the blade.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A closed slurry granulation machine, characterized in that, Includes a feeding system (1), a granulation system (2), a dissolving and transmission system (3), and a vibration breaking system (4). The feeding system (1) is located above the granulation system (2) and can extrude energetic slurry material into the granulation system (2) below. The granulation system (2) includes a sealed tank (21) and a granulation mechanism (22). The granulation mechanism (22) is located inside the sealed tank (21). The granulation mechanism (22) can extrude energetic slurry material to form energetic material strips. The dissolving and transmission system (3) can purge the energetic material strips and transport them to the vibration breaking system (4). The vibration breaking system (4) can break the energetic material strips to obtain energetic particles and then discharge the material.

2. The closed slurry granulator according to claim 1, characterized in that, The feeding system (1) includes a pressure plate (11), a servo press (12), a servo press bracket (13), and a material bucket placement bracket (14). The material bucket placement bracket (14) is used to place the energetic slurry material bucket, and the servo press bracket (13) is used to install the servo press (12). The servo press (12) can drive the pressure plate (11) to squeeze the energetic slurry material in the material bucket into the granulation mechanism (22) below.

3. The closed slurry granulator according to claim 1 or 2, characterized in that, The granulation mechanism (22) includes a rotating blade (221), a first drive motor (222), a granulation tube sheet (223), and a granulation cylinder (224). The granulation tube sheet (223) is horizontally installed at the bottom of the granulation cylinder (224). The surface of the granulation tube sheet (223) is distributed with multiple granulation holes (2231). The first drive motor (222) is installed at the top of the granulation cylinder (224). The upper end of the rotating blade (221) is connected to the first drive motor (222), and the lower end extends into the granulation cylinder (224). The first drive motor (222) is used to drive the rotating blade (221) to rotate, thereby realizing the rotational extrusion of the energetic slurry material during the granulation process, so that the energetic slurry material is extruded through the granulation tube sheet (223).

4. The closed slurry granulator according to claim 3, characterized in that, The rotating blade (221) and the extrusion contact surface of the energetic slurry material form a pre-compression section, a crushing section and an extrusion section from top to bottom, and the slope of the extrusion contact surface of the pre-compression section, the crushing section and the extrusion section decreases in sequence.

5. The closed slurry granulator according to claim 4, characterized in that, A torque sensor is provided at the output end of the first drive motor (222).

6. The closed slurry granulator according to claim 5, characterized in that, Inspection doors are provided on both sides of the sealed tank (21). The inspection doors are sealed with sealing strips and quick-release locking structure between the inspection doors and the sealed tank (21). Observation windows are provided on both sides of the sealed tank (21).

7. The closed slurry granulator according to claim 5 or 6, characterized in that, The granulation system includes a conveyor belt (31), a hot air duct (32), and an exhaust duct (33). The conveyor belt (31) is located inside the sealed tank (21) and includes a frame (311), a second drive motor (312), and a belt (313). The belt (313) is mounted on the frame (311), and the second drive motor (312) is used to drive the belt (313) to rotate in a cycle. The hot air duct (32) is located on both sides of the conveyor belt (31) and has multiple air outlets (321). The exhaust duct (33) connects the inside and outside of the sealed tank (21).

8. The closed slurry granulator according to claim 7, characterized in that, The vibration breaking system (4) is set inside the sealed tank (21) and includes a pneumatic motor bracket (411), a circular vibrating screen (412), a pneumatic motor (413), and a scraper (414). The pneumatic motor (413) is fixed by the pneumatic motor bracket (411) and can drive the scraper (414) to rotate. The scraper (414) is located inside the circular vibrating screen (412). The energetic material strip is transported to the circular vibrating screen (412) by the transmission belt (31). The circular vibrating screen (412) starts to vibrate at a certain frequency to break the energetic material strip and obtain energetic particles. At the same time, the scraper (414) is driven to rotate by the pneumatic motor (413) to evenly distribute the prepared energetic particles and complete the discharge from the discharge port (415) of the circular vibrating screen.

9. A method for operating a closed slurry granulator according to claim 8, characterized in that, First, place the energetic slurry material bucket on the bucket placement bracket (14), then start the servo press (12) to drive the pressure plate (11) to extrude the material in the energetic slurry material bucket into the granulation cylinder (224). The first drive motor (222) drives the rotating blade (221) to rotate. In the pre-compression section, the energetic slurry material is pre-compressed. In the crushing section, the energetic slurry material is further compressed and crushed. In the extrusion section, the energetic slurry material is extruded and passed through the granulation tube sheet (223). The granulation holes (2231) form energetic material strips, which fall onto the conveyor belt (31). While being conveyed, the energetic material strips are blown by the hot air pipe (32) to dry their surface quickly, prevent sticking, and drive away the organic solvents in the material. Finally, the energetic material strips are conveyed by the conveyor belt (31) to the vibrating particle breaking system (4). After the energetic material strips are vibrated at high frequency by the circular vibrating screen (412), they form energetic particles of the required size and are discharged from the discharge port (415) of the circular vibrating screen.

10. The working method of the closed slurry granulator according to claim 9, characterized in that, During the rotational compression process of the rotating blade (221), the pressure applied by the rotating blade (221) to the energetic slurry material is controlled by a torque sensor.

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