Spray granulation equipment and spray granulation method

Abstract

The invention discloses spray granulation equipment and a spray granulation method, and relates to the technical field of spray granulation. The device comprises a drying box, the drying box internally comprises a hot air cavity and a processing cavity, an air heater is installed in the hot air cavity, a filter plate is installed between the hot air cavity and the processing cavity, and a discharging opening is formed in the processing cavity; and the storage tank is provided with a discharging pipe communicating with the processing cavity, and a stirring piece is installed in the storage tank. When the device is used, air is blown into the processing cavity through the air heater, raw materials are dried through hot air, particles formed by the raw materials can be discharged through a discharging port, and the blown-out hot air moves in the processing cavity, gradually moves into a transfer pipe and enters an interlayer of a storage tank through the transfer pipe; and the storage tank is preheated through waste heat of tail gas, the utilization rate of the tail gas is increased, and then the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spray granulation, in particular to a spray granulation device and a spray granulation method. BACKGROUND

[0002] Spray granulation is a method of obtaining uniform dry particles by rapid evaporation of solvent in slurry with the aid of atomization and drying, which has become a key process in the preparation of high-density and high-strength products in the ceramic field.

[0003] The existing spray granulation device, such as the one disclosed in CN115837247B, is a microcapsule spray granulation device related to the technical field of spray granulation. This kind of microcapsule spray granulation device includes a drying box, a mother liquor tank fixedly connected to the top of the drying box, a valve fixedly connected to the side wall of the mother liquor tank, a connecting pipe fixedly connected to the side wall of the valve, a spray head fixedly connected to the other end of the connecting pipe, a hot air pipe fixedly inserted into the top of the drying box, an air outlet pipe fixedly inserted into the side wall of the drying box, a fixed plate fixedly connected to the inner side wall of the drying box and arranged obliquely downward, which can flatten the microcapsules on the upper side wall of the fixed plate for further drying, avoiding the accumulation of particles, which makes it difficult for the moisture inside the particles to evaporate, and preventing the particles from sticking together to ensure the processing quality. Moreover, the collected microcapsules are completely dried, while the undried microcapsules remain on the upper side wall of the fixed plate for further drying, thereby ensuring the production quality of the microcapsules. However, when the spray granulation device is in use, the hot air in the drying box will become exhaust gas after drying the raw materials, and the remaining heat inside cannot be reused, resulting in waste of energy.

[0004] Therefore, the present application proposes a spray granulation device and a spray granulation method to improve this problem. SUMMARY

[0005] The present application aims to solve the problems in the background art by providing a spray granulation device and a spray granulation method.

[0006] To achieve the above-mentioned purpose, the present application specifically adopts the following technical solutions: A spray granulation device, comprising: a drying box, which includes a hot air chamber and a processing chamber inside, a hot air machine installed in the hot air chamber, a filter plate installed between the hot air chamber and the processing chamber, and a discharge port opened on the processing chamber; a storage tank, which is installed with a discharge pipe communicating with the processing chamber, a stirring member installed in the storage tank, a cladding layer opened on the wall thickness of the storage tank, a transfer pipe installed in the processing chamber for tail gas passing, a free end of the transfer pipe communicating with the cladding layer, and an exhaust pipe installed on the storage tank and communicating with the cladding layer.

[0007] As preferred, the stirring piece comprises stirring blades rotatably installed in the storage tank, the stirring blades are provided with cavities, the cavities are rotatably provided with cover plates, the cover plates are provided with air pipes, the air pipes are penetrated through the cover plates and communicated with the cavities, the stirring blades are provided with a plurality of air outlet holes communicated with the storage tank.

[0008] As preferred, the discharging port is provided with an inclined surface along the edge, the drying box is hingedly provided with a shielding plate in the processing cavity, the shielding plate and the processing cavity are provided with connecting springs, and the processing cavity is provided with an impact plate abutting against the shielding plate.

[0009] As preferred, the drying box is provided with an inclined table in the processing cavity, the shielding plate is hingedly provided on the inclined table, and the inclined surface of the inclined table faces the discharging port.

[0010] As preferred, the drying box is provided with a hose in the processing cavity, one end of the hose is communicated with the transfer pipe, and the other end of the hose is provided with a rubber ball abutting against the shielding plate, the rubber ball is provided with an exhaust member for exhausting the gas in the rubber ball.

[0011] As preferred, the transfer pipe is provided with a tapered cylinder at one end in the processing cavity, the tapered cylinder is provided with a through hole for air flow, and the diameter of the tapered cylinder gradually decreases from the end connected with the transfer pipe to the end away from the transfer pipe.

[0012] As preferred, the exhaust member comprises an air outlet pipe provided on the rubber ball, the air outlet pipe is provided with a return spring, the free end of the return spring is provided with a blocking plate, the air outlet pipe is provided with a shielding block to form a neck in the air outlet pipe, the blocking plate is provided with an inserting block inserted in the neck, and the cross-sectional area of the blocking plate along the radial direction of the air outlet pipe is larger than the cross-sectional area of the inserting block along the radial direction of the air outlet pipe.

[0013] As preferred, the impact plate is provided with a through hole, the drying box is provided with an abutting spring in the processing cavity, the free end of the abutting spring is provided with an inserting rod inserted in the through hole, the inserting rod is provided with a spring telescopic rod, and the end of the spring telescopic rod is hingedly provided with a scraping plate in contact with the surface of the inclined table.

[0014] As preferred, the inclined table is provided with a weight-reducing cavity to reduce the thickness of the inclined table provided with the inclined surface.

[0015] The application also provides a spray granulation method suitable for the spray granulation device, comprising the following steps: S1, placing raw materials in the storage tank and stirring the raw materials by the stirring blades; S2, when the raw materials are stirred, the shielding plate disconnects the communication between the processing cavity and the transfer pipe, and the airflow blown by the hot air machine dries the solvent of the raw materials, so that the raw materials form particles; S3, when the hot air is in the processing cavity, the heat increases, so that the air in the processing cavity expands to push the shielding plate, so that the shielding between the transfer pipe and the processing cavity is removed, and then the transfer pipe can discharge the tail gas into the interlayer to preheat the storage tank; S4, when the tail gas enters the interlayer, it also enters the cavity on the stirring blade through the air pipe, and is discharged through the air outlet hole, and the airflow assists stirring.

[0016] The beneficial effects of the present application are as follows: When the present application is used, the hot air machine blows air into the processing cavity, so that the hot air dries the raw materials, the particles formed by the raw materials are discharged through the discharge port, the hot air blown in the processing cavity moves gradually into the transfer pipe, and enters the interlayer of the storage tank through the transfer pipe, and the storage tank is preheated by the waste heat of the tail gas, which increases the utilization rate of the tail gas and increases the practicality of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a three-dimensional structure schematic diagram of the present application; Figure 2 is a three-dimensional sectional view of the drying box structure of the present application; Figure 3 is a three-dimensional sectional view of the stirring piece structure of the present application; Figure 4 is a three-dimensional sectional view of the stirring blade of the present application; Figure 5 is a three-dimensional sectional view of the structure on the inclined table of the present application; Figure 6 is a three-dimensional sectional view of the air outlet pipe of the present application; Figure 7 is a three-dimensional sectional view of the structure on the impact plate of the present application; Figure 8 is a three-dimensional sectional view of the structure on the storage tank of the present application; Figure 9 is a three-dimensional sectional view of the structure in the present application Figure 8 ; and Figure 10 is a three-dimensional sectional view of the structure in the present application

[0018] Reference signs: 1, drying box; 101, hot air cavity; 102, processing cavity; 103, hot air machine; 104, filter plate; 105, discharge port; 2, storage tank; 201, discharge pipe; 202, interlayer; 203, transfer pipe; 204, exhaust pipe; 3. Stirring member; 301. Stirring blade; 302. Cavity; 303. Cover; 304. Ventilation pipe; 305. Air outlet hole; 4. Shielding plate; 5. Connecting spring; 6. Impact plate; 7. Inclined table; 8. Hose; 9. Rubber ball; 10. Exhaust member; 1001. Reset spring; 1002. Blocking plate; 1003. Shielding block; 1004. Shrinkage; 1005. Inserting block; 11. Air outlet pipe; 12. Conical cylinder; 13. Through hole; 14. Through hole; 15. Contact spring; 16. Inserting rod; 17. Spring telescopic rod; 18. Scraper plate; 19. Weight reduction cavity. DETAILED DESCRIPTION

[0019] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0020] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] Furthermore, the terms "mount", "set", "provided with", "connect", "connected", "socketed" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] As shown in Figure 1 Figure 9 The present application proposes a spray granulation device in some embodiments, which comprises a drying box 1, a hot air chamber 101 and a processing chamber 102 are included in the drying box 1, a hot air fan 103 is installed in the hot air chamber 101, a filter plate 104 is installed between the hot air chamber 101 and the processing chamber 102, a discharge port 105 is formed on the processing chamber 102, the hot air fan 103 is composed of a blower, a heater and a control circuit according to the prior art, which is used to blow hot air in the drying box 1, an air inlet is formed in the hot air chamber 101 in the drying box 1, which is used to ensure the input of airflow, the drying box 1 is limited by the filter plate 104, one side of which is the hot air chamber 101 where the hot air fan 103 is installed, and the other side is the processing chamber 102, the filter plate 104 reduces the possibility of raw materials falling into the hot air chamber 101 and reduces the interference of raw materials on the hot air fan 103, thereby increasing the practicability of the device. When the raw materials enter the processing chamber 102, the hot air blown by the hot air fan 103 dries the raw materials, so that the dried raw materials fall outside the device through the discharge port 105 and are collected. The discharge port 105 can be provided with a solenoid valve to hinder the flow of raw materials, so that the hot air has enough time to dry them, thereby increasing the feasibility of the device. A storage tank 2 is installed on the drying box 1, and a discharge pipe 201 is installed on the storage tank 2, which is in communication with the processing chamber 102. A stirring element 3 is installed in the storage tank 2, a sandwich layer 202 is formed on the wall of the storage tank 2, a transfer pipe 203 is installed in the processing chamber 102 for tail gas, the free end of the transfer pipe 203 is in communication with the sandwich layer 202, an exhaust pipe 204 is installed on the storage tank 2, which is in communication with the sandwich layer 202, and the storage tank 2 is connected with the raw material conveying pipe through the pipe body, and then the raw materials are discharged into the drying box 1 through the discharge pipe 201. A solenoid valve is installed on the discharge pipe 201, so that the storage tank 2 can discharge the raw materials into the drying box 1 in batches, which is convenient for the raw materials to be dried in an appropriate amount each time, thereby increasing the practicability of the device. ​When the device is in use, the hot air blower 103 is also started to blow when the material falls into the processing cavity 102 and is blown and dried by the hot air, so that the material can form particles. After the airflow blows through the material, it enters the transfer pipe 203 and then enters the interlayer 202 through the transfer pipe 203 to preheat the material in the storage tank 2, thereby increasing the utilization rate of the tail gas and the practicality of the device. Compared with the prior art, when in use, the hot air blower 103 blows into the processing cavity 102 to dry the material, and the particles formed by the material are discharged through the discharge port 105. The moving hot air in the processing cavity 102 gradually moves into the transfer pipe 203 and then enters the interlayer 202 of the storage tank 2 through the transfer pipe 203. The storage tank 2 is preheated by the waste heat of the tail gas, thereby increasing the utilization rate of the tail gas and the practicality of the device.

[0024] As shown in Figure 3 , Figure 4 and Figure 9 , the partial structure of the stirring piece 3 is disclosed. In some embodiments, the stirring piece 3 includes a stirring blade 301 rotatably installed in the storage tank 2. A motor is installed on the top of the storage tank 2, a belt pulley is installed on the output shaft of the motor, and a belt pulley is installed on the rotating shaft of the stirring blade 301. The belt pulleys are connected by a belt drive, thereby driving the stirring blade 301 to rotate when the motor is started. When the device is in use, the stirring blade 301 is rotated to stir the material in the storage tank 2, so that the material can be better mixed, thereby increasing the practicality of the device. A cavity 302 is formed in the stirring blade 301, a cover 303 is rotatably installed on the cavity 302, an air pipe 304 is installed on the interlayer 202, the free end of the air pipe 304 penetrates through the cover 303 and communicates with the cavity 302, and a plurality of air outlets 305 are formed in the rotating shaft of the stirring blade 301 to communicate the cavity 302 with the inside of the storage tank 2. Since the cover 303 is rotatably connected with the cavity 302, the cover 303 will not rotate when the stirring blade 301 rotates, thereby preventing the air pipe 304 installed thereon from being tangled together due to the rotation of the stirring blade 301, thereby increasing the feasibility of the device. When the device is in use, part of the airflow enters the cavity 302 in the stirring blade 301 through the air pipe 304 after entering the interlayer 202, and is discharged into the storage tank 2 through the air outlets 305. When the stirring blade 301 stirs the material, the airflow further stirs the material, thereby increasing the stirring effect of the device.

[0025] As shown in Figure 2As shown, a portion of the structure within the processing chamber 102 is disclosed. In some embodiments, the discharge port 105 has an inclined surface along its edge. A baffle plate 4 is hinged within the processing chamber 102 inside the drying chamber 1. A connecting spring 5 is installed between the baffle plate 4 and the processing chamber 102. An impact plate 6 is installed inside the processing chamber 102 to abut against the baffle plate 4. The baffle plate 4 further divides the processing chamber 102 into a feeding chamber and an exhaust chamber. During use, when the hot air blower 103 heats the raw material, the airflow is blocked by the baffle plate 4, preventing it from directly entering the exhaust chamber and being discharged through the transfer pipe 203. Instead, the airflow remains in the feeding chamber for a longer period to heat the raw material. When air continuously enters the feeding chamber, the increased air pressure and heat within the feeding chamber also lead to… The increased gas pressure, coupled with the fixed sidewalls of the feed chamber, means the airflow can only compress the baffle plate 4, forcing the connecting spring 5 to be compressed. At this point, the baffle plate 4 rotates and tilts, creating a gap between it and the inner wall of the drying chamber 1. The airflow can then enter the outlet chamber and pass through the transfer pipe 203 into the interlayer 202. After the airflow is output by the transfer pipe 203, the gas pressure in the feed chamber decreases, and with the exhaust gas, the heat in the feed chamber decreases, further reducing the pressure in the feed chamber. At this point, the connecting spring 5 resets, pushing the baffle plate 4 to reset. When the baffle plate 4 resets, it collides with the impact plate 6, causing vibration inside the drying chamber 1. This forces the raw material to be fed more smoothly along the inclined surface, increasing the practicality of the device.

[0026] like Figure 2 As shown, a portion of the structure within the processing chamber 102 is disclosed. In some embodiments, a ramp 7 is installed on the drying chamber 1 within the processing chamber 102, and a baffle plate 4 is hinged to the ramp 7. The ramp 7 faces the discharge port 105. When the device is in use, the raw material is blown onto the ramp 7 by hot air and dried on the ramp 7. After drying, the dried particles fall into the discharge port 105 as guided by the ramp 7. As the baffle plate 4 resets, it collides with the impact plate 6, causing vibration in the drying chamber 1. This allows the particles that are attached to the ramp 7 to fall more easily with the ramp 7, increasing the practicality of the device.

[0027] like Figure 2 and Figure 5As shown, a portion of the structure inside the drying chamber 1 is disclosed. In some embodiments, a flexible hose 8 is installed inside the processing chamber 102 of the drying chamber 1. One end of the flexible hose 8 is connected to a transfer pipe 203. When airflow enters the transfer pipe 203, some airflow will enter the flexible hose 8. A rubber ball 9 is installed on the other end of the hose, which is used to abut against the baffle plate 4. An exhaust device 10 is installed on the rubber ball 9 to discharge the gas inside the rubber ball 9. The rubber ball 9 is located on the side of the baffle plate 4 near the exhaust chamber. When the device is in use, the airflow passes through the transfer pipe. As 203 enters the interlayer 202, it also enters the rubber ball 9 through the hose 8, causing the rubber ball 9 to expand. As the rubber ball 9 gradually expands, it gradually comes into contact with the baffle plate 4, which, in conjunction with the connecting spring 5, forces the baffle plate 4 to reset. This further increases the possibility of the baffle plate 4 resetting and greatly reduces the possibility that the connecting spring 5 is not strong enough to push the baffle plate 4 to reset due to excessive air pressure in the drying oven 1. The expansion of the rubber ball 9 pushes the baffle plate 4, assisting in the resetting of the baffle plate 4, and increases the feasibility of the device. After the rubber ball 9 expands and pushes the baffle plate 4, the air inside the rubber ball 9 can be expelled through the cooperation of the exhaust device 10, making it easier for the rubber ball 9 to push the baffle plate 4 again, thus increasing the feasibility of the device.

[0028] like Figure 8 As shown, a portion of the structure of the transfer pipe 203 is disclosed. In some embodiments, a conical cylinder 12 is installed on one end of the transfer pipe 203 located inside the processing chamber 102. The conical cylinder 12 has a through hole 13 for airflow. The diameter of the conical cylinder 12 gradually decreases from the end connected to the transfer pipe 203 to the end away from the transfer pipe 203. The end of the conical cylinder 12 with a smaller diameter faces into the processing chamber 102. The through hole 13 on it enables the conical cylinder 12 to act as a filter, so that when the exhaust gas enters the transfer pipe 203, the particles inside can be blocked by the conical cylinder 12, and the particles attached to the conical cylinder 12 can also be guided by its inclined surface so that the particles can fall better. Furthermore, the vibration generated by the impact plate 6 when the baffle plate 4 is reset can also better enable the particles attached to the conical cylinder 12 to fall, increasing the practicality of the device.

[0029] like Figure 6As shown, the partial structure of the exhaust member 10 is disclosed, in some embodiments, the exhaust member 10 includes a gas outlet pipe 11 installed on the rubber ball 9, the gas flow in the rubber ball 9 can enter the gas outlet pipe 11, the reset spring 1001 is installed in the gas outlet pipe 11, the blocking plate 1002 is installed on the free end of the reset spring 1001, the diameter of the blocking plate 1002 is slightly smaller than the pipe diameter of the gas outlet pipe 11, so that the gas flow can pass through the blocking plate 1002 while also pushing the blocking plate 1002, the blocking block 1003 is installed in the gas outlet pipe 11 to form the neck 1004 in the gas outlet pipe 11, the inserting block 1005 is installed on the blocking plate 1002 for inserting into the neck 1004, the cross-sectional area of the blocking plate 1002 along the radial direction of the gas outlet pipe 11 is greater than that of the inserting block 1005 along the radial direction of the gas outlet pipe 11, when the blocking plate 1002 is inserted into the neck 1004, the gas outlet pipe 11 is blocked, the reset spring 1001 forces the blocking plate 1002 away from the blocking block 1003, when the rubber ball 9 expands, the gas flow pushes the blocking plate 1002, and then forces the blocking plate 1002 to insert into the neck 1004, and then forces the blocking plate 1002 to block the outlet of the gas outlet pipe 11, so that the rubber ball 9 can be sealed, and the rubber ball 9 can be expanded smoothly to assist the blocking plate 4 to reset; When the blocking plate 4 resets, the temperature of the exhaust cavity in the processing cavity 102 is lower than that of the feeding cavity due to the blocking of the blocking plate 4, and then the temperature in the rubber ball 9 decreases, when the gas flow pushing force in the rubber ball 9 is less than the reset pulling force of the reset spring 1001, the blocking plate 1002 is separated from the neck 1004 by the reset spring 1001, so that the gas outlet pipe 11 is connected with the outside, and then the gas flow in the rubber ball 9 can be smoothly discharged, which is convenient for subsequent reset of the blocking plate 4; Wherein the pipe opening of the gas outlet pipe 11 can also penetrate the exhaust cavity and be located outside the drying box 1, and the installation position can meet the smooth exhaust.

[0030] As Figure 7As shown, the structure on the impact plate 6 is disclosed, in some embodiments, the impact plate 6 is provided with a through hole 14, the drying box 1 is provided with a resisting spring 15 in the processing cavity 102, the free end of the resisting spring 15 is provided with an inserting rod 16 for inserting into the through hole 14, the inserting rod 16 is provided with a spring telescopic rod 17, the end of the spring telescopic rod 17 is hinged with a scraping plate 18, the scraping plate 18 is in contact with the surface of the inclined table 7, the inserting rod 16 is slidingly inserted into the through hole 14, when the shielding plate 4 impacts the impact plate 6, the end of the inserting rod 16 is also pushed, when the inserting rod 16 is pushed, the end of the inserting rod 16 pushes the spring telescopic rod 17, and then the scraping plate 18 slides on the surface of the inclined table 7, the scraping plate 18 provides an initial force for the particles on the inclined table 7, which is more convenient for the particles to fall on the inclined table 7, and reduces the possibility of the particles adhering to the inclined table 7, the principle is the same as the slide, if the object on the slide has no initial force, it will stay on the slide due to the friction, but if it has an initial force, it can make the particles fall smoothly, which increases the feasibility of the device. During the sliding process of the scraping plate 18, the spring telescopic rod 17 and the scraping plate 18 rotate at the end of the spring telescopic rod 17 to keep the scraping plate 18 always in contact with the surface of the inclined table 7, which increases the feasibility of the device.

[0031] As shown in the drawings, Figure 2 In some embodiments, the inclined table 7 is provided with a weight-reducing cavity 19, so that the inclined table 7 has a slope wall thickness, and the thickness is reduced, the weight-reducing cavity 19 makes the inclined table 7 a hollow structure, so that when the drying box 1 vibrates, the inclined table 7 can also vibrate better, which is convenient for the particles to fall on the inclined table 7, and increases the practicability of the device. Figure 10 As shown, the application also provides a spray granulation method, in some embodiments, the spray granulation device is suitable for any of the above, including the following steps: S1, placing the raw materials into the storage tank 2, and stirring the raw materials by the stirring blade 301; S2, after the raw materials are stirred, the communication between the processing cavity 102 and the transfer pipe 203 is blocked by the shielding plate 4, the airflow blown by the hot air blower 103 dries the solvent of the raw materials to form particles; S3, when the hot air is in the processing cavity 102, the heat increases, the air in the processing cavity 102 expands to push the shielding plate 4, so that the shielding between the transfer pipe 203 and the processing cavity 102 is removed, and then the transfer pipe 203 can discharge the tail gas into the interlayer 202 to preheat the storage tank 2; S4, when the exhaust gas enters into the interlayer 202, also through the air pipe 304 into the cavity 302 on the stirring blade 301, will be discharged through the air outlet hole 305 on it, through the airflow to assist stirring.

[0032] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A spray granulation apparatus characterized by, Include: Drying box (1), including hot air cavity (101) and processing cavity (102) in it, hot air fan (103) is installed in hot air cavity (101), filter plate (104) is installed between hot air cavity (101) and processing cavity (102), and discharge opening (105) is formed on processing cavity (102); Storage tank (2), a discharge pipe (201) is installed on it and communicated with processing cavity (102), stirring part (3) is installed in storage tank (2), interlayer (202) is formed on the wall thickness of storage tank (2), and transfer pipe (203) is installed in processing cavity (102) for tail gas passing, the free end of transfer pipe (203) is communicated with interlayer (202), and exhaust pipe (204) is installed on storage tank (2) and communicated with interlayer (202).

2. The spray granulating apparatus according to claim 1, wherein The stirring part (3) includes stirring blade (301) rotatably installed in the storage tank (2), the stirring blade (301) is provided with cavity (302), the cavity (302) is rotatably provided with cover (303), the interlayer (202) is provided with air pipe (304), the free end of the air pipe (304) penetrates the cover (303) and is communicated with the cavity (302), and a plurality of air outlet holes (305) are formed on the rotating shaft of the stirring blade (301) and communicated with the cavity (302) and the inside of the storage tank (2).

3. The spray granulation apparatus according to claim 2, wherein The discharge opening (105) is provided with an inclined surface along the edge, the blocking plate (4) is hingedly connected in the processing cavity (102) in the drying box (1), the connecting spring (5) is installed between the blocking plate (4) and the processing cavity (102), and the impact plate (6) is installed in the processing cavity (102) and used for abutting against the blocking plate (4).

4. The spray granulation apparatus according to claim 3, wherein The inclined table (7) is installed on the drying box (1) and located in the processing cavity (102), the blocking plate (4) is hingedly connected on the inclined table (7), and the inclined surface of the inclined table (7) faces the discharge opening (105).

5. The spray granulation apparatus according to claim 4, wherein The hose (8) is installed on the drying box (1) and located in the processing cavity (102), one end of the hose (8) is communicated with the transfer pipe (203), the other end is provided with rubber ball (9), the rubber ball (9) is used for abutting against the blocking plate (4), the rubber ball (9) is provided with exhaust part (10), and the exhaust part (10) is used for discharging the gas in the rubber ball (9).

6. The spray granulation apparatus according to claim 5, wherein The conical cylinder (12) is installed on one end of the transfer pipe (203) in the processing cavity (102), the through hole (13) for airflow passing is formed on the conical cylinder (12), and the diameter of the conical cylinder (12) gradually decreases from the end connected with the transfer pipe (203) to the end away from the transfer pipe (203).

7. The spray granulation apparatus according to claim 6, wherein The exhaust member (10) includes a gas outlet pipe (11) mounted on a rubber ball (9), a reset spring (1001) is mounted in the gas outlet pipe (11), a blocking plate (1002) is mounted on the free end of the reset spring (1001), a blocking block (1003) is mounted in the gas outlet pipe (11) to form a neck (1004) in the gas outlet pipe (11), an inserting block (1005) is mounted on the blocking plate (1002) for being inserted into the neck (1004), and the cross-sectional area of the blocking plate (1002) along the radial direction of the gas outlet pipe (11) is greater than the cross-sectional area of the inserting block (1005) along the radial direction of the gas outlet pipe (11).

8. The spray granulation apparatus according to claim 7, wherein The impact plate (6) is provided with a through hole (14), the drying box (1) is provided with a resisting spring (15) in the processing cavity (102), the free end of the resisting spring (15) is provided with an inserting rod (16) for being inserted into the through hole (14), the inserting rod (16) is provided with a spring telescopic rod (17), the end of the spring telescopic rod (17) is hinged with a scraping plate (18), and the scraping plate (18) is in contact with the surface of the inclined table (7).

9. The spray granulation apparatus according to claim 8, wherein The inclined table (7) is provided with a weight-reducing cavity (19), so that the inclined table (7) has a reduced thickness of the inclined surface wall.

10. A spray granulation method using the spray granulation apparatus according to any one of claims 1 to 9, characterized by, The method comprises the following steps: S1, placing raw materials into a storage tank (2) and stirring the raw materials by stirring blades (301); S2, after the raw materials are stirred, discharging the raw materials into a processing cavity (102), blocking the communication between the processing cavity (102) and a transfer pipe (203) by a blocking plate (4), and drying the solvent of the raw materials by the airflow blown by a hot air blower (103) to form particles; S3, when hot air is in the processing cavity (102), the heat increases, the air in the processing cavity (102) expands to push the blocking plate (4), so that the blocking between the transfer pipe (203) and the processing cavity (102) is removed, and then the transfer pipe (203) can discharge tail gas into a interlayer (202) to preheat the storage tank (2); S4, when the tail gas enters the interlayer (202), it also enters the cavity (302) on the stirring blades (301) through the air pipe (304), and is discharged through the air holes (305) thereon, and the airflow assists stirring.

Images