Spray drying granulator
By designing the buffer box and buffer sheet structure in the spray drying granulator, and using compression springs to buffer the liquid flow, the problem of imbalance in the atomization pressure when the liquid flow increases is solved, and the effect of uniform particle size and efficient drying granulation is achieved.
Patent Information
- Application Number
- CN202421553918.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-03
AI Technical Summary
When the liquid flow rate of the spray drying granulator increases, the centrifugal atomizer cannot adapt in time, resulting in an imbalance in the atomization pressure, affecting the atomization effect, resulting in a large particle size or uneven distribution.
A spray drying granulator is designed, using a buffer box and buffer sheet structure, which buffers the liquid flow through the force of the compression spring to prevent the liquid from directly impacting the centrifugal atomizer and maintain the atomization effect.
It effectively prevents the atomization pressure imbalance when the liquid flow rate suddenly increases, maintains the uniform particle size distribution and efficient drying and granulation effect.
Smart Images
Figure CN222983727U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of granulators, and particularly relates to a spray drying granulator. Background Art
[0002] The spray drying granulator integrates drying and granulation, can convert materials into dried products meeting the particle size requirements, and the spray drying granulator can be widely applied to industries such as chemical industry, medicine, food, etc., and is suitable for drying and granulation treatment of various materials;
[0003] When the spray drying granulator dries and granulates a liquid, the liquid is conveyed into a centrifugal atomizer in a drying tank through a delivery pump, and due to the high-speed rotation of the centrifugal atomizer, the liquid is made into fine droplets and enters the drying tank. Since the centrifugal atomizer needs to rely on an external delivery pump to convey the liquid into the centrifugal atomizer during high-speed rotation, and this conveying process is direct. At the same time, since the operation of the centrifugal atomizer depends on the balance of precise atomization pressure and liquid flow rate, a sudden increase in the conveying volume may cause the atomization pressure to fail to adapt in time, resulting in an imbalance of the atomization pressure, thereby affecting the atomization effect. That is, when the liquid flow rate increases, the centrifugal atomizer will have problems in effectively refining the liquid into tiny particles, resulting in too large particle size or uneven distribution of the atomized particles. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a spray drying granulator, which can effectively solve the problems in the background art.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] A spray drying granulator, comprising a workbench, on the top of which a drying tank, a hot air blower and an aggregate tank are respectively fixedly installed. One end of the aggregate tank is fixedly installed with an exhaust fan, and the exhaust fan is also fixedly installed on the workbench. The aggregate tank and the drying tank are also fixedly connected through a feeding pipe. The top of the drying tank is fixedly installed with a top cover. An air guide pipe and a liquid injection pipe are respectively fixedly installed on the outer side of the top cover. The end of the liquid injection pipe away from the top cover is connected to an external delivery pump, and the end of the air guide pipe away from the top cover is fixedly connected to the output end of the hot air blower. An electric motor is also fixedly installed on the top of the top cover. A shaft sleeve is fixedly installed on the inner top of the top cover. The output end of the electric motor is fixedly installed with a rotating shaft. The bottom of the rotating shaft passes through the shaft sleeve and extends into the top cover and is fixedly installed with a centrifugal atomizer. A buffer box is also fixedly installed at the bottom of the shaft sleeve. A buffer piece is movably installed in the buffer box. The hot air blower, the exhaust fan and the electric motor are respectively electrically connected to an external controller through connecting wires.
[0007] Preferably, a fixed seat is fixedly installed at the inner bottom of the centrifugal atomizer. The centrifugal atomizer is fixedly installed at the bottom of the rotating shaft through the fixed seat. A first sealing ring is fixedly installed at the top of the centrifugal atomizer. A sealing bearing is inserted and installed inside the first sealing ring. By setting the first sealing ring and the sealing bearing at the top of the centrifugal atomizer, it is convenient for a rotational connection between the bottom of the buffer box and the centrifugal atomizer.
[0008] Preferably, first fixing flanges are fixedly installed at both the top and the bottom of the shaft sleeve. The upper first fixing flange is fixedly installed at the inner top of the top cover.
[0009] Preferably, a second fixing flange is fixedly installed at the top of the buffer box. A joint is also fixedly installed on the buffer box outside the second fixing flange. One end of the liquid injection pipe is fixedly installed inside the joint. A second sealing ring is fixedly installed at the bottom of the buffer box.
[0010] Preferably, a partition pipe is fixedly installed at the inner top of the buffer box. A plurality of flow diversion grooves are formed inside the partition pipe. A plurality of installation grooves are also formed outside the partition pipe at a position below the flow diversion grooves. A support is fixedly installed inside the installation groove. Through the cooperation of the partition pipe, the flow diversion grooves and the buffer piece, the liquid entering the centrifugal atomizer can be buffered.
[0011] Preferably, a plurality of fixed shafts are fixedly installed at the bottom of the buffer piece. The buffer piece is inserted and installed outside the partition pipe. The bottom of the fixed shaft is inserted and installed inside the corresponding support. A compression spring is also sleeved on the fixed shaft between the support and the buffer piece. The buffer piece is inserted and installed outside the partition pipe through the fixed shaft and is located inside the buffer box. The buffer piece can buffer the liquid entering the centrifugal atomizer by means of the acting force of the compression spring, preventing the sudden increase in flow rate from affecting the atomization effect.
[0012] Preferably, the second fixing flange is fixedly installed at the bottom of the corresponding first fixing flange through bolts. The second sealing ring is inserted and installed inside the inner ring of the sealing bearing.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] In the spray drying granulator of the utility model, a buffer box is arranged on the shaft sleeve at a position above the centrifugal atomizer. A partition pipe is fixedly installed inside the buffer box, and a buffer piece with a certain upward pressure is inserted outside the partition pipe. When the external flow rate suddenly increases, the supporting force of a plurality of compression springs on the buffer piece can be used to buffer the increasing pressure of the liquid, thereby preventing the surging liquid from entering the centrifugal atomizer, and preventing the liquid atomization particles from becoming larger due to the unimproved rotational speed of the centrifugal atomizer, which affects the drying and granulation effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the main structure of the present utility model;
[0016] Figure 2 Schematic diagram of the centrifugal atomizer and the bushing structure of the present utility model;
[0017] Figure 3 Schematic diagram of the disassembled structure of the centrifugal atomizer of the present utility model;
[0018] Figure 4 Cross-sectional view of the buffer box of the present utility model;
[0019] Figure 5 Schematic diagram of the buffer sheet structure of the present utility model.
[0020] In the figure: 1, workbench; 2, drying tank; 3, hot air blower; 4, aggregate tank; 5, exhaust fan; 6, feed pipe; 7, top cover; 8, air duct; 9, liquid injection pipe; 10, motor; 11, rotating shaft; 12, bushing; 13, centrifugal atomizer; 14, buffer box; 15, buffer sheet; 16, fixed seat; 17, first sealing ring; 18, sealed bearing; 19, first fixed flange; 20, second fixed flange; 21, second sealing ring; 22, partition pipe; 23, shunt groove; 24, installation groove; 25, support; 26, fixed shaft; 27, compression spring; 28, joint. Specific embodiments
[0021] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] As Figures 1 - 5 shown, a spray drying granulator provided by the present utility model includes a workbench 1, a drying tank 2, a hot air blower 3 and an aggregate tank 4 are respectively fixedly installed on the top of the workbench 1, an exhaust fan 5 is fixedly installed at one end of the aggregate tank 4, and the exhaust fan 5 is also fixedly installed on the workbench 1. The aggregate tank 4 and the drying tank 2 are also fixedly connected by a feed pipe 6. A top cover 7 is fixedly installed on the top of the drying tank 2. An air duct 8 and a liquid injection pipe 9 are respectively fixedly installed on the outside of the top cover 7. One end of the liquid injection pipe 9 away from the top cover 7 is connected to an external transfer pump, and one end of the air duct 8 away from the top cover 7 is fixedly connected to the output end of the hot air blower 3. A motor 10 is also fixedly installed on the top of the top cover 7. A bushing 12 is fixedly installed on the inner top of the top cover 7. The output end of the motor 10 is fixedly installed with a rotating shaft 11. The bottom of the rotating shaft 11 passes through the bushing 12 and extends into the top cover 7 and is fixedly installed with a centrifugal atomizer 13. A buffer box 14 is also fixedly installed at the bottom of the bushing 12. A buffer sheet 15 is movably installed in the buffer box 14. The hot air blower 3, the exhaust fan 5 and the motor 10 are respectively electrically connected to an external controller through connecting wires.
[0023] AsFigures 2 - 3 As shown, a fixed seat 16 is fixedly installed at the inner bottom of the centrifugal atomizer 13. The centrifugal atomizer 13 is fixedly installed at the bottom of the rotating shaft 11 through the fixed seat 16. A first sealing ring 17 is fixedly installed at the top of the centrifugal atomizer 13. A sealing bearing 18 is inserted and installed inside the first sealing ring 17. The first sealing ring 17 and the sealing bearing 18 are arranged at the top of the centrifugal atomizer 13, which is convenient for a rotational connection between the bottom of the buffer box 14 and the centrifugal atomizer 13. First fixing flanges 19 are fixedly installed at both the top and the bottom of the shaft sleeve 12, and the upper first fixing flange 19 is fixedly installed at the inner top of the top cover 7;
[0024] As Figures 3 - 5 shown, a second fixing flange 20 is fixedly installed at the top of the buffer box 14. A joint 28 is also fixedly installed on the buffer box 14 outside the second fixing flange 20. One end of the liquid injection pipe 9 is fixedly installed in the joint 28. A second sealing ring 21 is fixedly installed at the bottom of the buffer box 14. A partition pipe 22 is fixedly installed at the inner top of the buffer box 14. A plurality of flow diversion grooves 23 are formed inside the partition pipe 22. A plurality of installation grooves 24 are also formed on the outside of the partition pipe 22 at a position below the flow diversion grooves 23. A support 25 is fixedly installed in the installation grooves 24. Through the cooperation of the partition pipe 22, the flow diversion grooves 23 and the buffer sheet 15, the liquid entering the centrifugal atomizer 13 can be buffered. A plurality of fixing shafts 26 are fixedly installed at the bottom of the buffer sheet 15. The buffer sheet 15 is inserted and installed outside the partition pipe 22. The bottom of the fixing shaft 26 is inserted and installed in the corresponding support 25. A compression spring 27 is also sleeved on the fixing shaft 26 between the support 25 and the buffer sheet 15. The buffer sheet 15 is inserted and installed outside the partition pipe 22 through the fixing shaft 26 and is located inside the buffer box 14. The buffer sheet 15 can buffer the liquid entering the centrifugal atomizer 13 by means of the acting force of the compression spring 27, preventing the sudden increase in flow rate from affecting the atomization effect. The second fixing flange 20 is fixedly installed at the bottom of the corresponding first fixing flange 19 through bolts, and the second sealing ring 21 is inserted and installed in the inner ring of the sealing bearing 18.
[0025] It should be noted that the present utility model is a spray drying granulator. After the atomized liquid is transported to the buffer box 14 through the liquid injection pipe 9 and the joint 28 by an external transfer pump, it uses the pressure of the liquid to press down the buffer piece 15, and then the buffer piece 15 drives the multiple fixed shafts 26 at the bottom to move downward in the corresponding supports 25. At the same time, the buffer piece 15 uses the pressure of the liquid to compress the compression spring 27 onto the corresponding support 25, so that under the condition that the pressure remains unchanged, the liquid can uniformly enter the centrifugal atomizer 13 through the multiple flow-through grooves 23 in the partition pipe 22. At the same time, the output end of the motor 10 drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the centrifugal atomizer 13 to rotate at a high speed, so as to accelerate and centrifugally atomize the liquid entering the centrifugal atomizer 13 by using the multi-channels inside, and the liquid is dried and granulated by the hot air entering the workbench 1 through the hot air blower 3, the air guide pipe 8, and the top cover 7. After granulation is completed, it is collected through the cooperation of the aggregate tank 4 and the exhaust fan 5. When the flow rate of the transported liquid suddenly increases, the buffer piece 15, the fixed shaft 26, and the compression spring 27 can be used to buffer the surging liquid pressure to prevent direct impact on the centrifugal atomizer 13 and cause a decrease in the atomization effect of some liquid.
[0026] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A spray drying granulator, characterized in that: The invention comprises a workbench (1), wherein a drying tank (2), a hot air blower (3) and a material collecting tank (4) are fixedly mounted on the top of the workbench (1), an exhaust fan (5) is fixedly mounted on one end of the material collecting tank (4), and the exhaust fan (5) is also fixedly mounted on the workbench (1), the material collecting tank (4) and the drying tank (2) are also fixedly connected via a material conveying pipe (6), a top cover (7) is fixedly mounted on the top of the drying tank (2), an air guide pipe (8) and a liquid injection pipe (9) are fixedly mounted on the outside of the top cover (7), the end of the liquid injection pipe (9) away from the top cover (7) is connected to an external conveying pump, and the end of the air guide pipe (8) away from the top cover (7) is connected to an external conveying pump. One end is fixedly connected to the output end of the hot air blower (3); a motor (10) is also fixedly mounted on the top of the top cover (7); a shaft sleeve (12) is fixedly mounted on the top of the top cover (7); a rotating shaft (11) is fixedly mounted on the output end of the motor (10); the bottom of the rotating shaft (11) passes through the shaft sleeve (12) and extends into the top cover (7) and is fixedly mounted with a centrifugal atomizer (13); a buffer box (14) is also fixedly mounted on the bottom of the shaft sleeve (12); a buffer sheet (15) is movably mounted in the buffer box (14); the hot air blower (3), the exhaust fan (5) and the motor (10) are electrically connected to an external controller via connecting wires.
2. A spray drying granulator according to claim 1, characterized in that: A fixing seat (16) is fixedly installed at the bottom of the centrifugal atomizer (13), and the centrifugal atomizer (13) is fixedly installed at the bottom of the rotating shaft (11) through the fixing seat (16). A first sealing ring (17) is fixedly installed at the top of the centrifugal atomizer (13), and a sealing bearing (18) is inserted and installed inside the first sealing ring (17). The first sealing ring (17) and the sealing bearing (18) are arranged at the top of the centrifugal atomizer (13) to facilitate a rotational connection between the bottom of the buffer box (14) and the centrifugal atomizer (13).
3. A spray drying granulator according to claim 1, characterized in that: The top and bottom of the shaft sleeve (12) are both fixedly mounted with first fixed flanges (19), and the first fixed flange (19) above is fixedly mounted on the top of the top cover (7).
4. A spray drying granulator according to claim 2, characterized in that: A second fixed flange (20) is fixedly mounted on the top of the buffer box (14); a joint (28) is also fixedly mounted on the buffer box (14) outside the second fixed flange (20); one end of the injection pipe (9) is fixedly mounted in the joint (28); and a second sealing ring (21) is fixedly mounted on the bottom of the buffer box (14).
5. A spray drying granulator according to claim 1, characterized in that: A partition tube (22) is fixedly installed at the top of the buffer box (14), a plurality of branch flow grooves (23) are provided on the inner side of the partition tube (22), a plurality of mounting grooves (24) are also provided on the outer side of the partition tube (22) located below the branch flow grooves (23), and a support (25) is fixedly installed in the mounting groove (24). Through the cooperation between the partition tube (22), the branch flow grooves (23) and the buffer sheet (15), liquid entering the centrifugal atomizer (13) can be buffered.
6. A spray drying granulator according to claim 1, characterized in that: A plurality of fixed shafts (26) are fixedly mounted at the bottom of the buffer sheet (15). The buffer sheet (15) is inserted and mounted on the outside of the partition tube (22). The bottom of the fixed shaft (26) is inserted and mounted in the corresponding support (25). The fixed shaft (26) located between the support (25) and the buffer sheet (15) is also provided with a compression spring (27). The buffer sheet (15) is inserted and mounted on the outside of the partition tube (22) through the fixed shaft (26) and is located in the buffer box (14). With the help of the force of the compression spring (27), the liquid entering the centrifugal atomizer (13) can be buffered to prevent a sudden increase in flow rate from affecting the atomization effect.
7. A spray drying granulator according to claim 4, characterized in that: The second fixing flange (20) is fixedly mounted on the bottom of the corresponding first fixing flange (19) by means of bolts, and the second sealing ring (21) is inserted and installed in the inner ring of the sealing bearing (18).