Temperature compensator for fluidized bed dryer

Abstract

This utility model discloses a temperature compensator for a fluidized bed dryer, relating to the field of drying equipment technology. It includes a drying chamber with a hot air fan located on the right side and an air inlet duct fixedly connected to the right side. The drying chamber contains a temperature compensation component to compensate for the temperature of the material at the top. This fluidized bed dryer's temperature compensator is equipped with an air distributor, a constant air volume valve, an inner cylinder, an outer cylinder, a temperature compensation pipe, and nozzles. During use, the material is evenly spread on a permeable grate. When temperature compensation is needed, the constant air volume valve is opened, and some of the hot air in the air inlet duct rises along the air distributor, passes through the inner cylinder and outer cylinder, reaches the temperature compensation pipe, and is then sprayed downwards through the nozzles at the bottom of the temperature compensation pipe to compensate for the temperature of the material at the top. This achieves the function of top temperature compensation, solving the problem of devices lacking this function.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a temperature compensator for a fluidized bed dryer. Background Technology

[0002] Fluidized bed dryers are a common type of drying equipment that typically uses hot air drying and are widely used in pharmaceutical, food, and chemical industries.

[0003] Most fluidized bed dryers currently on the market are similar in overall structure and drying process. The material is evenly spread on a permeable grate. Hot air blown by a hot air blower passes through the holes in the permeable grate to fluidize the material to be dried on the grate, making it boil evenly. During the fluidization and boiling process, heat exchange occurs. The material at the bottom absorbs heat and is dried first. The temperature of the hot air passing through the material drops sharply during the heat exchange process. After reaching the top of the material, the temperature drops to a very low level, almost reaching temperature equilibrium with the material at the top. At this point, it is difficult to dry the material at the top further. The material is heated unevenly from top to bottom, and there is still room for improvement in drying efficiency. It does not have the function of top temperature compensation.

[0004] Now, a novel temperature compensator for a fluidized bed dryer is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a temperature compensator for a fluidized bed dryer to solve the problem mentioned in the background art of not having a top temperature compensation function.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a temperature compensator for a fluidized bed dryer, comprising a drying chamber, a hot air fan disposed on the right side of the drying chamber, an air inlet duct fixedly connected to the right side of the drying chamber, a permeable grate fixedly connected laterally between the two sides inside the drying chamber, motor mounting bases welded to the top of the left and right sides of the drying chamber, two sets of servo motors mounted on the top of the motor mounting bases, screw support plates welded to the middle positions of the left and right sides of the drying chamber, two sets of ball screws vertically movably connected between the servo motors and the screw support plates, square windows fixedly connected to the interior of the left and right sides of the drying chamber, sliding grooves provided at the front and rear ends of the interior of the square windows, a movable plate disposed in the middle position of the interior of the square windows, a fixed sleeve fixedly connected to the middle position of the movable plate, multiple sets of metal plates disposed at the top and bottom of the movable plate, high-temperature resistant rubber sheets movably connected between each pair of metal plates, and a temperature compensation component for compensating the temperature at the top of the material disposed inside the drying chamber.

[0007] The temperature compensation component includes a temperature compensation tube, which is horizontally arranged inside the drying chamber. Multiple sets of nozzles are fixedly connected to the bottom end of the temperature compensation tube. An outer tube is fixedly connected to the right side of the temperature compensation tube. An inner tube is inserted into the bottom end of the outer tube from bottom to top. An air distribution port is welded to the top of the air inlet, and a constant air volume valve is installed at the top of the air distribution port.

[0008] As a further technical solution of this utility model, the top end of the constant air volume valve and the bottom end of the inner cylinder are fixedly connected, and the air inlet, air distribution port, constant air volume valve and the inner cylinder are internally connected.

[0009] As a further technical solution of this utility model, the outer diameter of the inner tube and the inner diameter of the outer tube are adapted to each other, and the outer tube can slide up and down along the outside of the inner tube.

[0010] As a further technical solution of this utility model, the outer tube and the temperature compensation tube are internally connected, and the nozzles are arranged at equal intervals.

[0011] As a further technical solution of this utility model, fixed sleeves are fixedly connected to both sides of the outside of the temperature compensation tube, and internal threaded tubes are fixedly connected to the front and rear ends of the fixed sleeves. The output end of the servo motor is connected to the top end of the ball screw. The external thread of the ball screw and the internal thread of the internal threaded tube are adapted to each other. The fixed sleeves are symmetrically distributed about the vertical center line of the temperature compensation tube.

[0012] As a further technical solution of this utility model, the inner diameter of the fixed sleeve is adapted to the outer diameter of the temperature compensation tube, and the temperature compensation tube and the fixed sleeve are fixedly connected.

[0013] As a further technical solution of this utility model, the shape and size of the front and rear ends of the movable plate are adapted to the shape and size of the inside of the sliding groove, and the movable plate can slide up and down along the inside of the square window.

[0014] As a further technical solution of this utility model, the shape and size of the front and rear ends of the metal plate are adapted to the shape and size of the inside of the sliding groove, the metal plate can slide up and down along the inside of the square window, and the high-temperature resistant rubber sheet is elastic.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the temperature compensator of the fluidized bed dryer not only realizes the function of top temperature compensation, but also realizes the function of easy adjustment of the height of the compensation tube, and also realizes the function of sealing at the lifting point;

[0016] Equipped with air distribution outlets, constant air volume valves, inner cylinder tubes, outer cylinder tubes, temperature compensation tubes, and nozzles, the material is evenly spread on the ventilation grate during use. Hot air blown by the hot air blower enters the interior of the drying chamber along the air inlet duct. Through the holes in the ventilation grate, the material to be dried on the grate is fluidized, causing it to boil evenly. During the fluidization and boiling process, heat exchange occurs. The material at the bottom absorbs heat and is dried first. When temperature compensation is required, the constant air volume valve is opened, and part of the hot air in the air inlet duct rises along the air distribution outlet, passes through the inner cylinder tube and outer cylinder tube, and reaches the temperature compensation tube. It is then sprayed downwards through the nozzles at the bottom of the temperature compensation tube to compensate the temperature of the material at the top, thus achieving the function of top temperature compensation.

[0017] The device is equipped with a motor mounting base, a servo motor, a ball screw, a fixed sleeve, an internal threaded tube, and a screw support plate. During use, the actual height of the temperature compensation tube can be adjusted according to the thickness of the material. The servo motor drives the ball screw to rotate continuously. The internal threaded tubes at the front and rear ends of the fixed sleeve cooperate with the ball screw to traction the temperature compensation tube, causing it to move up and down. The temperature compensation tube is higher when the material is thicker and lower when the material is thinner, thus realizing the function of easily adjusting the height of the compensation tube.

[0018] The device is equipped with a square window, a movable plate, a fixed sleeve, a metal plate, a high-temperature resistant rubber sheet, and a sliding groove. During use, when the temperature compensation tube moves up and down, the fixed sleeve inside the movable plate fits onto the outside of the temperature compensation tube and moves up and down synchronously with the temperature compensation tube. The sliding groove can limit its up and down sliding trajectory. The accordion-style shield composed of the metal plate and the high-temperature resistant rubber sheet can seal the empty area above and below the square window, preventing external cold air from entering the interior of the drying chamber, thus achieving the function of sealing the lifting point. Attached Figure Description

[0019] Figure 1 This is a frontal cross-sectional view of the present invention.

[0020] Figure 2 This is an enlarged front view cross-sectional schematic diagram of the inner tube and outer tube of this utility model;

[0021] Figure 3 This is a side enlarged structural schematic diagram of the fixed sleeve of this utility model;

[0022] Figure 4 This is a side view magnified structural diagram of the square window of this utility model.

[0023] Figure 5 This is a top view enlarged cross-sectional schematic diagram of the square window of this utility model.

[0024] Figure 6 This is a top-view enlarged structural diagram of the movable plate of this utility model.

[0025] Figure 7 This is a top-view enlarged structural diagram of the metal plate of this utility model.

[0026] Figure 8 This is a front-view enlarged structural diagram of the metal plate and high-temperature resistant rubber sheet of this utility model.

[0027] In the diagram: 1. Drying chamber; 2. Air inlet duct; 3. Hot air blower; 4. Air distributor; 5. Constant air volume valve; 6. Inner cylinder tube; 7. Outer tube; 8. Temperature compensation tube; 9. Nozzle; 10. Motor mounting base; 11. Servo motor; 12. Ball screw; 13. Fixed sleeve; 14. Internally threaded tube; 15. Screw support plate; 16. Square window; 17. Movable plate; 18. Fixed sleeve; 19. Metal plate; 20. High-temperature resistant rubber sheet; 21. Sliding groove; 22. Ventilation grate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example: Please refer to Figure 1-8 A temperature compensator for a fluidized bed dryer includes a drying chamber 1, a hot air blower 3 is provided on the right side of the drying chamber 1, an air inlet duct 2 is fixedly connected to the right side of the drying chamber 1, a ventilation grate 22 is horizontally fixedly connected between the two sides inside the drying chamber 1, and a temperature compensation component that can compensate for the temperature of the top of the material is provided inside the drying chamber 1.

[0030] Please see Figure 1-8 A temperature compensator for a fluidized bed dryer also includes a temperature compensation component. The temperature compensation component includes a temperature compensation pipe 8, which is horizontally arranged inside the drying chamber 1. Multiple sets of nozzles 9 are fixedly connected to the bottom end of the temperature compensation pipe 8. An outer sleeve 7 is fixedly connected to the right side of the temperature compensation pipe 8. An inner cylinder 6 is inserted from bottom to top at the bottom end of the outer sleeve 7. An air distribution port 4 is welded to the top of the air inlet duct 2. A constant air volume valve 5 is installed at the top of the air distribution port 4.

[0031] The top of the constant air volume valve 5 is fixedly connected to the bottom of the inner cylinder 6. The air inlet 2, the air distribution port 4, the constant air volume valve 5, and the inner cylinder 6 are connected internally. The outer diameter of the inner cylinder 6 is matched with the inner diameter of the outer sleeve 7. The outer sleeve 7 can slide up and down along the outside of the inner cylinder 6. The outer sleeve 7 and the temperature compensation pipe 8 are connected internally. The nozzles 9 are arranged at equal intervals and form temperature compensation through top heating.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, when the constant air volume valve 5 is opened, some of the hot air in the air inlet duct 2 rises along the air distribution port 4, passes through the inner cylinder 6 and the outer casing 7 to reach the temperature compensation pipe 8, and is sprayed downwards through the nozzle 9 at the bottom of the temperature compensation pipe 8 to compensate the temperature of the material at the top.

[0033] Motor mounting bases 10 are welded to the top of the left and right sides of the drying chamber 1. Two sets of servo motors 11 are installed on the top of the motor mounting bases 10. Screw support plates 15 are welded to the middle of the left and right sides of the drying chamber 1. Two sets of ball screws 12 are vertically and movably connected between the servo motors 11 and the screw support plates 15. Fixed sleeves 13 are fixedly connected to the two sides of the outside of the temperature compensation tube 8. Internal threaded tubes 14 are fixedly connected to the front and rear ends of the fixed sleeves 13. The output end of the servo motor 11 is connected to the top of the ball screw 12. The external thread of the ball screw 12 is compatible with the internal thread of the internal threaded tube 14. The fixed sleeves 13 are symmetrically distributed about the vertical center line of the temperature compensation tube 8, and the working height of the compensation tube can be adjusted.

[0034] Specifically, such as Figure 1 and Figure 3 As shown, the servo motor 11 drives the ball screw 12 to rotate continuously. The internal threaded tubes 14 at the front and rear ends of the fixed sleeve 13 cooperate with the ball screw 12 to form a traction on the temperature compensation tube 8, causing it to move up and down. When the material is thick, the temperature compensation tube 8 is at a higher position, and when the material is thin, the temperature compensation tube 8 is at a lower position.

[0035] Square windows 16 are fixedly connected to the interior of the left and right sides of the drying chamber 1. Sliding grooves 21 are opened at the front and rear ends of the interior of the square windows 16. A movable plate 17 is set in the middle of the interior of the square windows 16. A fixed sleeve 18 is fixedly connected in the middle of the movable plate 17. Multiple sets of metal plates 19 are set at the top and bottom of the movable plate 17. High-temperature resistant rubber sheets 20 are movably connected between each pair of metal plates 19. The inner diameter of the fixed sleeve 18 is adapted to the outer diameter of the temperature compensation pipe 8. The temperature compensation pipe 8 and the fixed sleeve 18 are fixedly connected. The shape and size of the front and rear ends of the movable plate 17 are adapted to the shape and size of the interior of the sliding groove 21. The movable plate 17 can slide up and down along the interior of the square windows 16. The shape and size of the front and rear ends of the metal plates 19 are adapted to the shape and size of the interior of the sliding groove 21. The metal plates 19 can slide up and down along the interior of the square windows 16. The high-temperature resistant rubber sheet 20 is elastic and maintains a seal during the lifting and lowering process.

[0036] Specifically, such as Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the fixed sleeve 18 inside the movable plate 17 fits onto the outside of the temperature compensation tube 8 and moves up and down synchronously with the temperature compensation tube 8. The sliding groove 21 can limit its up and down sliding trajectory. The accordion-style shield composed of the metal plate 19 and the high-temperature resistant rubber sheet 20 can close the empty area above and below the square window 16 to prevent external cold air from entering the interior of the drying chamber 1.

[0037] Working Principle: In use, the material is first evenly spread on the ventilation grate 22. Hot air blown by the hot air blower 3 enters the drying chamber 1 through the air inlet 2. The material to be dried on the grate is fluidized through the holes in the ventilation grate 22, causing it to boil evenly. Heat exchange occurs during the fluidization and boiling process. The material at the bottom absorbs heat and is dried first. When temperature compensation is needed, the constant air volume valve 5 is opened. Some of the hot air in the air inlet 2 rises along the air distribution port 4, passes through the inner cylinder 6 and the outer sleeve 7, and reaches the temperature compensation pipe 8. It is then sprayed downwards through the nozzle 9 at the bottom of the temperature compensation pipe 8 to compensate for the temperature of the material at the top. The actual height of the temperature compensation pipe 8 can be adjusted according to the thickness of the material. The servo motor 11 drives the ball screw 12 to rotate continuously. The internal threaded pipes 14 at the front and rear ends of the fixed sleeve 13 cooperate with the ball screw 12 to traction the temperature compensation pipe 8, causing it to move up and down. The temperature compensation pipe 8 is higher when the material is thicker and lower when the material is thinner. When the temperature compensation tube 8 moves up and down, the fixed sleeve 18 inside the movable plate 17 fits onto the outside of the temperature compensation tube 8 and moves up and down synchronously with the temperature compensation tube 8. The sliding groove 21 can limit its up and down sliding trajectory. The accordion-style shield composed of the metal plate 19 and the high-temperature resistant rubber sheet 20 can close the empty area above and below the square window 16 to prevent external cold air from entering the interior of the drying chamber 1.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A temperature compensator for a fluidized bed dryer, comprising a drying chamber (1), characterized in that: A hot air blower (3) is provided on the right side of the drying chamber (1). An air inlet duct (2) is fixedly connected to the right side of the drying chamber (1). A ventilation grate (22) is horizontally fixed between the two sides inside the drying chamber (1). Motor mounting bases (10) are welded to the top of the left and right sides of the drying chamber (1). Two sets of servo motors (11) are installed on the top of the motor mounting bases (10). Screw support plates (15) are welded to the middle of the left and right sides of the drying chamber (1). Two sets of ball screws (12) are vertically movably connected between the servo motors (11) and the screw support plates (15). The drying chamber (1) is fixedly connected to the interior of the left and right sides of the drying chamber (1). The front and rear ends of the interior of the square window (16) are respectively provided with sliding grooves (21). The middle position of the interior of the square window (16) is provided with a movable plate (17). The middle position of the movable plate (17) is fixedly connected with a fixed sleeve (18). The top and bottom of the movable plate (17) are respectively provided with multiple sets of metal plates (19). The metal plates (19) are movably connected to each other with high temperature resistant rubber sheets (20). The interior of the drying chamber (1) is provided with a temperature compensation component that can compensate for the temperature of the top of the material. The temperature compensation component includes a temperature compensation tube (8), which is horizontally arranged inside the drying chamber (1). Multiple sets of nozzles (9) are fixedly connected to the bottom end of the temperature compensation tube (8). An outer tube (7) is fixedly connected to the right side of the temperature compensation tube (8). An inner tube (6) is inserted from bottom to top at the bottom end of the outer tube (7). An air distribution port (4) is welded to the top end of the air inlet (2). A constant air volume valve (5) is installed at the top end of the air distribution port (4).

2. The temperature compensator for a fluidized bed dryer according to claim 1, characterized in that: The top end of the constant air volume valve (5) and the bottom end of the inner cylinder (6) are fixedly connected, and the air inlet (2), the air distribution port (4), the constant air volume valve (5), and the inner cylinder (6) are internally connected.

3. The temperature compensator for a fluidized bed dryer according to claim 1, characterized in that: The outer diameter of the inner tube (6) is matched with the inner diameter of the outer tube (7), and the outer tube (7) can slide up and down along the outside of the inner tube (6).

4. The temperature compensator for a fluidized bed dryer according to claim 1, characterized in that: The outer tube (7) and the temperature compensation tube (8) are internally connected, and the nozzles (9) are arranged at equal intervals.

5. The temperature compensator for a fluidized bed dryer according to claim 1, characterized in that: Fixed sleeves (13) are fixedly connected to both sides of the outside of the temperature compensation tube (8). Internal threaded tubes (14) are fixedly connected to the front and rear ends of the fixed sleeves (13). The output end of the servo motor (11) is connected to the top end of the ball screw (12). The external thread of the ball screw (12) and the internal thread of the internal threaded tube (14) are matched. The fixed sleeves (13) are symmetrically distributed about the vertical center line of the temperature compensation tube (8).

6. The temperature compensator for a fluidized bed dryer according to claim 1, characterized in that: The inner diameter of the fixed sleeve (18) is compatible with the outer diameter of the temperature compensation tube (8), and the temperature compensation tube (8) and the fixed sleeve (18) are fixedly connected.

7. The temperature compensator for a fluidized bed dryer according to claim 1, characterized in that: The shape and size of the front and rear ends of the movable plate (17) are adapted to the shape and size of the inside of the sliding groove (21), and the movable plate (17) can slide up and down along the inside of the square window (16).

8. The temperature compensator for a fluidized bed dryer according to claim 1, characterized in that: The shape and size of the front and rear ends of the metal plate (19) are adapted to the shape and size of the inside of the sliding groove (21). The metal plate (19) can slide up and down along the inside of the square window (16). The high-temperature resistant rubber sheet (20) is elastic.

Images