Energy-saving fluidized bed device

Abstract

The invention provides an energy-saving boiling bed device which comprises a support, a vibration bed with an opening in the upper end is arranged at the upper end of the support, a vibration motor is mounted on the side wall of the vibration bed, a boiling bed with an opening in the lower end is connected to the upper end of the vibration bed, a mesh interlayer is arranged at the lower end of the boiling bed, and a first high-pressure air pump and an air heater are arranged outside the vibration bed. The outlet end of the first high-pressure air pump is communicated with the inlet end of the air heater, the outlet end of the air heater is communicated with the interior of the vibration bed, and the upper end of the boiling bed is communicated with an exhaust pipe; the device further comprises a dehumidification cylinder, the interior of the dehumidification cylinder is divided into an absorption area, a heating area and a cooling area, a rotating cylinder arranged in the length direction of the dehumidification cylinder is rotationally connected into the dehumidification cylinder, a driving motor used for driving the rotating cylinder to rotate is installed at one end of the dehumidification cylinder, and a plurality of strip-shaped molecular sieves distributed in the circumferential direction are arranged on the outer side of the rotating cylinder. Hot air is dehumidified and then subjected to internal recycling, dust can be effectively prevented from entering air, and energy consumption can be effectively reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of material drying and relates to an energy-saving fluidized bed device. Background Art

[0002] Material drying is a crucial step in many industrial production processes. Efficient and uniform drying of granular or powdered materials, in particular, directly impacts product quality and production efficiency. Traditional drying methods, such as chamber drying and drum drying, are increasingly limiting in modern industrial applications due to their slow drying rates, high energy consumption, and uneven drying. To overcome these challenges, a new and efficient drying technology, the fluidized bed drying process, has emerged.

[0003] A fluidized bed dryer is a drying device designed based on the principle of fluidization. By blowing heated air or other gaseous media at a moderate velocity through the material contained in the bed, the material exhibits a state similar to that of a liquid, resulting in a rapid and uniform drying process. This technology not only significantly improves drying efficiency but also ensures excellent dispersion and fluidity of the material during the drying process, making it particularly suitable for processing fine-grained and easily agglomerated materials. Furthermore, fluidized bed dryers offer a range of advantages, including ease of operation, a high degree of automation, and continuous production capabilities. Consequently, they are widely used in a variety of industries, including pharmaceuticals, food, and chemicals.

[0004] However, despite the significant success of fluidized bed drying in improving drying efficiency, its operation also faces certain challenges. For example, the hot air exhausted from the fluidized bed typically contains a large amount of dust, which not only poses a pollution risk to the environment but also requires the installation of a multi-stage filtration and purification system to treat this exhaust gas in order to meet environmental emission standards. This process not only increases equipment investment costs but also requires the installation of complex filtration equipment and maintenance measures. More importantly, because the hot air is directly exhausted, the large amount of heat contained therein is not effectively recovered and utilized, resulting in high overall energy consumption and hindering the achievement of energy conservation and emission reduction goals. Summary of the Invention

[0005] The purpose of the present invention is to provide an energy-saving fluidized bed device that dehumidifies hot air and then circulates it internally, which can effectively prevent dust from entering the air and continuously recycle heat energy, effectively reducing energy consumption.

[0006] To solve the above technical problems, the present invention provides an energy-saving fluidized bed device, comprising a bracket, a vibrating bed with an upper end open is provided at the upper end of the bracket, a vibrating motor is installed on the side wall of the vibrating bed, the upper end of the vibrating bed is connected to the fluidized bed with an lower end open, a feeding port is provided at one end of the fluidized bed, a discharge port is provided on the lower side of the other end of the fluidized bed, a mesh partition covering the open end of the vibrating bed is provided at the lower end of the fluidized bed, a first high-pressure air pump and an air heater are provided outside the vibrating bed, the outlet end of the first high-pressure air pump is connected to the inlet end of the air heater, the outlet end of the air heater is connected to the interior of the vibrating bed, and the upper end of the fluidized bed is connected to an exhaust pipe;

[0007] The dehumidifier further includes a dehumidifier cylinder, which is divided into an absorption zone, a heating zone and a cooling zone. A rotating drum arranged along the length direction is rotatably connected to the dehumidifier cylinder. A driving motor for driving the rotating drum is installed at one end of the dehumidifier cylinder. A plurality of strip-shaped molecular sieves are arranged on the outside of the rotating drum in a circular distribution and along the length direction. The free edge of each strip-shaped molecular sieve extends to the inner wall of the dehumidifier cylinder. The free end of the exhaust pipe is connected to one end of the absorption zone, and the other end of the absorption zone is connected to the inlet end of the first high-pressure air pump through a reflux pipe. The dehumidifier cylinder has an opening on the side wall at the heating zone and is connected to a heating cover. Dehumidification ports are provided on both sides of the heating cover, and an electric heating pipe is provided in the heating cover.

[0008] By adopting the above technical solution, the material is gradually added to the mesh interlayer from the feeding port, the vibration motor is operated to vibrate the vibrating bed and the boiling bed, so that the material moves toward the discharge port, the first high-pressure air pump is operated to quickly heat the air through the air heater, and then enters the vibrating bed, blowing the material on the mesh interlayer upward, making the material boil, quickly taking away the moisture on the material, and then the material is gradually discharged from the discharge port;

[0009] After the hot air in the boiling bed passes through the inclined dust shield to block the dust removal, it goes into the absorption zone of the dehumidification drum along the exhaust pipe. The humid hot air flows through the strip molecular sieve in the absorption zone, and the water is absorbed by the strip molecular sieve to become dry hot air. Then it enters the first high-pressure air pump through the reflux pipe. Since the air at this time is also hot air, it does not require much energy to heat it to the required temperature. The driving motor drives the rotation to rotate the fully absorbed strip molecular sieve to rotate into the heating zone. The strip molecular sieve is heated at high temperature by the electric heating tube to quickly dissipate the water on the strip molecular sieve. Finally, the strip molecular sieve rotates to the cooling zone. The operation of the second high-pressure air pump can make the outside cold air flow into the cooling zone, take away the heat of the strip molecular sieve, and realize the rapid cooling and regeneration of the strip molecular sieve. The regenerated strip molecular sieve can enter the absorption zone again to play a dehumidification role.

[0010] The present invention is further configured such that a second high-pressure air pump is provided outside the vibrating bed, the vibrating bed is divided into a hot air zone and a cold air zone by a vertical partition, the outlet end of the air heater is connected to the hot air zone of the vibrating bed, and the outlet end of the second high-pressure air pump is connected to the cold air zone of the vibrating bed.

[0011] The present invention is further configured such that the dehumidification cylinder is provided with an air inlet connected to one end of the cooling zone, and the other end of the cooling zone is connected to the inlet end of the second high-pressure air pump through an air inlet pipe.

[0012] The present invention is further configured such that three partition chambers are provided at both ends of the dehumidification cylinder, which are connected to the absorption zone, the heating zone and the cooling zone respectively, and each strip molecular sieve is arranged between the partition chambers at both ends, and the exhaust pipe, the return pipe, the air inlet and the air inlet pipe are all connected to the partition chambers at the corresponding positions.

[0013] The present invention is further configured such that the side wall of the vibrating bed is connected to the outside with multiple hot air outlets and cold air outlets, the outlet end of the air heater is connected to a hot air main pipe, the hot air main pipe is connected to multiple hot air branch pipes corresponding one-to-one to the hot air outlets, each hot air outlet is connected to the corresponding hot air branch pipe through a silicone hose, the outlet end of the second high-pressure air pump is connected to a cold air pipe, the cold air outlet is connected to most cold air pipes through a silicone hose, the upper end of the boiling bed is connected to the outside with multiple exhaust ports, the exhaust pipe is connected to multiple exhaust branch pipes corresponding one-to-one to the exhaust ports, and each exhaust port is connected to the corresponding exhaust branch pipe through a silicone hose.

[0014] The present invention is further configured such that a plurality of inclined dust shields are provided on the top of the fluidized bed, each inclined toward one end, and a gap is left between the upper edge of each inclined dust shield and the inner top of the fluidized bed.

[0015] The present invention is further configured such that the bracket is provided with supports on both sides of the vibration bed, and connecting seats corresponding to the supports are provided on both sides of the vibration bed, and a vibration spring is provided between each support and the corresponding connecting seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] First, the present invention dehumidifies the air and then circulates it internally, so that there is no need to exhaust the air to the outside during the boiling drying process, and there is no need to filter the gas. This not only eliminates the need for multi-stage filtering equipment, but also prevents dust from being discharged into the air, which reduces the investment in equipment costs and is more environmentally friendly.

[0018] Secondly, the present invention performs an internal circulation process after dehumidifying the hot air, which can continuously recycle the thermal energy in the hot air. Only the heat of the heated materials and the irreversible heat conduction loss in the pipeline are lost. Most of the thermal energy can be fully utilized, and the air can be heated to the required temperature with only low energy consumption, which can effectively reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 Used to demonstrate the connection between the vibrating bed and the fluidized bed;

[0021] Figure 3 Used to show the internal structure of the vibration bed;

[0022] Figure 4 It is a partial cross-sectional view used to show the internal structure of the fluidized bed;

[0023] Figure 5 It is a partial cross-sectional view used to show the internal structure of the dehumidification cylinder.

[0024] Among them, 1. bracket; 2. vibrating bed; 3. vertical partition; 4. hot air zone; 5. cold air zone; 6. hot air outlet; 7. cold air outlet; 8. vibrating motor; 9. support; 10. connecting seat; 11. vibrating spring; 12. boiling bed; 13. feeding port; 14. discharging port; 15. mesh partition; 16. inclined dust shield; 17. exhaust port; 18. first high-pressure air pump; 19. air heater; 20. hot air main pipe; 21. hot air branch pipe; 22. silicone hose; 23. second high-pressure air pump; 24. cold air pipe; 25. exhaust pipe; 26. exhaust branch pipe; 27. dehumidification cylinder; 28. partition chamber; 29. rotating drum; 30. driving motor; 31. strip molecular sieve; 32. reflux pipe; 33. heating cover; 34. dehumidification port; 35. electric heating pipe; 36. air inlet; 37. air inlet pipe. DETAILED DESCRIPTION

[0025] The following is a detailed description of an energy-saving fluidized bed apparatus according to the present invention, with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention. Identical or similar reference numerals in the drawings represent identical or similar components.

[0026] Example, see Figure 1-5An energy-saving fluidized bed device includes a bracket 1, a vibrating bed 2 with an upper end opening is provided at the upper end of the bracket 1, the vibrating bed 2 is divided into a hot air zone 4 and a cold air zone 5 by a vertical partition 3, the side wall of the vibrating bed 2 is provided with three hot air outlets 6 connected to the hot air zone 4 and a cold air outlet 7 connected to the cold air zone 5, a vibrating motor 8 is installed on the side wall of the vibrating bed 2, the bracket 1 is provided with two supports 9 on both sides of the vibrating bed 2, and two connecting seats 10 corresponding to the supports 9 are provided on both sides of the vibrating bed 2, and two vibration springs 11 are provided between each support 9 and the corresponding connecting seat 10. When the vibration motor 8 is working, it can drive the vibrating bed 2 to vibrate.

[0027] The upper end of the vibrating bed 2 is connected to a boiling bed 12 with an open lower end. A feeding port 13 is provided at one end of the boiling bed 12, and a discharge port 14 is provided on the lower side of the other end of the boiling bed 12. The lower end of the boiling bed 12 is provided with a mesh partition 15 covering the open end of the vibrating bed 2. The material vibrates and boils on the mesh partition 15. The top of the boiling bed 12 is provided with a plurality of inclined dust shields 16, all of which are inclined to one end. There is a gap between the upper edge of each inclined dust shield 16 and the inner top of the boiling bed 12. Through the obstruction of the inclined dust shield 16, particles and dust are not easy to pass upward, but are blocked and fall downward again, reducing the dust from rising with the hot air. The upper end of the boiling bed 12 is connected to the outside with four exhaust ports 17.

[0028] A first high-pressure air pump 18 and an air heater 19 are installed outside the vibrating bed 2. The outlet of the air heater 19 is connected to a hot air main pipe 20, which is connected to four hot air branch pipes 21 corresponding to the hot air outlets 6. Each hot air outlet 6 is connected to a corresponding hot air branch pipe 21 via a silicone hose 22. The outlet of the first high-pressure air pump 18 is connected to the inlet of the air heater 19, and the outlet of the air heater 19 is connected to the interior of the vibrating bed 2. A second high-pressure air pump 23 is installed outside the vibrating bed 2. The outlet of the second high-pressure air pump 23 is connected to a cold air pipe 24. The cold air outlet 7 is connected to multiple cold air pipes 24 via a silicone hose 22. The upper end of the fluidized bed 12 is connected to an exhaust pipe 25, which is connected to four exhaust branch pipes 26 corresponding to the exhaust ports 17. Each exhaust port 17 is connected to the corresponding exhaust branch pipe 26 through a silicone hose 22. The silicone hose 22 allows the vibrating bed 2 and the fluidized bed 12 to remain connected to the pipe during vibration.

[0029] It also includes a dehumidification cylinder 27, which is divided into an absorption zone, a heating zone and a cooling zone. Three separation chambers 28 are provided at both ends of the dehumidification cylinder 27, which are connected to the absorption zone, the heating zone and the cooling zone respectively. A rotating cylinder 29 arranged along its length is rotatably connected inside the dehumidification cylinder 27. A driving motor 30 for driving the rotating cylinder 29 is installed at one end of the dehumidification cylinder 27. A plurality of strip molecular sieves 31 are provided on the outside of the rotating cylinder 29, which are distributed circumferentially and arranged along its length. Each strip molecular sieve 31 is provided between the separation chambers 28 at both ends. The free edge of each strip molecular sieve 31 extends to the inner wall of the dehumidification cylinder 27 to prevent the air in the absorption zone, the heating zone and the cooling zone from mixing through the gap.

[0030] The free end of the exhaust pipe 25 communicates with a partition chamber 28 at one end of the absorption zone. The partition chamber 28 at the other end of the absorption zone is connected to the inlet of the first high-pressure air pump 18 via a return pipe 32. This allows the moist hot air to pass through the strip molecular sieve 31 in the absorption zone in an extended direction, absorbing moisture. The dehumidification cylinder 27 has an opening on the sidewall of the heating zone and is connected to a heating hood 33. A dehumidification port 34 is provided on each side of the heating hood 33. Three electric heating tubes 35 are installed within the heating hood 33. These heating tubes 35 heat the strip molecular sieve 31 in the heating zone to rapidly dissipate moisture. The dehumidification cylinder 27 is provided with an air inlet 36 connected to the partition chamber 28 at one end of the cooling zone. The partition chamber 28 at the other end of the cooling zone is connected to the inlet end of the second high-pressure air pump 23 through an air inlet pipe 37. When the second high-pressure air pump 23 is working, it can allow cold air from the outside to flow into the cooling zone, taking away the heat of the strip molecular sieve 31, thereby realizing rapid cooling and regeneration of the strip molecular sieve 31.

[0031] Working principle: The material is gradually added to the mesh interlayer 15 from the feeding port 13. The vibration motor 8 works to vibrate the vibrating bed 2 and the fluidized bed 12, so that the material moves toward the discharge port 14. The first high-pressure air pump 18 works to quickly heat the air through the air heater 19, and then enters the vibrating bed 2, blowing upward the material on the mesh interlayer 15, making the material boil and quickly removing moisture from the material. The second high-pressure air pump 23 allows cold air to enter the vibrating bed 2, blowing upward the material on the mesh interlayer 15 to dissipate heat from the material, and then the material is gradually discharged from the discharge port 14.

[0032] After the hot air in the fluidized bed 12 passes through the inclined dust shield 16 to block the dust removal, it enters the absorption zone of the dehumidification drum 29 along the exhaust pipe 25. The humid hot air flows through the strip molecular sieve 31 in the absorption zone, and the moisture is absorbed by the strip molecular sieve 31 to become dry hot air. Then, it enters the first high-pressure air pump 18 through the return pipe 32. Since the air at this time is also hot air, it does not require much energy to heat it to the required temperature. The drive motor 30 drives the rotation to rotate, so that the strip molecular sieve 31 after absorption is rotated into the heating zone. The strip molecular sieve 31 is heated at a high temperature by the electric heating tube 35, so that the moisture on the strip molecular sieve 31 is quickly dissipated. Finally, the strip molecular sieve 31 is rotated to the cooling zone. The second high-pressure air pump 23 can work to allow the outside cold air to flow into the cooling zone, take away the heat of the strip molecular sieve 31, and realize the rapid cooling and regeneration of the strip molecular sieve 31. The regenerated strip molecular sieve 31 can enter the absorption zone again to play a dehumidification role.

[0033] It should also be noted that all references to "disposed" and similar descriptors in this application (especially in this specification) express that two structures have or exist in a connection relationship. However, the specific means by which the two structures are connected are not particularly limited, and are generally conventional connection means. In other words, such means should be understood as existing in the art and do not require further elaboration. For example, "n is disposed on m" simply expresses that structure n is present on structure m, while the two are specifically connected by welding, riveting, adhesive bonding, or integral molding, all of which are within the scope of protection of this application. Another example is "y is rotatably disposed on x" simply expresses that y and x are rotatable relative to each other, while whether the two are connected by a bearing, y directly passes through x and is rotatably connected to x, or other feasible methods are all within the scope of protection of this application.

[0034] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An energy-saving fluidized bed device, comprising a bracket (1), characterized in that: The upper end of the bracket (1) is provided with a vibration bed (2) with an upper end open, a vibration motor (8) is installed on the side wall of the vibration bed (2), the upper end of the vibration bed (2) is connected to a boiling bed (12) with a lower end open, one end of the boiling bed (12) is provided with a feeding port (13), the lower side of the other end of the boiling bed (12) is provided with a discharge port (14), the lower end of the boiling bed (12) is provided with a mesh partition (15) covering the open end of the vibration bed (2), a first high-pressure air pump (18) and an air heater (19) are provided outside the vibration bed (2), the outlet end of the first high-pressure air pump (18) is connected to the inlet end of the air heater (19), the outlet end of the air heater (19) is connected to the interior of the vibration bed (2), and the upper end of the boiling bed (12) is connected to an exhaust pipe (25); The dehumidification cylinder (27) is further provided with a dehumidification cylinder (27), wherein the dehumidification cylinder (27) is divided into an absorption zone, a heating zone and a cooling zone. A rotating cylinder (29) arranged along the length direction thereof is rotatably connected to the dehumidification cylinder (27). A driving motor (30) for driving the rotating cylinder (29) to rotate is installed at one end of the dehumidification cylinder (27). A plurality of strip-shaped molecular sieves (31) are arranged on the outside of the rotating cylinder (29) and are distributed in a circumferential manner and arranged along the length direction thereof. The free edge of each strip-shaped molecular sieve (31) extends to the inner wall of the dehumidification cylinder (27). The free end of the exhaust pipe (25) is connected to one end of the absorption zone, and the other end of the absorption zone is connected to the inlet end of the first high-pressure air pump (18) through a return pipe (32). The side wall of the dehumidification cylinder (27) is opened at the heating zone and is connected to a heating cover (33). Dehumidification ports (34) are provided on both sides of the heating cover (33). An electric heating pipe (35) is provided in the heating cover (33).

2. The energy-saving fluidized bed device according to claim 1, characterized in that: A second high-pressure air pump (23) is provided outside the vibrating bed (2), and the inside of the vibrating bed (2) is divided into a hot air zone (4) and a cold air zone (5) by a vertical partition (3). The outlet end of the air heater (19) is connected to the hot air zone (4) of the vibrating bed (2), and the outlet end of the second high-pressure air pump (23) is connected to the cold air zone (5) of the vibrating bed (2).

3. The energy-saving fluidized bed device according to claim 2, characterized in that: The dehumidification cylinder (27) is provided with an air inlet (36) at one end of the cooling zone, and the other end of the cooling zone is connected to the inlet end of the second high-pressure air pump (23) through an air inlet pipe (37).

4. The energy-saving fluidized bed device according to claim 2, characterized in that: Three partition chambers (28) are provided at both ends of the dehumidification cylinder (27), which are connected to the absorption zone, the heating zone and the cooling zone respectively. Each strip molecular sieve (31) is provided between the partition chambers (28) at both ends. The exhaust pipe (25), the return pipe (32), the air inlet (36) and the air inlet pipe (37) are all connected to the partition chambers (28) at corresponding positions.

5. The energy-saving fluidized bed device according to claim 2, characterized in that: The side wall of the vibrating bed (2) is connected to a plurality of hot air outlets (6) and cold air outlets (7) outwardly, the outlet end of the air heater (19) is connected to a hot air main pipe (20), the hot air main pipe (20) is connected to a plurality of hot air branch pipes (21) corresponding to the hot air outlets (6), each hot air outlet (6) is connected to the corresponding hot air branch pipe (21) through a silicone hose (22), the outlet end of the second high-pressure air pump (23) is connected to a cold air pipe (24), the cold air outlet (7) is connected to most cold air pipes (24) through a silicone hose (22), the upper end of the boiling bed (12) is connected to a plurality of exhaust ports (17) outwardly, the exhaust pipe (25) is connected to a plurality of exhaust branch pipes (26) corresponding to the exhaust ports (17), each exhaust port (17) is connected to the corresponding exhaust branch pipe (26) through a silicone hose (22).

6. The energy-saving fluidized bed device according to claim 1, characterized in that: The top of the fluidized bed (12) is provided with a plurality of inclined dust shields (16) which are all inclined toward one end, and a gap is left between the upper edge of each inclined dust shield (16) and the inner top of the fluidized bed (12).

7. The energy-saving fluidized bed device according to claim 1, characterized in that: The bracket (1) is provided with supports (9) on both sides of the vibration bed (2), and connecting seats (10) corresponding to the supports (9) are provided on both sides of the vibration bed (2), and a vibration spring (11) is provided between each support (9) and the corresponding connecting seat (10).

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