Vibrated fluidized bed
By introducing a distribution plate vibration, hot air drying, and ultrasonic anti-caking system into a vibrating fluidized bed, the problem of particle agglomeration during potassium chloride drying was solved, achieving efficient drying and stable operation.
Patent Information
- Application Number
- CN202520443215.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-13
AI Technical Summary
Existing vibrating fluidized beds are prone to agglomeration and clumping during the drying of potassium chloride due to interparticle liquid bridging forces, which affects operating efficiency and equipment performance.
A vibrating fluidized bed was designed, comprising a fluidized bed body, a vibration system, a hot air drying system, and an anti-caking system. The vibration of the distribution plate and the hot air drying are combined with ultrasonic transducers to prevent particle adhesion. A cyclone separator and a bag filter are used to purify the airflow and prevent agglomeration.
It effectively prevents potassium chloride granules from clumping during fluidization, improves drying efficiency, reduces downtime for cleaning, and enhances equipment operational stability and material drying effect.
Smart Images
Figure CN223869685U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of drying equipment technology, and more particularly to a vibrating fluidized bed. Background Technology
[0002] Potassium chloride, as an important chemical raw material, is widely used in fertilizers, pharmaceuticals, and other fields. Its production process often requires drying, sorting, and recycling of moist, agglomerated intermediate products or waste. Vibrating fluidized beds offer the advantages of both high fluidization heat transfer efficiency and vibration-assisted crushing.
[0003] A vibrating fluidized bed dryer, or simply vibrating fluidized bed, is a new type of high-efficiency fluidized bed drying equipment suitable for drying granular and powdery materials. It offers advantages such as ease of operation, energy saving, and environmental friendliness. Vibrating fluidized beds are a type of equipment that has gradually developed and expanded its application over the past decade, and is increasingly becoming a major type of drying equipment. A vibrating fluidized bed is a new type of drying device that applies a specific vibration source to a conventional fluidized bed dryer. This vibration source can be categorized according to its excitation method, including electric motor method, electromagnetic induction method, crankshaft or eccentric wheel method, pneumatic or hydraulic method, etc.
[0004] However, existing technologies still have the problem of particle agglomeration in practical applications: potassium chloride is highly hygroscopic (critical relative humidity is about 84%), and the condensation of surface moisture during fluidization causes liquid bridging forces between particles, leading to agglomeration and clumping. Utility Model Content
[0005] The main objective of this application is to provide a vibrating fluidized bed that can effectively reduce the problem of agglomeration and clumping caused by interparticle liquid bridging due to surface moisture condensation during the drying process of materials such as potassium chloride.
[0006] To solve the aforementioned technical problems, this application provides a vibrating fluidized bed, including a fluidized bed body, a vibration system, a hot air drying system, and an anti-caking system, wherein the hot air drying system is connected to the fluidized bed body;
[0007] The fluidized bed body includes a bed frame, a bed cover, and a distribution plate. The bed frame and bed cover are sealed chambers. One end of the sealed chamber is equipped with a feeding device, and the other end is equipped with a discharging device. The distribution plate is located inside the sealed chamber. The vibration system is connected to the distribution plate for transmission. The anti-caking system is installed on the distribution plate.
[0008] Optionally, in some embodiments of this utility model, the distribution plate is provided with a plurality of vent holes and a plurality of stepped guide protrusions at intervals, the inclination direction of the guide protrusions is consistent with the material movement direction, and the vent holes and guide protrusions are arranged alternately.
[0009] Optionally, in some embodiments of this utility model, the above-mentioned guide protrusion and the distribution plate are detachably connected by threads.
[0010] Optionally, in some embodiments of the present invention, the above-mentioned anti-caking system includes a plurality of ultrasonic transducers disposed on the side of the bed frame.
[0011] Optionally, in some embodiments of the present invention, the hot air drying system includes a blower, a heating device, a hot air conveying pipe and an air outlet pipe. One end of the hot air conveying pipe is connected to the bed frame and located below the distribution plate, and the other end of the hot air conveying pipe is connected to the heating device and the blower in sequence. The air outlet pipe is connected to the top of the bed cover.
[0012] Optionally, in some embodiments of the present invention, the hot air conveying pipeline is provided with a preliminary filtration device, which is connected in series between the blower and the heating equipment.
[0013] Optionally, in some embodiments of this utility model, a diversion pipe is provided at one end of the hot air conveying pipe that extends into the sealed cavity, and the air outlets of several diversion pipes are evenly distributed below the distribution plate.
[0014] Optionally, in some embodiments of the present invention, the hot air drying system further includes a cyclone separator and a bag filter, wherein the cyclone separator and the bag filter are connected in series in the air outlet duct.
[0015] Optionally, in some embodiments of the present invention, the heating device includes a heating wire.
[0016] Optionally, in some embodiments of the present invention, the vibration system includes two asymmetrically arranged vibration motors.
[0017] The beneficial effects that this application can achieve.
[0018] The present application provides a vibrating fluidized bed, which includes a fluidized bed body, a vibration system, a hot air drying system, and an anti-caking system. The hot air drying system is connected to the fluidized bed body. The fluidized bed body includes a bed frame, a bed cover, and a distribution plate. The bed frame and bed cover are sealed chambers. The distribution plate is located in the sealed chamber. The vibration system is connected to the distribution plate. The anti-caking system is disposed on the distribution plate.
[0019] The material to be processed, such as potassium chloride powder containing organic impurities, is first introduced into the fluidized bed body through a pipeline. The distribution plate is driven to vibrate by a vibration system, thereby driving the material on the distribution plate to move away from the pipeline and leave the fluidized bed body. As the material passes through the distribution plate, it can be dried by the vibration of the distribution plate itself and the hot air drying system. During this process, an anti-caking system can be installed on the inner wall of the bed frame to overcome the problem of potassium chloride adhering to the inner wall of the bed after absorbing moisture, which requires frequent shutdowns for cleaning. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of a vibrating fluidized bed provided in an embodiment of the present invention;
[0021] Figure 2 A schematic diagram of the distribution plate provided in an embodiment of this utility model.
[0022] Icons: 1. Fluidized bed body; 11. Bed frame; 12. Bed cover; 13. Distribution plate; 131. Ventilation hole; 132. Guide protrusion; 14. Sealed chamber; 15. Feeding equipment; 16. Discharge equipment; 2. Vibration system; 3. Hot air drying system; 31. Blower; 32. Heating equipment; 33. Hot air conveying pipeline; 34. Air outlet pipe; 35. Preliminary filtration device; 36. Diverter pipe; 37. Cyclone separator; 38. Bag filter; 4. Anti-caking system.
[0023] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0024] 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.
[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0028] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.
[0029] In order to achieve the above objectives,
[0030] Reference Figure 1 - Figure 2 The embodiments of this application provide a vibrating fluidized bed, including a fluidized bed body 1, a vibration system 2, a hot air drying system 3, and an anti-caking system 4. The hot air drying system 3 is connected to the fluidized bed body 1. The fluidized bed body 1 includes a bed frame 11, a bed cover 12, and a distribution plate 13. The bed frame 11 and the bed cover 12 are sealed chambers 14. The distribution plate 13 is located in the sealed chambers 14. The vibration system 2 is connected to the distribution plate 13. The anti-caking system 4 is disposed on the distribution plate 13.
[0031] The material to be processed, such as potassium chloride powder containing organic impurities, is first introduced into the fluidized bed body 1 through a pipe. The distribution plate 13 is driven to vibrate by the vibration system 2, thereby driving the material on the distribution plate 13 to move away from the pipe and leave the fluidized bed body 1. When the material passes through the distribution plate 13, the material is dried by the vibration of the distribution plate 13 itself and the hot air drying system 3. During this process, the anti-caking system 4 is set on the inner wall of the bed frame 11, which can overcome the problem of potassium chloride adhering to the inner wall of the bed after absorbing moisture and requiring frequent shutdown for cleaning.
[0032] The anti-caking system 4 includes several ultrasonic transducers located on the sides of the bed frame 11. The ultrasonic transducers are located in the sealed chamber 14 and on both sides of the distribution plate 13, which facilitates the crushing of agglomerated materials on the distribution plate 13. The ultrasonic transducers can use a frequency of 28kHz, a power density of 1.0W / cm², and run for 2 minutes every 30 minutes.
[0033] As an optional implementation, the distribution plate 13 of this embodiment is provided with a plurality of ventilation holes 131 and a plurality of stepped guide protrusions 132 at intervals. The inclination direction of the guide protrusions 132 is consistent with the material movement direction, and the ventilation holes 131 and guide protrusions 132 are arranged alternately.
[0034] By providing a number of vent holes 131 at intervals on the distribution plate 13, the vent holes 131, in conjunction with the hot air drying system 3, can evenly blow air upwards, thereby causing the material to enter a so-called vibratory fluidization state in conjunction with the vibration of the distribution plate 13. At this time, the material placed on the surface of the distribution plate 13 is strongly mixed, thereby efficiently inputting heat into the material, thus achieving the purpose of drying the material.
[0035] By providing a number of stepped guide protrusions 132 at intervals on the distribution plate 13, the distribution plate 13 can be driven to vibrate in conjunction with the vibration system 2, thereby driving the distribution plate 13 to move away from the feeding device 15.
[0036] Optionally, in this embodiment, the diameter of the vent 131 is 5 to 10 times the particle diameter, the protrusion height of the guide bump 132 is 5 to 10 mm, and the tilt angle is 5° to 10°; the vibration system includes two asymmetrically arranged vibration motors, and the distribution plate 13 is slightly tilted towards the discharge direction, with the tilt angle ranging from 5° to 15°.
[0037] Meanwhile, an additional discharge port can be set at the bottom of the sealed chamber 14 to collect the material falling into the bottom of the sealed chamber 14 and send it to the distribution plate 13 by manual labor or additional conveying equipment.
[0038] Optionally, in this embodiment, the flow guide protrusion 132 and the distribution plate 13 are detachably connected by threads, thereby adjusting the distribution and tilt angle of the flow guide protrusion 132 relative to the distribution plate 13, which is suitable for more application scenarios.
[0039] As an optional implementation, the hot air drying system 3 of this embodiment includes a blower 31, a heating device 32, a hot air conveying pipe 33 and an air outlet pipe 34. One end of the hot air conveying pipe 33 is connected to the bed frame 11 and is located below the distribution plate 13. The other end of the hot air conveying pipe is connected to the heating device 32 and the blower 31 in sequence. The air outlet pipe 34 is connected to the top of the bed cover 12.
[0040] The blower 31 and the heating device 32 work together to generate hot air, which is then delivered into the sealed chamber 14 through the hot air delivery pipe 33. The heating device 32 can use an electric heating wire, and the heating temperature is 120°C. An air outlet pipe 34 is provided to connect to the top of the bed cover 12 to facilitate air circulation within the sealed chamber 14.
[0041] It should be noted that the use of electric heating wire in the heating device 32 of this embodiment is only a preferred implementation of this embodiment. In other embodiments, water heating or radiant heating can also be used to achieve the heating effect.
[0042] Furthermore, the hot air conveying duct 33 of this embodiment is provided with a preliminary filtration device 35, which is connected in series between the blower 31 and the heating device 32. The preliminary filtration device 35 can be achieved by detachably connecting a cloth filter box in series with the hot air conveying duct 33, and is mainly used to filter impurities in the air drawn from the external environment by the blower 31.
[0043] Optionally, in this embodiment, a diversion pipe 36 is provided at one end of the hot air conveying pipe 33 that extends into the sealed chamber 14. The air outlets of several diversion pipes 36 are evenly distributed below the distribution plate 13, so that the hot air entering the sealed chamber 14 can be blown upward from the bottom of the distribution plate 13 evenly, thereby improving the drying efficiency.
[0044] Optionally, the hot air drying system 3 in this embodiment also includes a cyclone separator 37 and a bag filter 38, which are connected in series in the air outlet duct 34 to separate and recover dust particles during the drying process and purify the exhaust gas.
[0045] The cyclone separator 37 is a device used for separating gas-solid or liquid-solid systems. Its working principle relies on the rotational motion caused by the tangential introduction of airflow, which throws solid particles or liquid droplets with significant inertial centrifugal force towards the outer wall surface, separating them. The main features of the cyclone separator 37 are its simple structure, high operational flexibility, high efficiency, convenient management and maintenance, and low price. It is used to collect dust particles with a diameter of 5–10 μm or larger.
[0046] The bag filter 38 is a dry dust filtration device. It is suitable for collecting fine, dry, non-fibrous dust. The filter bags are made of woven filter cloth or non-woven felt, utilizing the filtration effect of the fibrous fabric to filter dust-laden gas. When the dust-laden gas enters the bag filter 38, large and heavy dust particles settle down due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter media, the dust is trapped, thus purifying the gas.
[0047] The airflow can be filtered by the cyclone separator 37 and the bag filter 38 to effectively remove impurities from its interior.
[0048] The specific working steps are as follows: First, start the blower 31 and heating equipment 32 to preheat the hot air. Then, start the vibration system 2 to make the distribution plate 13 vibrate. The material is evenly added into the fluidized bed, and the hot air enters the sealed chamber 14 through the hot air conveying pipe 33, ensuring full contact with the material and achieving fluidization and drying. The dried exhaust gas and fine dust are discharged through the exhaust pipe 34, purified by the cyclone separator 37 and bag filter 38 before being discharged. The dried material can then enter the discharge device 16 for subsequent processing steps. Simultaneously, vibration parameters, hot air temperature, and airflow can be adjusted as needed to optimize the drying effect.
[0049] The end of the distribution plate 13 away from the feeding device 15 is detachably equipped with a collection device for collecting the dried material. The collection device can be connected to subsequent processing equipment, so that the dried material in the sealed chamber 14 can be transported to the outside.
[0050] Both the feeding device 15 and the discharging device 16 can use a pipe structure with an internal one-way valve.
[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application.
Claims
1. A vibrating fluidized bed, characterized in that: It includes a fluidized bed body, a vibration system, a hot air drying system, and an anti-caking system, wherein the hot air drying system is connected to the fluidized bed body; The fluidized bed body includes a bed frame, a bed cover, and a distribution plate. The bed frame and the bed cover are sealed chambers. One end of the sealed chamber is provided with a feeding device, and the other end is provided with a discharging device. The distribution plate is located in the sealed chamber. The vibration system is drivenly connected to the distribution plate. The anti-caking system is installed on the distribution plate.
2. The vibrating fluidized bed according to claim 1, characterized in that: The distribution plate is provided with a number of ventilation holes and a number of stepped guide protrusions at intervals. The inclination direction of the guide protrusions is consistent with the material movement direction, and the ventilation holes and the guide protrusions are arranged alternately.
3. The vibrating fluidized bed according to claim 2, characterized in that: The flow guide bump and the distribution plate are detachably connected by threads.
4. The vibrating fluidized bed according to claim 1, characterized in that: The anti-caking system includes several ultrasonic transducers disposed on the sides of the bed frame.
5. The vibrating fluidized bed according to claim 1, characterized in that: The hot air drying system includes a blower, a heating device, a hot air delivery pipe, and an air outlet pipe. One end of the hot air delivery pipe is connected to the bed frame and located below the distribution plate. The other end of the hot air delivery pipe is connected to the heating device and the blower in sequence. The air outlet pipe is connected to the top of the bed cover.
6. The vibrating fluidized bed according to claim 5, characterized in that: The hot air delivery pipeline is equipped with a preliminary filtration device, which is connected in series between the blower and the heating equipment.
7. The vibrating fluidized bed according to claim 5, characterized in that: A diversion pipe is provided at one end of the hot air delivery pipe that extends into the sealed chamber, and the outlet ends of several diversion pipes are evenly distributed below the distribution plate.
8. The vibrating fluidized bed according to claim 5, characterized in that: The hot air drying system also includes a cyclone separator and a bag filter, which are connected in series in the air outlet duct.
9. The vibrating fluidized bed according to claim 5, characterized in that: The heating device includes a heating wire.
10. The vibrating fluidized bed according to claim 1, characterized in that: The vibration system includes two asymmetrically arranged vibration motors.