A granular material drying and cooling structure

Abstract

This invention discloses a drying and cooling structure for particulate materials, relating to the field of particulate material drying and cooling technology. Installed on a vibrating fluidized bed dryer, it includes a fixed support frame, a movable actuator, a sampling and detection component, and a multi-functional actuator. The sampling and detection component is located inside the vibrating fluidized bed dryer and is used for sampling and online analysis of the material. The multi-functional actuator includes a triangular tilting frame for selectively executing cleaning, material equalization, or sampling and detection modes. The advantages are: it integrates cleaning, material equalization, and sampling and detection modes; the three modes share the same support and drive mechanism, resulting in a compact structure and saving installation space. It achieves online anti-clogging cleaning, uniform material distribution, and real-time moisture content detection and closed-loop control of the vibrating fluidized bed dryer, effectively solving the problems of traditional equipment requiring shutdown for cleaning, uneven material distribution, and detection lag leading to fluctuations in drying quality, thus improving the continuous operation capability of the equipment and the consistency of product quality.

Description

Technical Field

[0001] This invention relates to the field of particulate material drying and cooling technology, and in particular to a particulate material drying and cooling structure. Background Technology

[0002] Vibrating fluidized bed dryers are widely used equipment in the field of drying and cooling particulate materials. The principle is to use a vibrating motor to drive the material to jump forward on the bed surface, while hot or cold air passes through the material layer for drying and cooling. This type of equipment has advantages such as high thermal efficiency, minimal material damage, and large processing capacity, and has been widely used in the chemical, pharmaceutical, food, and feed industries.

[0003] Currently, vibrating fluidized bed systems have numerous tiny air holes in the vibrating bed layer (i.e., the air distribution plate) to evenly distribute airflow to the material layer. However, during the drying process, fine particles easily adhere to and clog these air holes, leading to uneven airflow distribution and localized "dead bed" phenomena, severely impacting drying efficiency and product uniformity. Traditional solutions require manual cleaning after shutdown, which is not only time-consuming and labor-intensive but also causes production interruptions, affecting capacity.

[0004] Secondly, after the material enters the bed from the feed end, due to differences in feeding method, material characteristics, or vibration parameters, local accumulation or "deviation" can easily occur, resulting in uneven distribution of the material on the bed. In some areas, the material layer is too thick, making it difficult for hot air to penetrate and resulting in insufficient drying; in other areas, the material layer is too thin, causing the material to overheat prematurely and even deteriorate.

[0005] Furthermore, during the drying process, the moisture content of the material is a core indicator for determining product quality. Operators typically take manual samples from the discharge port at regular intervals and send them to the laboratory for testing using an oven method or a rapid moisture analyzer. The time from sampling to obtaining test results often takes several minutes or even tens of minutes, during which the equipment continues to run continuously. If the moisture content is found to be excessive, hundreds or even thousands of kilograms of substandard products have already been produced. Moreover, this "post-processing sampling" method cannot achieve real-time control of the drying process, resulting in significant material waste and energy consumption.

[0006] Therefore, in order to improve the drying effect and control the drying process in real time, this invention provides a drying and cooling structure for particulate materials. Summary of the Invention

[0007] The purpose of this invention is to solve the problems existing in the prior art by proposing a drying and cooling structure for particulate materials.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a particulate material drying and cooling structure, installed on a vibrating fluidized bed dryer, the vibrating fluidized bed dryer having a vibrating bed layer for conveying and drying particulate materials, the particulate material drying and cooling structure including: a fixed support frame, specifically including a pair of stationary supports symmetrically arranged front and rear, fixedly installed on the fixed part of the vibrating fluidized bed dryer.

[0009] Multiple movable actuators, specifically H-shaped rigid frames, are slidably mounted on the fixed support frame, with the two vertical arms of the movable actuators movably extending into the interior of the vibrating fluidized bed dryer.

[0010] The sampling and testing device is installed at the lower end of the active actuator and located inside the vibrating fluidized bed dryer for sampling and online testing of materials.

[0011] A multi-functional actuator is mounted on the active actuator and the sampling and detection device. The multi-functional actuator includes a triangular flipping frame for selectively performing cleaning, homogenizing, or sampling and detection modes.

[0012] The first side of the triangular flipping frame is provided with a material guide groove, the second side is detachably equipped with a brush plate for cleaning the vibrating bed, and the third side is detachably equipped with a material distribution plate for evenly spreading the material.

[0013] In the above-mentioned particulate material drying and cooling structure, the sampling and detection component includes a rotating bushing rotatably connected to the lower ends of two vertical arms of the movable actuator that are close to each other, and a sample chamber whose two ends are fixedly connected to the corresponding rotating bushings.

[0014] In the above-mentioned particulate material drying and cooling structure, the sample chamber is a horizontal cylindrical shape, with a detection port and a feed inlet at the top, an inclined guide surface that converges towards the center at the bottom, and a discharge port at the bottom.

[0015] In the above-mentioned particulate material drying and cooling structure, an arc-shaped sealing cover is slidably covered on the outer circumferential surface of the sample chamber, which is used to selectively close or expose the detection port and the feed inlet.

[0016] In the above-mentioned particulate material drying and cooling structure, the multi-functional actuator also includes a floating connecting ring sleeved on the outer periphery of the rotating bushing by multiple elastic damping elements, and the front and rear ends of the triangular tilting frame are respectively fixedly connected to the corresponding floating connecting rings.

[0017] In the above-mentioned particulate material drying and cooling structure, the triangular flipping frame is a prism frame structure with a triangular cross-section, and is coaxially wrapped around the outside of the sample chamber; the guide trough corresponds to the feed inlet.

[0018] In the above-mentioned particulate material drying and cooling structure, the longitudinal section of the uniform material plate is wedge-shaped, with the side away from the sample chamber being a flat surface and the side closer to the sample chamber being a downwardly sloping guide slope, which is located directly below the discharge port.

[0019] In the above-mentioned particulate material drying and cooling structure, a material drop gap is formed between the end of the guide slope and the side wall of the triangular tilting frame, and multiple staggered spindle-shaped protrusions are provided on both the guide slope and the flat surface of the material distribution plate.

[0020] In the above-mentioned particulate material drying and cooling structure, a hinge shaft is movably inserted at the edge where the second and third sides of the triangular tilting frame intersect, and the hinge shaft is fixedly connected to the inner wall of the vibrating fluidized bed dryer; a detection probe and two jet nozzles are movably installed at the edge where the first and second sides of the triangular tilting frame intersect.

[0021] In the above-mentioned particulate material drying and cooling structure, multiple movable actuators, sampling and detection components, and multifunctional actuators are arranged at intervals in the middle and rear part of the vibrating bed along the material conveying direction of the vibrating fluidized bed dryer.

[0022] Compared with existing technologies, the advantages of this invention are: it integrates cleaning mode, material distribution mode, and sampling and detection mode. The three modes share the same support and drive mechanism, resulting in a compact structure and saving installation space. Furthermore, it achieves online anti-clogging cleaning, uniform material distribution, and real-time moisture content detection and closed-loop control of the vibrating fluidized bed dryer, effectively solving the problems of traditional equipment requiring shutdown for cleaning, uneven material distribution, and detection lag leading to fluctuations in drying quality. This improves the continuous operation capability of the equipment and the consistency of product quality.

[0023] 1. In cleaning mode, the triangular tilting frame flips so that the brush cleaning component faces the vibrating bed, which can remove small particles that clog the vibrating bed online. This solves the problem of frequent machine shutdowns for cleaning due to bed surface blockage in traditional vibrating beds, and prevents uneven airflow caused by blockage from affecting the drying effect.

[0024] 2. In the material distribution mode, the spindle-shaped protrusions at the bottom of the material distribution plate can evenly disperse the material to both sides, eliminate local accumulation, ensure the uniform distribution of the material on the bed surface, and ensure uniform drying in the subsequent process.

[0025] 3. In sampling and testing mode, by arranging multiple sampling and testing devices and corresponding multi-functional actuators at intervals along the material conveying direction, online moisture content data of materials at different drying stages can be acquired simultaneously. Based on the test results, timely feedback adjustment and predictive control can be performed, transforming the traditional post-event sampling inspection that relies on manual experience into automated online real-time control. This effectively avoids a large number of non-conforming products caused by control lag, and significantly improves the consistency and stability of product quality. Attached Figure Description

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 A schematic diagram of a vibrating fluidized bed dryer and its fixed support frame;

[0028] Figure 2 This is a partial structural diagram of the vibrating bed, fixed support frame, movable actuator, and multifunctional actuator.

[0029] Figure 3 A partial structural diagram of the active actuator and multifunctional actuator;

[0030] Figure 4 This is a partial structural exploded view of the sampling and testing component;

[0031] Figure 5 This is a partial structural cross-sectional view of a multi-functional actuator;

[0032] Figure 6 for Figure 3 Another structural diagram from another perspective;

[0033] Figure 7 This is a schematic diagram of the material guide trough.

[0034] Figure 8 This is a schematic diagram of the structure under the uniform material distribution mode;

[0035] Figure 9 A schematic diagram of the structure in the detection preparation state under detection mode;

[0036] Figure 10 This is a structural diagram of the feeding detection state under detection mode;

[0037] Figure 11 This is a schematic diagram of the structure in the cleaning mode.

[0038] In the diagram: 100, Vibrating bed; 1, Fixed support frame; 2, Movable actuator; 3, Sampling and testing component; 31, Rotating bushing; 32, Sample chamber; 321, Detection port; 322, Feed inlet; 323, Discharge outlet; 33, Arc-shaped sealing cover; 4, Multifunctional actuator; 41, Elastic damping element; 42, Floating connecting ring; 43, Triangular tilting frame; 431, Guide trough; 432, Brush cleaning component; 433, Equalizing plate; 434, Material drop gap; 44, Hinge shaft; 45, Detection probe; 46, Air nozzle. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Reference Figures 1 to 4 A particulate material drying and cooling structure is installed on a vibrating fluidized bed dryer. The vibrating fluidized bed dryer has a vibrating bed 100 for conveying and drying particulate materials. The particulate material drying and cooling structure includes a fixed support frame 1, a movable actuator 2, a sampling and detection element 3, and a multi-functional actuator 4.

[0041] Vibrating fluidized bed dryers are existing, mature equipment used for processing granular materials. They utilize a vibrating motor to drive the material forward in a hopping motion, and hot and cold air are used to dry and cool the material layer. The section near the feed inlet of the vibrating fluidized bed dryer is the drying section, which is circulated with hot air, and the wet material is fed in through the feed inlet (the left end of the diagram in this case is the feed inlet). The section near the discharge outlet is the cooling section, which is circulated with cold air, and the dried and cooled finished product is discharged through the discharge outlet (the right end of the diagram in this case is the discharge outlet). Currently, the vibrating bed layer 100 (i.e., the air distribution plate) of the vibrating fluidized bed has numerous small air holes to evenly distribute the airflow to the material layer.

[0042] The fixed support frame 1 specifically includes a pair of stationary supports arranged symmetrically front and rear, which are fixedly installed on the fixed part of the vibrating fluidized bed dryer and have no rigid contact with the vibrating body of the vibrating fluidized bed dryer, thereby avoiding the impact of equipment vibration on the support structure.

[0043] The movable actuator 2 is an H-shaped rigid frame, and multiple such frames are configured to be slidably mounted on the fixed support frame 1. The two vertical arms of the movable actuator 2 are movably inserted into the interior of the vibrating fluidized bed dryer. Specifically, the upper ends of the two vertical arms of the movable actuator 2 are connected to sliding seats. The upper part of the fixed support frame 1 has an arc-shaped slide rail, and the sliding seats are slidably connected to the arc-shaped slide rail via an electric slider, thus allowing them to move along an arc-shaped trajectory.

[0044] It should be noted that the top of the vibrating fluidized bed dryer is provided with a slot for the vertical arm to move, and a multi-layer flexible sealing structure is provided at the slot. The preferred method is a combination of rubber sealing curtain and brush seal, which allows the relative movement of the vertical arm while effectively preventing the leakage of internal dust.

[0045] The sampling and testing component 3 is installed at the lower end of the movable actuator 2 and located inside the vibrating fluidized bed dryer, and is used to sample and analyze materials online.

[0046] The multi-functional actuator 4 is mounted on the movable actuator 2 and the sampling and detection device 3. The multi-functional actuator 4 includes a triangular flipping frame 43 for selectively performing cleaning, equalization or sampling and detection modes.

[0047] Multiple active actuators 2, sampling and detection components 3, and multifunctional actuators 4 are arranged at intervals along the material conveying direction of the vibrating fluidized bed dryer. Preferably, one set is arranged at each of the ends of the drying section, the middle section of the cooling section, and the end of the cooling section for process monitoring, closed-loop control, and finished product acceptance. Through multi-point arrangement, the moisture content change trend of the material during the drying process can be monitored in real time, realizing feedforward control.

[0048] Reference Figures 3 to 5 The sampling and detection component 3 includes rotating bushings 31 rotatably connected to the lower ends of two vertical arms of the movable actuator 2, and sample chambers 32 whose two ends are fixedly connected to the corresponding rotating bushings 31. The sample chambers 32 are horizontal cylindrical. The top of the sample chambers 32 has a detection port 321 and a feed inlet 322, its inner bottom wall is an inclined guide surface that converges towards the center, and the bottom has a discharge port 323.

[0049] An arc-shaped sealing cover 33 slides over the outer circumferential surface of the sample chamber 32, used to selectively close or expose the detection port 321 and the feed port 322. The arc-shaped sealing cover 33 is driven by an electric slider to slide circumferentially outside the sample chamber 32, thereby switching between the sealing state, the detection preparation state, and the feed detection state in sequence.

[0050] It should be noted that the bearing at the rotating connection between the rotating bushing 31 and the vertical arm of the movable actuator 2 is a dustproof bearing, and the sliding contact surface between the arc-shaped sealing cover 33 and the sample chamber 32 is made of wear-resistant material.

[0051] Reference Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The triangular flipping frame 43 is a prism frame structure with a triangular cross-section. A guide groove 431 is provided on its first side, a brush cleaning component 432 for cleaning the vibrating bed 100 is detachably and fixedly installed on its second side, and a material spreading plate 433 for evenly spreading materials is detachably and movably installed on its third side.

[0052] The multi-functional actuator 4 also includes a floating connecting ring 42 that is sleeved on the outer periphery of the rotating bushing 31 by multiple elastic damping elements 41, and the front and rear ends of the triangular flipping frame 43 are respectively fixedly connected to the corresponding floating connecting ring 42.

[0053] It should be noted that the elastic damping element 41 is preferably a high-temperature resistant compression spring. When the triangular tilting frame 43 contacts the vibrating bed 100, the elastic damping element 41 can absorb vibration energy. The material of the brush cleaning component 432 should be a high-temperature resistant, wear-resistant material that does not damage the surface of the vibrating bed 100, preferably high-temperature resistant polyurethane.

[0054] The triangular tilting frame 43 is coaxially wrapped around the outside of the sample chamber 32. The guide chute 431 corresponds to the feed inlet 322, ensuring that the material can smoothly enter the feed inlet 322 from the guide chute 431 in the detection mode.

[0055] On the third side, a material leveling plate 433 is slidably connected via an electric slider. The longitudinal section of the material leveling plate 433 is wedge-shaped, with the side away from the sample chamber 32 being a flat surface and the side closer to the sample chamber 32 being a downwardly sloping guide slope. This guide slope is located directly below the discharge port 323, facilitating the material discharged from the discharge port 323 to slide onto the material leveling plate 433.

[0056] A material drop gap 434 is formed between the end of the guide slope and the side wall of the triangular tilting frame 43. Multiple staggered spindle-shaped protrusions are provided on both the guide slope and the flat surface of the material distribution plate 433. When the material distribution plate 433 extends downwards, the spindle-shaped protrusions contact the material on the vibrating bed 100, dispersing the material evenly and achieving uniform material distribution.

[0057] A hinge shaft 44 is movably inserted through the edge where the second and third sides of the triangular tilting frame 43 intersect. The hinge shaft 44 is installed on the inner wall of the vibrating fluidized bed dryer. The hinge shaft 44 provides a pivot point for the triangular tilting frame 43, which can rotate around the shaft to achieve the switching of working modes.

[0058] It should be noted that the arc-shaped slide rail is an arc-shaped track with the hinge axis 44 as the rotation center, which makes it easy for the subsequent drive triangular tilting frame 43 to rotate smoothly around this axis.

[0059] A detection probe 45 and two nozzles 46 are movably mounted on the edge where the first and second sides of the triangular tilting frame 43 meet via an electric push rod. During detection, the output end of the electric push rod extends downward, causing the detection probe 45 and nozzles 46 to move downward synchronously.

[0060] It is important to note that the detection probe 45 is preferably a high-temperature resistant moisture detection probe, whose operating temperature range should cover the actual operating temperature of the equipment (60℃ to 140℃), used to detect the moisture content of the material in the sample chamber 32. The detection probe 45 and its connecting cable should be designed to resist vibration to prevent poor contact or wire breakage due to vibration. The nozzle 46 is connected to an external compressed air source and is used to spray high-pressure gas into the sample chamber 32 before detection to remove residual dust and debris, ensuring detection accuracy. The nozzle 46 should be set to a timed pulse spray mode, automatically spraying once before each detection to remove residual material and dust in the sample chamber 32.

[0061] The three working modes of the particulate material drying and cooling structure are as follows: 1. Material homogenization mode (e.g., material homogenization mode) Figure 8 (As shown): When it is necessary to uniformly distribute the material, the sliding seat slides along the arc-shaped slide rail on the fixed support frame 1, driving the movable execution frame 2 to slide along the arc-shaped slide rail. This causes the triangular flipping frame 43 to flip around the hinge axis 44 until its third side faces the vibrating bed 100. The material distribution plate 433 extends downward, so that its bottom spindle-shaped protrusion contacts the material on the vibrating bed 100. The spindle-shaped protrusion evenly disperses the material to both sides, eliminating local accumulation of material on the bed surface and ensuring the uniformity of the subsequent drying process.

[0062] II. Sampling and Detection Modes (e.g.) Figure 8 , Figure 9 and Figure 10 (As shown): When it is necessary to test the moisture content of the material, the triangular tilting frame 43 tilts to face the third side of the vibrating bed 100. At this time, the material leveling plate 433 retracts upward, so that the spindle-shaped protrusion at its bottom is flush with the bottom edge of the triangular tilting frame 43.

[0063] Subsequently, the arc-shaped sealing cover 33 is driven to slide intermittently, sequentially achieving the following states: initial sealing state (such as...) Figure 8 The arc-shaped sealing cap 33 covers the detection port 321 and the feed inlet 322. Detection preparation status (e.g.) Figure 9 The arc-shaped sealing cover 33 slides, releasing the cover on the detection port 321. At this time, the feed port 322 is still covered, while the discharge port 323 is not covered. The output end of the electric push rod extends downward, driving the detection probe 45 and the jet nozzle 46 to move downward synchronously. The jet nozzle 46 sprays high-pressure gas into the sample chamber 32 through the detection port 321, clearing the residue in the chamber. The residue is discharged from the discharge port 323. Feed detection status (e.g.) Figure 10The arc-shaped sealing cover 33 continues to slide, removing the cover from the detection port 321 and the feed inlet 322. At this time, the discharge port 323 is covered. The movable actuator 2 slides along the arc-shaped slide rail via the sliding seat, causing the triangular tilting frame 43 to tilt. The bottom edge of the first side of the triangular tilting frame 43 contacts the vibrating bed 100, blocking the moving material for a short time (specifically 4 to 8 seconds), and then resets after blocking. During blocking, the material gradually accumulates and moves upward along the first side of the triangular tilting frame 43, and enters the sample chamber 32 through the guide chute 431 and the feed inlet 322. After the material enters the sample chamber 32, the output end of the electric push rod continues to extend downward, driving the detection probe 45 and the air nozzle 46 to move downward synchronously. The detection probe 45 contacts the material to detect the moisture content of the material in the chamber.

[0064] After the test is completed, the arc-shaped sealing cover 33 is reset, and the material in the sample chamber 32 is discharged through the discharge port 323, slides down along the guide slope of the uniform material plate 433, and is evenly distributed back to the vibrating bed 100 through the material drop gap 434.

[0065] It should be noted that the aforementioned blocking action may cause momentary material stagnation upstream of the sampling point. However, the "block-detect-reset" cycle is precisely controlled within tens of seconds (10 to 15 seconds), and throughout the entire long drying line, this disturbance is limited to the vicinity of the blocking point and will not spread to the entire bed. Furthermore, after resetting, the material can be quickly re-distributed, thus not affecting the overall fluidization uniformity.

[0066] Based on the process requirements of particulate materials, the system pre-sets the target moisture content and its allowable deviation range. When the detection probe 45 measures the moisture content of the material in the sample chamber 32, the PLC control system compares it with the preset standard and makes one of the following three basic judgments: **Qualified:** The measured moisture content is within the target value ± allowable deviation range (e.g., target value 5%, allowable deviation ±0.5%, then 4.5% to 5.5% is the qualified range). In this case, the system maintains the current process parameters unchanged and only records the detection data for quality traceability. **Slightly Wet (Under-dried):** The measured moisture content is higher than the upper limit of the target value (e.g., greater than 5.5%). In this case, the material is determined to be insufficiently dried, and the system automatically starts the drying adjustment program to enhance drying capacity. **Slightly Dry (Over-dry):** The measured moisture content is lower than the lower limit of the target value (e.g., less than 4.5%). In this case, the material is determined to be over-dried, and the system automatically starts the drying reduction adjustment program to reduce drying intensity. In addition, when the measured moisture content significantly exceeds the process warning line (e.g., greater than 7% or less than 3%), the system will issue an audible and visual alarm while automatically adjusting, prompting operators to promptly check whether the equipment status or material characteristics have become abnormal.

[0067] When the deviation is small (e.g., less than 0.5% from the target value), the system prioritizes fine-tuning by adjusting the inlet air temperature. When the deviation is moderate (0.5% to 1.0%), the system combines inlet air temperature adjustment and feed rate adjustment. When the deviation is large (more than 1.0%), the system implements multi-parameter linkage adjustment (simultaneously adjusting temperature, feed rate, and air volume) and issues an alarm to prompt the operator to pay attention.

[0068] After adjustment, the system waits for a period of time (about two to ten minutes) before triggering sampling and testing again to verify the adjustment effect.

[0069] If the result of the retest still does not meet the acceptable range, the system repeats the above judgment and adjustment steps until the moisture content returns to acceptable levels. If multiple adjustments are ineffective, the system issues a fault alarm, prompting the operator to intervene and check the equipment status. This transforms traditional post-inspection relying on manual experience into automated online real-time control, effectively avoiding large batches of non-conforming products due to control lag, and significantly improving the consistency and stability of product quality.

[0070] III. Cleaning Modes (e.g.) Figure 11 (As shown): When cleaning of the vibrating bed 100 is required, the sliding seat slides along the arc-shaped slide rail on the fixed support frame 1, causing the movable actuator 2 to slide along the arc-shaped slide rail. This causes the triangular flipping frame 43 to flip around the hinge axis 44 until its second side faces the vibrating bed 100, thus bringing the brush cleaning component 432 into contact with the vibrating bed 100. The vibration of the vibrating bed 100 itself generates relative motion with the brush cleaning component 432, thereby removing fine particles clogging the vibrating bed 100. This solves the problem of frequent shutdowns for cleaning due to bed surface clogging in traditional vibrating fluidized beds, effectively extending the continuous operating time of the equipment, reducing maintenance costs, and preventing uneven airflow caused by clogging, which could affect the drying effect.

[0071] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0072] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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 invention according to the specific circumstances.

[0074] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A granular material drying and cooling structure, installed on a vibrating fluidized bed dryer, the vibrating fluidized bed dryer having a vibrating bed layer for conveying and drying granular materials, characterized in that, The particulate material drying and cooling structure includes: The fixed support frame specifically includes a pair of stationary supports arranged symmetrically front and rear, which are fixedly installed on the fixed part of the vibrating fluidized bed dryer; Multiple movable actuators, specifically H-shaped rigid frames, are slidably mounted on the fixed support frame, and the two vertical arms of the movable actuators are movably inserted into the interior of the vibrating fluidized bed dryer; The sampling and testing device is installed at the lower end of the movable actuator and located inside the vibrating fluidized bed dryer for sampling and online testing of materials; A multi-functional actuator is mounted on the movable actuator and the sampling and detection device. The multi-functional actuator includes a triangular flipping frame for selectively performing cleaning, homogenizing, or sampling and detection modes. The first side of the triangular flipping frame is provided with a material guide groove, the second side is detachably equipped with a brush plate for cleaning the vibrating bed, and the third side is detachably equipped with a material distribution plate for evenly spreading the material.

2. The particulate material drying and cooling structure according to claim 1, characterized in that, The sampling and detection device includes a rotating bushing rotatably connected to the lower ends of two vertical arms of the movable actuator, which are close to each other, and a sample chamber whose two ends are fixedly connected to the corresponding rotating bushings.

3. The particulate material drying and cooling structure according to claim 2, characterized in that, The sample chamber is a horizontal cylindrical shape. The top of the sample chamber has a detection port and a feed inlet. The inner bottom wall of the sample chamber is an inclined guide surface that converges towards the center. The bottom of the sample chamber has a discharge port.

4. The particulate material drying and cooling structure according to claim 3, characterized in that, The outer circumferential surface of the sample chamber is covered by an arc-shaped sealing cap, which is used to selectively close or expose the detection port and the feed inlet.

5. The particulate material drying and cooling structure according to claim 2, characterized in that, The multifunctional actuator also includes a floating connecting ring fitted around the outer periphery of the rotating bushing by multiple elastic damping elements, and the front and rear ends of the triangular tilting frame are respectively fixedly connected to the corresponding floating connecting rings.

6. The particulate material drying and cooling structure according to claim 3, characterized in that, The triangular flipping frame is a prism frame structure with a triangular cross-section, and it is coaxially wrapped around the outside of the sample chamber; the guide trough and the feed inlet are positioned accordingly.

7. The particulate material drying and cooling structure according to claim 3, characterized in that, The longitudinal section of the uniform material plate is wedge-shaped. The side of the uniform material plate away from the sample chamber is a flat surface, and the side of the uniform material plate closer to the sample chamber is a downwardly sloping guide slope, which is located directly below the discharge port.

8. The particulate material drying and cooling structure according to claim 7, characterized in that, A material drop gap is formed between the end of the guide slope and the side wall of the triangular tilting frame, and multiple staggered spindle-shaped protrusions are provided on both the guide slope and the flat surface of the material leveling plate.

9. The particulate material drying and cooling structure according to claim 1, characterized in that, The triangular tilting frame is movably fitted with a hinge shaft at the edge where its second and third sides meet, and the hinge shaft is fixedly connected to the inner wall of the vibrating fluidized bed dryer; a detection probe and two jet nozzles are movably installed on the edge where its first and second sides meet.

10. The particulate material drying and cooling structure according to claim 1, characterized in that, Multiple active actuators, sampling and detection components, and multifunctional actuators are arranged at intervals in the middle and rear part of the vibrating bed along the material conveying direction of the vibrating fluidized bed dryer.

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