Fluidized bed dryer

Abstract

The utility model discloses a fluidized bed dryer, which relates to the technical field of drying and comprises a fixed shell, a first conveying mechanism, a drying cavity, a feeding hopper, a scattering mechanism, an air inlet hole, a heater, a first air exhauster, a blocking cover, a second air exhauster, a filter screen, a second conveying mechanism, a rotating shaft, throwing teeth and a first motor. According to the utility model, the structure is reasonable and simple, the motor drives the transmission shaft and the scattering teeth to operate when materials enter the initial stage of a drying process, so that the materials which are low in stacking specific gravity, high in viscosity and easy to cake can be scattered and enter a subsequent drying link in a loose state, the dead bed or channeling phenomenon is effectively avoided, and the drying efficiency is improved. The contact effect of materials and process gas is improved; the first conveying mechanism and the second conveying mechanism are consistent in structure, the motor drives the driving roller, the driven roller and the conveying belt to operate, materials are stably conveyed to pass through all areas of the drying cavity, stable operation of the conveying belt is guaranteed through the supporting seat, and continuity of the material drying process is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying technical field, especially relate to a fluidized bed dryer. BACKGROUND

[0002] In chemical industry, environmental protection building material, feed and many other industries, drying process is a very key link in material processing flow. Fluidized bed dryer has been widely used in these industries with its advantages of high efficiency and continuous operation, and can dry various powder, granular and sheet materials.

[0003] However, when facing the material with small stacking specific gravity, large viscosity and easy to gather into block, the traditional fluidized bed dryer exposes obvious defects. In the process of drying this kind of material, it is easy to cause fluidized bed dead bed or channeling phenomenon. Once dead bed occurs, the material will be accumulated at the bottom of the bed, cannot fully contact with the process gas coming from the air chamber and move irregularly, so that heat transfer and mass transfer are blocked; Channeling phenomenon leads to the formation of short circuit channel of process gas in the bed, most of the gas is directly discharged without effective utilization, and the material cannot be uniformly heated and dried in the fluidized state, which seriously affects the drying effect and cannot meet the requirements of production process on the drying degree of material.

[0004] Although the prior art has been continuously improved, such as the fluidized bed dryer disclosed in the Chinese utility model patent with patent No. CN 213020551 U, which solves some problems to a certain extent, but there is still a large space for improvement in drying effect, and it is difficult to fully meet the needs of industrial production for efficient and high-quality drying material. Under this background, it has important practical significance to develop a fluidized bed dryer with reasonable and simple structure, low production cost, easy installation and complete functions, which can effectively solve the above material drying problems and significantly improve the drying effect. UTILITY MODEL CONTENTS

[0005] The utility model discloses a fluidized bed dryer, which solves the problem of the traditional fluidized bed dryer in processing the material with small stacking specific gravity, large viscosity and easy to gather into block, which is prone to dead bed or channeling phenomenon, resulting in that the material cannot fully contact with the process gas, heat and mass transfer are blocked, and the drying effect is poor, which cannot meet the requirements of production process on the drying degree of material.

[0006] To solve the above problems, the utility model provides a technical scheme: a fluidized bed dryer, including fixed casing, conveying mechanism no. 1, drying chamber, feeding hopper, scattering mechanism, air inlet, heater, air extractor no. 1, baffle cover, air extractor no. 2, filter screen, conveying mechanism no. 2, pivot, throwing tooth and motor no. 1, the fixed casing inside is equipped with drying chamber, the drying chamber left upper side opening is equipped with feeding hopper, the drying chamber left lower side is equipped with horizontal conveying mechanism no. 1, the drying chamber left upper side is equipped with scattering mechanism, the air inlet is set up in drying chamber left upper side, the heater fixedly connected in drying chamber central left side, the baffle cover fixedly connected in drying chamber right upper side, the baffle cover upper side central inside fixedly connected with filter screen, the air extractor no. 1 fixedly connected in fixed casing upper side central opening, the air extractor no. 2 fixedly connected in fixed casing right upper side opening, the air extractor no. 2 lower side opening is linked with filter screen upper side, the conveying mechanism no. 2 is inclined and is equipped in drying chamber right lower side, the motor no. 1 fixedly connected in fixed casing rear side outside, the pivot swing joint in drying chamber central right lower side, the pivot rear side center is fixedly connected with motor no. 1 output shaft, and the pivot outside is uniformly fixedly connected with several throwing teeth.

[0007] As preferred, the specific structure of the scattering mechanism includes a cover body, scattering teeth, a transmission shaft, and a motor two; the cover body is fixedly connected to the left side of the drying chamber; the transmission shaft is located inside the cover body; the transmission shaft is swingingly connected to the left side of the drying chamber; the transmission shaft is fixedly connected to the output shaft of the motor two at the center of the rear side thereof; and the motor two is fixedly connected to the rear side of the fixed casing.

[0008] As preferred, the motor two is a servo motor or a stepping motor.

[0009] As preferred, the conveying mechanism two is identical in structure to the conveying mechanism one; the specific structure of the conveying mechanism one includes a motor three, a driving roller, a conveying belt, a support seat, and a driven roller; the driving roller is swingingly connected to the left side below the drying chamber; the driving roller is fixedly connected to the output shaft of the motor three at the center of the rear side thereof; and the motor three is fixedly connected to the outside of the fixed casing; the driven roller is swingingly connected to the right side below the drying chamber; the driven roller is connected to the driving roller through the conveying belt; the support seat is fixedly connected to the bottom of the drying chamber; and the top surface of the support seat is connected to the inner top surface of the conveying belt.

[0010] As preferred, the motor three is a servo motor or a stepping motor.

[0011] As preferred, the motor one is a servo motor or a stepping motor.

[0012] The utility model has the advantages of:

[0013] (1)The utility model discloses a structure is reasonable simple, production cost is low, and the characteristics of convenient installation, set up the mechanism of beating, in the initial stage of material entering drying process, motor drives transmission shaft and beats the tooth operation, can beat the material of the small specific gravity of accumulation, the material of the viscosity of relatively big and easy caking, make it in loose state enter subsequent drying link, effectively avoid dead bed or ditch flow phenomenon, promote the contact effect of material and process gas.

[0014] (2)The utility model discloses a conveying mechanism one and conveying mechanism two structure are identical, and motor drives driving roller, driven roller and conveying belt operation, and the material is stably conveyed through drying cavity each area, and support base guarantees the stable operation of conveying belt, and the continuity of material drying process is ensured.

[0015] (3)The utility model discloses a heater and air extractor one cooperation, and the heater heats the material, and air extractor one extracts humid air and forms flowing air, accelerates material drying process, improves drying efficiency.

[0016] (4)The utility model discloses a material reaches the pivot position, and motor drives pivot and throws the tooth and throws up the material, and air extractor two passes through the baffle and filter screen and extracts drying cavity right upper side air, further exhausts humid air and reduces material temperature, and all -round improves material drying effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in connection with the drawings and examples.

[0018] Figure 1 It is the structural schematic diagram of the utility model.

[0019] Figure 2 It is the structural schematic diagram of the mechanism of beating.

[0020] Figure 3 It is the structural schematic diagram of conveying mechanism.

[0021] 1-fixed casing;2-conveying mechanism one;3-drying cavity;4-feeding hopper;5-beating mechanism;6-air inlet;7-heater;8-air extractor one;9-baffle;10-air extractor two;11-filter screen;12-conveying mechanism two;13-pivot;14-throwing tooth;15-motor one;51-shield body;52-beating tooth;53-transmission shaft;54-motor two;21-motor three;22-driving roller;23-conveying belt;24-support base;25-driven roller. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be clearly and completely described below through specific embodiments.

[0023] Example 1

[0024] AsFigure 1 As shown, this specific embodiment adopts the following technical solution: A fluidized bed dryer includes a fixed shell 1, a conveying mechanism 2, a drying chamber 3, a feeding hopper 4, a dispersing mechanism 5, an air inlet 6, a heater 7, a vacuum pump 8, a baffle 9, a vacuum pump 2 10, a filter screen 11, a conveying mechanism 2 12, a rotating shaft 13, a spraying tooth 14, and a motor 15; the fixed shell 1 is provided with a drying chamber 3 inside; the upper left opening of the drying chamber 3 is provided with a feeding hopper 4, the lower left side of the drying chamber 3 is provided with a transverse conveying mechanism 2, and the upper left side of the drying chamber 3 is provided with a dispersing mechanism 5; the air inlet 6 is opened on the upper left side of the drying chamber 3; the heater 7 is fixedly connected to the left side of the center of the drying chamber 3; The baffle 9 is fixedly connected to the upper right side of the drying chamber 3, and a filter screen 11 is fixedly connected to the center of the upper side of the baffle 9; the first vacuum pump 8 is fixedly connected to the central opening of the upper side of the fixed housing 1; the second vacuum pump 10 is fixedly connected to the opening of the upper right side of the fixed housing 1, and the lower opening of the second vacuum pump 10 is connected to the upper side of the filter screen 11; the second conveying mechanism 12 is inclined and located on the lower right side of the drying chamber 3; the first motor 15 is fixedly connected to the outer rear side of the fixed housing 1; the rotating shaft 13 is movably connected to the lower right center of the drying chamber 3, and the rear center of the rotating shaft 13 is fixedly connected to the output shaft of the first motor 15, and several spraying teeth 14 are evenly fixedly connected to the outer side of the rotating shaft 13.

[0025] Example 2

[0026] like Figure 1 As shown, this specific embodiment adopts the following technical solution: A fluidized bed dryer includes a fixed shell 1, a conveying mechanism 2, a drying chamber 3, a feeding hopper 4, a dispersing mechanism 5, an air inlet 6, a heater 7, a vacuum pump 8, a baffle 9, a vacuum pump 2 10, a filter screen 11, a conveying mechanism 2 12, a rotating shaft 13, a spraying tooth 14, and a motor 15; the fixed shell 1 is provided with a drying chamber 3 inside; the upper left opening of the drying chamber 3 is provided with a feeding hopper 4, the lower left side of the drying chamber 3 is provided with a transverse conveying mechanism 2, and the upper left side of the drying chamber 3 is provided with a dispersing mechanism 5; the air inlet 6 is opened on the upper left side of the drying chamber 3; the heater 7 is fixedly connected to the left side of the center of the drying chamber 3; The baffle 9 is fixedly connected to the upper right side of the drying chamber 3, and a filter screen 11 is fixedly connected to the center of the upper side of the baffle 9; the first vacuum pump 8 is fixedly connected to the central opening of the upper side of the fixed housing 1; the second vacuum pump 10 is fixedly connected to the opening of the upper right side of the fixed housing 1, and the lower opening of the second vacuum pump 10 is connected to the upper side of the filter screen 11; the second conveying mechanism 12 is inclined and located on the lower right side of the drying chamber 3; the first motor 15 is fixedly connected to the outer rear side of the fixed housing 1; the rotating shaft 13 is movably connected to the lower right center of the drying chamber 3, and the rear center of the rotating shaft 13 is fixedly connected to the output shaft of the first motor 15, and several spraying teeth 14 are evenly fixedly connected to the outer side of the rotating shaft 13.

[0027] like Figure 2 As shown, the specific structure of the dispersing mechanism 5 includes a cover 51, dispersing teeth 52, a transmission shaft 53, and a second motor 54; the cover 51 is fixedly connected to the left side of the drying chamber 3; the transmission shaft 53 is located inside the cover 51 and is movably connected to the left side of the drying chamber 3; the rear center of the transmission shaft 53 is fixedly connected to the output shaft of the second motor 54, and the second motor 54 is fixedly connected to the rear outside of the fixed housing 1.

[0028] The second motor 54 is a servo motor or a stepper motor, which makes it easy to control the second motor 54 using existing automation technology.

[0029] like Figure 3 As shown, the conveying mechanism 2 12 has the same structure as the conveying mechanism 1 2. The specific structure of the conveying mechanism 1 2 includes a motor 3 21, a drive roller 22, a conveyor belt 23, a support base 24, and a driven roller 25. The drive roller 22 is movably connected to the lower left side of the drying chamber 3. The rear center of the drive roller 22 is fixedly connected to the output shaft of the motor 3 21, and the motor 3 21 is fixedly connected to the outside of the fixed housing 1. The driven roller 25 is movably connected to the lower right side of the drying chamber 3. The driven roller 25 is connected to the drive roller 22 through the conveyor belt 23. The support base 24 is fixedly connected to the lower part of the drying chamber 3, and the top surface of the support base 24 is connected to the inner top surface of the conveyor belt 23.

[0030] Among them, motor 3 21 is a servo motor or a stepper motor, so that motor 3 21 can be controlled by existing automation technology; motor 15 is a servo motor or a stepper motor, so that motor 15 can be controlled by existing automation technology.

[0031] The usage state of this utility model is as follows: This utility model has a reasonable and simple structure, low production cost, convenient installation, and complete functions. In use, firstly, motor 2 (54) is turned on. Motor 2 (54) drives the transmission shaft 53 to rotate inside the cover 51, thereby causing the dispersing teeth 52 fixed on the transmission shaft 53 to start operating. Then, the material to be dried is added to the drying chamber 3 through the feeding hopper 4, and then the material falls onto the conveyor belt 23. Next, motor 3 (21) of the conveying mechanism 2 is turned on. Motor 3 (21) drives the active roller 22 to rotate. The active roller 22 drives the driven roller 25 to rotate through the conveyor belt 23. The operation of the conveyor belt 23 transports the material to the right. When the material passes through the dispersing mechanism 5, it can be dispersed by the dispersing teeth 52, allowing the material to enter below the heater 7 in a relatively loose state. Then, the heater 7 and the vacuum pump 8 are turned on. Here, the heater 7 can heat the material being conveyed, and the vacuum pump 8 is turned on simultaneously. The vacuum pump 8... The fixed housing 1 has a central opening on its upper side that draws in humid air from the drying chamber 3, creating airflow to further improve drying efficiency. When the heated and dried material falls onto the rotating shaft 13, motor 15 is turned on. Motor 15 drives the rotating shaft 13 to rotate in the lower right corner of the center of the drying chamber 3. The evenly fixed throwing teeth 14 on the outside of the rotating shaft 13 rotate accordingly, throwing the material above upwards. At the same time, the vacuum pump 2 10 is turned on. The vacuum pump 2 10 draws in air from the upper right corner of the drying chamber 3 through the opening on the upper right side of the fixed housing 1 and the filter screen 11 inside the center of the baffle 9, further expelling the humid air and reducing the temperature of the material. The conveying mechanism 2 12 has the same structure as the conveying mechanism 1 2. Turning on the conveying mechanism 2 12 can continue to transport the material in the lower right corner of the drying chamber 3 to the next process. Throughout the process, the support seat 24 supports the conveyor belt 23, ensuring the stable operation of the conveyor belt 23.

[0032] The control method of this utility model is either manual start-up or control through existing automation technology. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A fluidized bed dryer, characterized in that: It includes a fixed housing (1), a conveying mechanism (2), a drying chamber (3), a feeding hopper (4), a dispersing mechanism (5), an air inlet (6), a heater (7), a vacuum pump (8), a baffle (9), a vacuum pump (2) (10), a filter screen (11), a conveying mechanism (2) (12), a rotating shaft (13), a spraying tooth (14), and a motor (15); The fixed housing (1) is provided with a drying chamber (3); The drying chamber (3) has a feeding hopper (4) at the upper left opening, a transverse conveying mechanism (2) at the lower left side, and a dispersing mechanism (5) at the upper left side. The air inlet (6) is located on the upper left side of the drying chamber (3); The heater (7) is fixedly connected to the left side of the center of the drying chamber (3); The baffle (9) is fixedly connected to the upper right side of the drying chamber (3), and a filter screen (11) is fixedly connected inside the center of the upper side of the baffle (9); The vacuum pump (8) is fixedly connected to the central opening on the upper side of the fixed housing (1); The second vacuum pump (10) is fixedly connected to the upper right opening of the fixed housing (1), and the lower opening of the second vacuum pump (10) is connected to the upper side of the filter screen (11). The second conveying mechanism (12) is inclined and located on the lower right side of the drying chamber (3); The motor (15) is fixedly connected to the outside of the rear side of the fixed housing (1); The rotating shaft (13) is movably connected to the lower right side of the center of the drying chamber (3). The rear center of the rotating shaft (13) is fixedly connected to the output shaft of motor (15). Several spraying teeth (14) are uniformly fixedly connected to the outside of the rotating shaft (13).

2. The fluidized bed dryer according to claim 1, characterized in that: The specific structure of the dispersing mechanism (5) includes a cover (51), dispersing teeth (52), a transmission shaft (53), and a second motor (54); The cover (51) is fixedly connected to the left side of the drying chamber (3); The drive shaft (53) is located inside the cover (51). The drive shaft (53) is movably connected to the left side of the drying chamber (3). The rear center of the drive shaft (53) is fixedly connected to the output shaft of the second motor (54), and the second motor (54) is fixedly connected to the rear outside of the fixed housing (1).

3. The fluidized bed dryer according to claim 2, characterized in that: The second motor (54) is a servo motor or a stepper motor.

4. The fluidized bed dryer according to claim 1, characterized in that: The second conveying mechanism (12) has the same structure as the first conveying mechanism (2). The specific structure of the first conveying mechanism (2) includes a third motor (21), a driving roller (22), a conveyor belt (23), a support base (24), and a driven roller (25). The active roller (22) is movably connected to the left side below the drying chamber (3). The rear center of the active roller (22) is fixedly connected to the output shaft of the motor (21), and the motor (21) is fixedly connected to the outside of the fixed housing (1). The driven roller (25) is movably connected to the right side below the drying chamber (3), and the driven roller (25) is connected to the driving roller (22) through the conveyor belt (23); The support base (24) is fixedly connected to the bottom of the drying chamber (3), and the top surface of the support base (24) is connected to the inner top surface of the conveyor belt (23).

5. The fluidized bed dryer according to claim 4, characterized in that: The motor three (21) is a servo motor or a stepper motor.

6. The fluidized bed dryer according to claim 1, characterized in that: The motor (15) is a servo motor or a stepper motor.

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