Boiling dryer with adjustable rake structure

Abstract

The utility model discloses a kind of boiling drying machine with adjustable harrow tooth structure, including rack and install to the drying machine main body on rack, the inside rotation of drying machine main body is equipped with agitator, driving motor for driving agitator is installed on the rack, the agitator includes hollow shaft and multiple telescopic harrow rods. The utility model is communicated by using hollow shaft and positioning tube inside, by using air pressure adjustment push piston block drive slide rod telescopic adjustment, the length of adjusting harrow rod is realized, so that the device has the advantage that the length of harrow rod is adjusted using air pressure, the effect of material turning over is better, reduce caking, improve drying uniformity, and the angle of each airflow distribution plate relative to horizontal direction is different, so that the cutting and guiding effect of airflow is better, the contact between airflow and material is more uniform, the blowing effect is better, and the drying is more uniform.

Description

Technical Field

[0001] This utility model relates to the field of fluidized bed dryer technology, and more specifically, to a fluidized bed dryer with an adjustable rake tooth structure. Background Technology

[0002] A fluidized bed dryer is an industrial device that uses hot air to make materials fluidized and boil, achieving rapid drying. Its core working principle is to put powdered materials into a sealed container, use airflow to suspend and circulate the material particles, and at the same time heat the air through a heating system (such as resistance wire), so that the material can efficiently evaporate water during dynamic tumbling.

[0003] Traditional dryers have fixed-length rakes, resulting in poor material agitation. Fluidized bed drying is prone to problems such as material clumping and uneven drying. At the same time, the rakes lack the effect of stirring the airflow, leading to insufficient contact between the airflow and the material. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a fluidized bed dryer with an adjustable rake tooth structure to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution; A fluidized bed dryer with an adjustable rake tooth structure includes a frame and a dryer body mounted on the frame. An agitator is rotatably mounted inside the dryer body, and a drive motor for driving the agitator is mounted on the frame. The agitator includes a hollow shaft and multiple telescopic rakes. The hollow shaft is sealed and rotatably connected to the interior of the dryer body and extends to the outside at both ends. The drive motor is connected to one end of the hollow shaft. The other end of the hollow shaft is connected to an external pressurizing device to adjust the internal pressure of the hollow shaft. The telescopic rakes are evenly distributed and fixed to the outside of the hollow shaft for stirring the material.

[0006] As a further description of the above technical solution: the telescopic rake includes a positioning tube, a piston block, an elastic element, and an airflow distribution plate. One end of the positioning tube is inserted and fixed to the inside of the hollow shaft. The outer side of the piston block is slidably connected to the inside of the positioning tube. The elastic element is movably installed inside the positioning tube. The piston block and the elastic element are connected and cooperated.

[0007] As a further description of the above technical solution: the elastic component includes a slide rod and a damping spring. One end of the slide rod passes through and is slidably connected to the inside of the positioning tube and is fixedly connected to the piston block. The damping spring is sleeved on the outside of the slide rod. One end of the damping spring is fixedly connected to the inside of the positioning tube, and the other end of the damping spring is fixedly connected to the piston block. The end of the slide rod located outside the positioning tube is fixedly connected to the airflow distribution plate.

[0008] As a further description of the above technical solution: two auxiliary positioning components are fixedly connected to the outside of the piston block, and two sets of positioning grooves that cooperate with the auxiliary positioning components are opened inside the positioning tube.

[0009] As a further description of the above technical solution: the auxiliary positioning component includes a push spring, a sliding block and a ball bearing. One end of the push spring is fixedly connected to the inside of the piston block, and the other end of the push spring is fixedly connected to the sliding block. The outer side of the sliding block is slidably connected to the inside of the positioning tube. The ball bearing is rotatably installed on the outer side of the sliding block, and the outer side of the ball bearing extends to the outer side of the piston block and cooperates with the positioning groove.

[0010] As a further description of the above technical solution: the angle of each of the airflow distribution plates relative to the horizontal direction is different.

[0011] Compared with existing technologies, the advantages of this utility model are: (1) This scheme utilizes the hollow shaft to connect with the inside of the positioning tube, and uses air pressure regulation to drive the piston block to drive the slide rod to extend and retract, thereby adjusting the length of the rake rod. This enables the device to have the advantages of using air pressure to adjust the length of the rake rod, resulting in better material turning effect, reduced agglomeration, and improved drying uniformity.

[0012] (2) This scheme has the advantage that each airflow distribution plate has a different angle relative to the horizontal direction, which makes the cutting and guiding effect of the airflow better, the airflow and material contact more evenly, the blowing effect is better, and the drying is more uniform. Attached Figure Description

[0013] Figure 1 This is a top view of the structure of this utility model; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3 This is a partial side view sectional structural diagram of the present invention; Figure 4 for Figure 3 Enlarged schematic diagram of the structure of section A in the middle.

[0014] Explanation of the labels in the diagram: 1. Frame; 2. Dryer body; 3. Agitator; 31. Hollow shaft; 32. Telescopic rake; 321. Positioning tube; 322. Piston block; 323. Elastic component; 3231. Slide rod; 3232. Damping spring; 324. Airflow distribution plate; 4. Drive motor; 5. Auxiliary positioning component; 51. Push spring; 52. Sliding block; 53. Ball bearing; 6. Positioning groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model; It should be noted that: all electrical components in this case and their compatible power supplies should be connected by wires by those skilled in the art, and the drive motor and dryer body should be connected to the equipment power supply. In addition, a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the working principle described below, and the electrical connection between each electrical component should be completed in the order of operation. The detailed connection method is well known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0016] The model of the drive motor can be (110EMA-040A / B).

[0017] To address the problems of poor material agitation and non-adjustable rake length in traditional dryers, Example 1 is proposed: Please see Figure 1-4 In this utility model, a fluidized bed dryer with an adjustable rake tooth structure includes a frame 1 and a dryer body 2 mounted on the frame 1. An agitator 3 is rotatably mounted inside the dryer body 2, and a drive motor 4 for driving the agitator 3 is mounted on the frame 1. The agitator 3 includes a hollow shaft 31 and multiple telescopic rakes 32. The hollow shaft 31 is sealed and rotatably connected to the interior of the dryer body 2 and extends to the outside at both ends. The drive motor 4 is connected to one end of the hollow shaft 31. The other end of the hollow shaft 31 is connected to an external pressurizing device to adjust the internal pressure of the hollow shaft 31. The telescopic rakes 32 are evenly distributed and fixed to the outside of the hollow shaft 31 for stirring the material.

[0018] The telescopic rake 32 includes a positioning tube 321, a piston block 322, an elastic element 323, and an airflow distribution plate 324. One end of the positioning tube 321 is inserted and fixed to the inside of the hollow shaft 31. The outer side of the piston block 322 is slidably connected to the inside of the positioning tube 321. The elastic element 323 is movably installed inside the positioning tube 321. The piston block 322 and the elastic element 323 are connected and cooperated.

[0019] The elastic element 323 includes a slide rod 3231 and a damping spring 3232. One end of the slide rod 3231 passes through and is slidably connected to the inside of the positioning tube 321 and is fixedly connected to the piston block 322. The damping spring 3232 is sleeved on the outside of the slide rod 3231. One end of the damping spring 3232 is fixedly connected to the inside of the positioning tube 321, and the other end of the damping spring 3232 is fixedly connected to the piston block 322. The end of the slide rod 3231 located outside the positioning tube 321 is fixedly connected to the airflow distribution plate 324. Each airflow distribution plate 324 has a different angle relative to the horizontal direction.

[0020] In this embodiment, moist material is first added to the inside of the fluidized bed dryer body 2, then the feed inlet is sealed, and then airflow is blown into the inside using a pressurizing device to make the material float. The drive motor 4 drives the agitator 3 to turn the material in conjunction with the airflow. In order to prevent uneven turning of the material, the external pressurizing device is activated to adjust the air pressure inside the hollow shaft 31. As the pressure inside the hollow shaft 31 increases, the internal piston block 322 is pushed, which compresses the damping spring 3232 to push the slide bar 3231 to move, thereby moving the airflow distribution plate 324 away from the hollow shaft 31. This makes the length of the entire rake longer, increasing the material dispersing effect. At the same time, the airflow distribution plate 324 rotates with the rake, achieving higher turning efficiency of the material. Thus, the device has the advantages of adjusting the length of the rake with air pressure, better turning effect of the material, reducing agglomeration, and improving drying uniformity.

[0021] Considering the poor stability maintenance effect after adjusting the length of the rake bar by airflow, which may lead to unstable positioning and poor material turning effect, a second embodiment is also proposed. Please see Figure 3 and Figure 4 Among them, two auxiliary positioning parts 5 are fixedly connected to the outside of the piston block 322, and two sets of positioning grooves 6 that cooperate with the auxiliary positioning parts 5 are opened inside the positioning tube 321.

[0022] The auxiliary positioning component 5 includes a push spring 51, a sliding block 52, and a ball 53. One end of the push spring 51 is fixedly connected to the inside of the piston block 322, and the other end of the push spring 51 is fixedly connected to the sliding block 52. The outer side of the sliding block 52 is slidably connected to the inside of the positioning tube 321. The ball 53 is rotatably mounted to the outer side of the sliding block 52, and the outer side of the ball 53 extends to the outer side of the piston block 322 and cooperates with the positioning groove 6.

[0023] In this embodiment, after the piston block 322 is pushed, it slides along the inside of the positioning tube 321. While it slides under force, the balls 53 on both sides are squeezed out of the positioning groove 6 by the inner wall of the positioning tube 321 under the action of the thrust and roll into the next positioning groove 6 as it moves. At this time, the internal air pressure and the counter thrust of the damping spring 3232 are kept in balance. The balls 53 cooperate with the positioning groove 6 to improve the positioning stability of the piston block 322, making the rake rod adjustment positioning more stable and ensuring the material turning effect.

[0024] Please see Figure 2 In this context, each airflow distribution plate 324 has a different angle relative to the horizontal direction.

[0025] In this embodiment, each airflow distribution plate 324 has a different angle relative to the horizontal direction, which makes its cutting and guiding effect on the airflow better, resulting in more uniform contact between the airflow and the material, better blowing effect, and more uniform drying.

[0026] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A fluidized bed dryer with an adjustable rake tooth structure, comprising a frame (1) and a dryer body (2) mounted on the frame (1), characterized in that: The dryer body (2) is equipped with an agitator (3) that rotates inside, and a drive motor (4) for driving the agitator (3) is installed on the frame (1). The agitator (3) includes a hollow shaft (31) and multiple telescopic rakes (32). The hollow shaft (31) is sealed and rotatably connected to the interior of the dryer body (2) and both ends extend to the outside. The drive motor (4) is connected to one end of the hollow shaft (31) for transmission. The other end of the hollow shaft (31) is connected to an external pressurizing device to adjust the internal pressure of the hollow shaft (31). The telescopic rakes (32) are evenly distributed and fixed to the outside of the hollow shaft (31) for stirring the material.

2. A fluidized bed dryer with an adjustable rake tooth structure according to claim 1, characterized in that: The telescopic rake (32) includes a positioning tube (321), a piston block (322), an elastic element (323), and an airflow distribution plate (324). One end of the positioning tube (321) is inserted and fixed to the inside of the hollow shaft (31). The outer side of the piston block (322) is slidably connected to the inside of the positioning tube (321). The elastic element (323) is movably installed inside the positioning tube (321). The piston block (322) and the elastic element (323) are connected and cooperated.

3. A fluidized bed dryer with an adjustable rake tooth structure according to claim 2, characterized in that: The elastic element (323) includes a slide rod (3231) and a damping spring (3232). One end of the slide rod (3231) passes through and is slidably connected to the inside of the positioning tube (321) and is fixedly connected to the piston block (322). The damping spring (3232) is sleeved on the outside of the slide rod (3231). One end of the damping spring (3232) is fixedly connected to the inside of the positioning tube (321), and the other end of the damping spring (3232) is fixedly connected to the piston block (322). The end of the slide rod (3231) located outside the positioning tube (321) is fixedly connected to the airflow distribution plate (324).

4. A fluidized bed dryer with an adjustable rake tooth structure according to claim 2, characterized in that: Two auxiliary positioning components (5) are fixedly connected to the outside of the piston block (322), and two sets of positioning grooves (6) that cooperate with the auxiliary positioning components (5) are opened inside the positioning tube (321).

5. A fluidized bed dryer with an adjustable rake tooth structure according to claim 4, characterized in that: The auxiliary positioning component (5) includes a push spring (51), a sliding block (52), and a ball (53). One end of the push spring (51) is fixedly connected to the inside of the piston block (322), and the other end of the push spring (51) is fixedly connected to the sliding block (52). The outer side of the sliding block (52) is slidably connected to the inside of the positioning tube (321). The ball (53) is rotatably installed on the outer side of the sliding block (52), and the outer side of the ball (53) extends to the outer side of the piston block (322) and cooperates with the positioning groove (6).

6. A fluidized bed dryer with an adjustable rake tooth structure according to claim 2, characterized in that: Each of the airflow distribution plates (324) has a different angle relative to the horizontal direction.

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