Equipment for quickly drying granulated and cooled granules

Abstract

The invention discloses a rapid drying device after granulation cooling, and relates to the technical field of granulation drying, the rapid drying device comprises a roller and a screen mesh assembly, a support is fixed on the inner side of the front end of the roller, the screen mesh assembly is fixed in the support, a spiral material conveying sheet is arranged on the inner wall of a screen mesh cylinder, and a beating arm is rotatably connected in a rotating shaft frame. According to the equipment for rapidly drying the granulated particles after cooling, the striking arm circularly strikes the surfaces of the granulated particles under the action of gravity through rotation of the screen barrel to vibrate the granulated particles, powder on the surfaces of the dried particles is shaken off through the vibration acting force, the powder is discharged from meshes through airflow flowing, the particles are independently collected after being dried, and the drying efficiency is improved. In this way, the problem that the quality of finished products is affected due to the fact that powder is attached to the surfaces of the particles after the particles are dried is solved, meanwhile, the position where the beating rubber head beats the surface of the screen barrel coincides with the spiral path of the spiral conveying piece, the anti-beating capacity of the beaten portion of the screen barrel is improved through the spiral conveying piece, and therefore the situation that the screen barrel sinks inwards due to stress is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of granulation and drying, and particularly to a rapid drying device for granulation cooling. Background Art

[0002] Granulation is the process of processing materials such as powders, small particles or liquids into granular products with certain shapes, sizes and properties. After granulation cooling, there may still be a certain amount of moisture on the surface and inside of the granules. It is necessary to use a rapid drying device to heat, ventilate and other methods to quickly evaporate the moisture, reduce the moisture content of the granules, meet the quality requirements of the products, and prevent problems such as agglomeration and mildew of the granules due to excessive moisture.

[0003] When the existing rapid drying devices such as drum drying devices dry granular articles, powders will be generated on the surface of the particulate matter as the moisture evaporates. Therefore, the powders will adhere to the inner side of the drum, and the powders are easily discharged together with the dried granules. The presence of powders in the particulate matter will affect the quality of the finished product.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a rapid drying device for granulation cooling is proposed. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a rapid drying device for granulation cooling, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A rapid drying device for granulation cooling, including a drum and a screen assembly. A bracket is fixed inside the front end of the drum, and the screen assembly is fixed inside the bracket. The screen assembly includes a screen cylinder, a spiral feeding blade, a rotating shaft frame, a striking arm, an outer end frame, a fixed shaft, an air flow cover, a first suction box, a pump body and a rotating storage cylinder. A spiral feeding blade is arranged on the inner wall of the screen cylinder, and the rotating shaft frames are spirally distributed on the outer wall of the screen cylinder. The striking arm is rotatably connected inside the rotating shaft frame. The outer end frame is arranged in parallel at the rear end of the screen cylinder, and a fixed shaft is fixed on the top of the outer end frame. An air flow cover is fixed at the end of the fixed shaft, and the first suction box is slidably connected to the surface of the air flow cover. The rear end of the outer side of the first suction box is connected with a pump body, and the pump body is connected with the rotating storage cylinder through a pipeline.

[0007] Furthermore, a striking rubber head is fixed at the end of the striking arm, and the striking rubber heads are spirally distributed and coincide with the spiral path of the spiral feeding blade.

[0008] Furthermore, the shape of the first suction box is adapted to the shape of the air flow cover, and the front end surface of the first suction box is connected to the rear end surface of the screen cylinder.

[0009] Further, the first suction box is communicated with the rotating storage cylinder through a pump body, and the rotating storage cylinder is sleeved and rotatably connected to the outer wall of the fixed shaft.

[0010] Further, the front end of the roller is connected with a fixed outer cylinder through a bearing, and a fixed inner cylinder is fixed inside the fixed outer cylinder.

[0011] Further, the fixed inner cylinder is rotatably connected to the front end of the screen cylinder through a bearing, and a feed hopper is arranged at the top of the fixed inner cylinder.

[0012] Further, a bearing support frame is rotatably connected to the outer wall of the rear end of the screen cylinder, and the bearing support frame is rotatably connected to the roller.

[0013] Further, a hot air pump is fixed on the outer side of the fixed outer cylinder, the intake end of the hot air pump is communicated with an air heating device through a pipeline, and the exhaust end of the hot air pump is communicated with the inside of the fixed inner cylinder and the screen cylinder.

[0014] Further, a toothed ring is fixed on the outer wall of the roller, a transmission gear disc is meshed with the side of the toothed ring, and a driving motor is connected to one side of the transmission gear disc.

[0015] Further, a second suction box is arranged at the bottom of the inner wall of the roller, the second suction box is connected with an air extraction pump through a pipeline, and the air extraction pump is fixed at the bottom of the side of the outer end frame.

[0016] The present invention provides a rapid drying device after granulation cooling, which has the following beneficial effects: 1. In this rapid drying device after granulation cooling, a screen cylinder that rotates synchronously is arranged inside the roller. By using the rotation of the screen cylinder, the striking arms strike its surface under the action of gravity in a cycle to make it vibrate. Thus, the powder on the surface of the dried particulate matter is shaken off by the vibration force, and the powder is discharged from the mesh holes by the air flow. In this way, the particulate matter is separately collected after drying, so as to solve the problem that the powder adheres to the surface of the particulate matter after drying and affects the quality of the finished product. At the same time, the position where the striking rubber head strikes the surface of the screen cylinder coincides with the spiral path of the spiral feeding blade, and the spiral feeding blade improves the impact resistance of the struck part of the screen cylinder, thus avoiding the screen cylinder from being concave due to the force.

[0017] 2. In this rapid drying device after granulation cooling, when the screen cylinder rotates, its tail end drives the first suction box and the pump body to rotate along the outer wall of the air flow cover. At the same time, the rotating storage cylinder rotates on the surface of the fixed shaft. A negative air pressure is generated on the side of the first suction box by the pump body, so that the powder attached to the surface of the air flow cover is comprehensively absorbed during the rotation process. The absorbed powder is transferred to the rotating storage cylinder for temporary storage. The rotating storage cylinder rotates to prevent the pipeline from being wound and knotted, and can also prevent the powder attached to the surface of the air flow cover from accumulating and affecting its guiding effect on the air flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the internal structure of the drum of a rapid drying device after granulation and cooling according to the present invention; Figure 2 Schematic diagram of the external structure of the drum of a rapid drying device after granulation and cooling according to the present invention; Figure 3 Schematic diagram of the hot air pump structure of a rapid drying device after granulation and cooling according to the present invention; Figure 4 Schematic diagram of the screen drum structure of a rapid drying device after granulation and cooling according to the present invention; Figure 5 Schematic diagram of the air flow hood structure of a rapid drying device after granulation and cooling according to the present invention.

[0019] In the figure: 1, drum; 2, bracket; 3, screen assembly; 301, screen drum; 302, spiral feeding piece; 303, rotating shaft frame; 304, striking arm; 305, outer end frame; 306, fixed shaft; 307, air flow hood; 308, first suction box; 309, pump body; 310, rotating storage cylinder; 4, fixed outer cylinder; 5, fixed inner cylinder; 6, feed hopper; 7, bearing support frame; 8, hot air pump; 9, gear ring; 10, driving gear disc; 11, driving motor; 12, second suction box; 13, air extraction pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] Such as Figures 1 - 5As shown in the figure, the present invention provides a technical solution: a rapid drying device after granulation and cooling, including a drum 1 and a screen assembly 3. A bracket 2 is fixed inside the front end of the drum 1, and the screen assembly 3 is fixed inside the bracket 2. The screen assembly 3 includes a screen cylinder 301, a spiral feeding piece 302, a rotating shaft frame 303, a striking arm 304, an outer end frame 305, a fixed shaft 306, an air flow cover 307, a first suction box 308, a pump body 309 and a rotating storage cylinder 310. A spiral feeding piece 302 is arranged on the inner wall of the screen cylinder 301, and rotating shaft frames 303 are spirally distributed on the outer wall of the screen cylinder 301. A striking arm 304 is rotatably connected inside the rotating shaft frame 303. An outer end frame 305 is arranged in parallel at the rear end of the screen cylinder 301, and a fixed shaft 306 is fixed on the top of the outer end frame 305. An air flow cover 307 is fixed at the end of the fixed shaft 306, and a first suction box 308 is slidably connected to the surface of the air flow cover 307. A pump body 309 is connected to the rear end of the outer side of the first suction box 308, and the pump body 309 is connected to the rotating storage cylinder 310 through a pipeline. A striking rubber head is fixed at the end of the striking arm 304, and the striking rubber heads are spirally distributed and coincide with the spiral path of the spiral feeding piece 302. The shape of the first suction box 308 is adapted to the shape of the air flow cover 307, and the front surface of the first suction box 308 is connected to the rear end surface of the screen cylinder 301. The first suction box 308 is communicated with the rotating storage cylinder 310 through the pump body 309, and the rotating storage cylinder 310 is sleeved and rotatably connected to the outer wall of the fixed shaft 306. The front end of the drum 1 is connected to a fixed outer cylinder 4 through a bearing, and a fixed inner cylinder 5 is fixed inside the fixed outer cylinder 4. The fixed inner cylinder 5 is rotatably connected to the front end of the screen cylinder 301 through a bearing, and a feed hopper 6 is arranged on the top of the fixed inner cylinder 5. The outer wall of the rear end of the screen cylinder 301 is rotatably connected to a bearing support frame 7, and the bearing support frame 7 is rotatably connected to the drum 1. A hot air pump 8 is fixed on the outer side surface of the fixed outer cylinder 4, and the intake end of the hot air pump 8 is communicated with an air heating device through a pipeline. The exhaust end of the hot air pump 8 is communicated with the inside of the fixed inner cylinder 5 and the screen cylinder 301. A gear ring 9 is fixed on the outer wall of the drum 1, and a transmission gear disc 10 is meshed with the side surface of the gear ring 9. A driving motor 11 is connected to one side of the transmission gear disc 10. A second suction box 12 is arranged at the bottom of the inner wall of the drum 1, and the second suction box 12 is connected to an air extraction pump 13 through a pipeline, and the air extraction pump 13 is fixed at the bottom of the side surface of the outer end frame 305; The specific operation is as follows. First, the cooled particulate matter is put into the interior of the screen cylinder 301 through the feed hopper 6 by passing through the fixed inner cylinder 5. At the same time, the hot air pump 8 injects the heated air into the interior of the screen cylinder 301 along the fixed inner cylinder 5. Meanwhile, the drive motor 11 drives the transmission gear disc 10, causing the gear ring 9 to drive the roller 1 to rotate. The roller 1 drives the screen cylinder 301 to rotate through the bracket 2. While the screen cylinder 301 is rotating, the particulate matter is continuously stirred and moved backward by the rotation of the spiral feeding blade 302. During this process, the input hot air is used to dry the particulate matter. When the hot air flow reaches the tail end of the screen cylinder 301, the air flow is guided by the air flow hood 307 to carry the powder out through the mesh holes on the surface of the screen cylinder 301, while the particulate matter falls from the gap between the air flow hood 307 and the rear end of the screen cylinder 301, and a collection hopper is arranged at the falling position for transfer; Since the surface of the screen cylinder 301 has mesh holes, the inner diameter of the mesh holes is smaller than the outer diameter of the particulate matter and larger than the outer diameter of the powder. When the rotating shaft frame 303 rotates with the screen cylinder 301 to a lower position, the striking head of the striking arm 304 moves away from the surface of the screen cylinder 301 under the action of gravity. When the rotating shaft frame 303 rotates to an upper position, the striking head of the striking arm 304 falls under the action of gravity to strike the surface of the screen cylinder 301. The maximum opening and closing angle of the striking arm 304 does not exceed sixty degrees, and the surface of the screen cylinder 301 is vibrated by the strike, thereby shaking off the powder on the surface of the particulate matter during the transportation and drying process of the particulate matter. When the powder is shaken off, it flows with the air flow and affects passing through the mesh holes and adheres to the inner wall of the roller 1, while the particulate matter is discharged separately after removing the powder on its surface, thus solving the problem that the powder adheres to the surface of the particulate matter after drying and affects the quality of the finished product. The position where the striking head strikes the surface of the screen cylinder 301 coincides with the spiral path of the spiral feeding blade 302, and the spiral feeding blade 302 improves the impact resistance of the struck part of the screen cylinder 301; Based on the above description, the present invention is provided with a screen cylinder 301 that rotates synchronously inside the roller 1. The rotation of the screen cylinder 301 causes the striking arm 304 to strike its surface cyclically under the action of gravity, causing it to vibrate. Thus, the powder on the surface of the dried particulate matter is shaken off by the vibration force, and the powder is discharged from the mesh holes by the air flow. As a result, the particulate matter is separately collected after drying, thereby solving the problem that the powder adheres to the surface of the particulate matter after drying and affects the quality of the finished product. At the same time, the position where the striking head strikes the surface of the screen cylinder 301 coincides with the spiral path of the spiral feeding blade 302, and the spiral feeding blade 302 improves the impact resistance of the struck part of the screen cylinder 301, thereby preventing the screen cylinder 301 from being concave due to the force; At the outer wall of the tail end of the screen cylinder 301, a bearing support frame 7 is rotatably connected thereto, and the bearing support frame 7 is also rotatably connected to the drum 1. The stability of the screen cylinder 301 is improved through the bearing support frame 7 without hindering its rotation. A second suction box 12 is penetrated through the surface of the bearing support frame 7, and the bottom surface of the second suction box 12 is attached to the inner wall of the drum 1. A negative air pressure is generated at the bottom of the second suction box 12 by the air extraction pump 13 to absorb the powder on the inner wall of the rotating drum 1, thereby preventing the powder attached to the inner surface of the drum 1 from accumulating. When the screen cylinder 301 rotates, its tail end drives the first suction box 308 and the pump body 309 to rotate along the outer wall of the air flow cover 307. At the same time, the rotating storage cylinder 310 rotates on the surface of the fixed shaft 306. A negative air pressure is generated at the side of the first suction box 308 by the pump body 309, so that the powder attached to the surface of the air flow cover 307 is comprehensively absorbed during the rotation process. The absorbed powder is transferred to the rotating storage cylinder 310 for temporary storage. The rotating storage cylinder 310 rotates to prevent the pipeline from being wound and knotted, and can also prevent the powder attached to the surface of the air flow cover 307 from accumulating, thus affecting its air guiding effect.

[0022] In summary, when using this granulation and rapid drying equipment after cooling, first, the cooled particulate matter passes through the fixed inner cylinder 5 through the feed hopper 6 and is put into the interior of the screen cylinder 301. At the same time, the hot air pump 8 injects the heated air into the interior of the screen cylinder 301 along the fixed inner cylinder 5. At the same time, the drive motor 11 drives the transmission gear disc 10, so that the toothed ring 9 drives the drum 1 to rotate. The drum 1 drives the screen cylinder 301 to rotate through the bracket 2. While the screen cylinder 301 rotates, the particulate matter is continuously stirred and moved backward by the rotation of the spiral feeding blade 302. During this process, the particulate matter is dried by the input hot air. When the hot air flows to the tail end of the screen cylinder 301, the air flow is guided by the air flow cover 307 to carry the powder out through the mesh holes on the surface of the screen cylinder 301, and the particulate matter falls from the gap between the air flow cover 307 and the rear end of the screen cylinder 301. A collecting hopper is arranged at the falling position for transfer. Since the surface of the screen cylinder 301 has mesh holes, the inner diameter of the mesh holes is smaller than the outer diameter of the particulate matter and larger than the outer diameter of the powder. When the rotating shaft frame 303 rotates with the screen cylinder 301 to a position below the center, the striking head of the striking arm 304 moves away from the surface of the screen cylinder 301 under the action of gravity. When the rotating shaft frame 303 rotates to a position above the center, the striking head of the striking arm 304 falls under the action of gravity and strikes the surface of the screen cylinder 301. The surface of the screen cylinder 301 is vibrated by the strike, so that the powder on the surface of the particulate matter is shaken off during the transportation and drying process of the particulate matter. When the powder is shaken off, it flows with the air flow and affects passing through the mesh holes and adheres to the inner wall of the drum 1. At the outer wall of the tail end of the screen cylinder 301, a bearing support frame 7 is rotatably connected, and the bearing support frame 7 is also rotatably connected to the drum 1. The stability of the screen cylinder 301 is improved through the bearing support frame 7 without hindering its rotation. A second suction box 12 is penetrated through the surface of the bearing support frame 7. Since the bearing support frame 7 does not rotate with the screen cylinder 301 and the drum 1, both the bearing support frame 7 and the second suction box 12 are in a static state. The bottom surface of the second suction box 12 is attached to the inner wall of the drum 1. A negative air pressure is generated at the bottom of the second suction box 12 by using an air pump 13 to absorb the powder on the inner wall of the rotating drum 1, thereby preventing the powder attached to the inner surface of the drum 1 from accumulating. When the screen cylinder 301 rotates, its tail end drives the first suction box 308 and the pump body 309 to rotate along the outer wall of the air flow cover 307. At the same time, the rotating storage cylinder 310 rotates on the surface of the fixed shaft 306. A negative air pressure is generated at the side of the first suction box 308 by the pump body 309, so that the powder attached to the surface of the air flow cover 307 is comprehensively absorbed during the rotation process, and the absorbed powder is transferred to the rotating storage cylinder 310 for temporary storage.

[0023] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A granulation cooling and subsequent rapid drying device, comprising a drum (1) and a screen assembly (3), characterized in that: A support (2) is fixed to the inner side of the front end of the drum (1), and the screen assembly (3) is fixed inside the support (2). The screen assembly (3) comprises a screen cylinder (301), a spiral feed sheet (302), a rotating shaft frame (303), a striking arm (304), an outer end frame (305), a fixed shaft (306), an air flow cover (307), a first air suction box (308), a pump body (309) and a rotating storage cylinder (310). The inner wall of the screen cylinder (301) is provided with a spiral feed sheet (302), and the outer wall of the screen cylinder (301) is provided with spirally distributed A rotating shaft frame (303) is rotatably connected to a striking arm (304) inside the rotating shaft frame (303); an outer end frame (305) is arranged parallel to the rear end of the screen cylinder (301); a fixed shaft (306) is fixed to the top of the outer end frame (305); an airflow cover (307) is fixed to the end of the fixed shaft (306); a first air suction box (308) is slidably connected to the surface of the airflow cover (307); a pump body (309) is connected to the outer rear end of the first air suction box (308); and the pump body (309) is connected to a rotating storage cylinder (310) via a pipeline.

2. The granulation cooling and rapid drying equipment according to claim 1 is characterized in that: A striking rubber head is fixed at the end of the striking arm (304), and the striking rubber head is distributed in a spiral shape and coincides with the spiral path of the spiral feeding sheet (302).

3. The granulation cooling and rapid drying equipment according to claim 1 is characterized in that: The shape of the first air suction box (308) matches the shape of the airflow cover (307), and the front end surface of the first air suction box (308) is connected to the rear end surface of the screen cylinder (301).

4. The granulation cooling and rapid drying equipment according to claim 1 is characterized in that: The first air suction box (308) is connected to the rotating storage cylinder (310) through the pump body (309), and the rotating storage cylinder (310) is sleeved and rotatably connected to the outer wall of the fixed shaft (306).

5. The granulation cooling and rapid drying equipment according to claim 1 is characterized in that: The front end of the drum (1) is connected to a fixed outer cylinder (4) via a bearing, and a fixed inner cylinder (5) is fixed inside the fixed outer cylinder (4).

6. The granulation cooling and rapid drying equipment according to claim 5 is characterized in that: The fixed inner cylinder (5) is rotatably connected to the front end of the screen cylinder (301) via a bearing, and a feed hopper (6) is provided at the top of the fixed inner cylinder (5).

7. The granulation cooling and rapid drying equipment according to claim 1 is characterized in that: The rear end outer wall of the screen cylinder (301) is rotatably connected to a bearing support frame (7), and the bearing support frame (7) is rotatably connected to the drum (1).

8. The granulation cooling and rapid drying equipment according to claim 6 is characterized in that: A hot air pump (8) is fixed to the outer side of the fixed outer cylinder (4), and the air inlet end of the hot air pump (8) is connected to the air heating device through a pipeline, and the air outlet end of the hot air pump (8) is connected to the inside of the fixed inner cylinder (5) and the screen cylinder (301).

9. The granulation cooling and rapid drying equipment according to claim 1 is characterized in that: A toothed ring (9) is fixed to the outer wall of the drum (1), and a transmission toothed disc (10) is meshingly connected to the side surface of the toothed ring (9), and a drive motor (11) is connected to one side of the transmission toothed disc (10).

10. The granulation cooling and rapid drying equipment according to claim 1, characterized in that: A second air suction box (12) is provided at the bottom of the inner wall of the drum (1), and the second air suction box (12) is connected to an air suction pump (13) via a pipeline, and the air suction pump (13) is fixed to the bottom of the side of the outer end frame (305).

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