Drying and cooling device of double-screw granulator

Abstract

The utility model relates to the technical field of twin-screw pelletizers, in particular to a drying and cooling device of a twin-screw pelletizer, which comprises a bottom plate and a pelletizer body, the upper end face of the bottom plate is fixedly connected with two vertical plates, a stirring barrel is fixedly connected between the two vertical plates, an inner container is arranged in the stirring barrel, an air cavity is formed between the stirring barrel and the inner container, and the air cavity is communicated with the pelletizer body. A plurality of evenly-distributed air holes are formed in the outer wall of the inner container, a stirring shaft is rotationally connected into the stirring barrel, a plurality of connecting rods are fixedly connected to the outer wall of the stirring shaft, first spiral blades and second spiral blades are fixedly connected to the outer walls of the connecting rods, and the second spiral blades are located on the inner sides of the first spiral blades. Through cooperation of the air heater, the inner container and the air holes, hot air can make full contact with raw materials in the inner container, the drying efficiency is high, through cooperation of the driving motor, the stirring shaft, the connecting rod, the first spiral blade and the second spiral blade, the raw materials can be stirred more uniformly, and therefore the raw materials make uniform contact with the hot air, and drying is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw granulators, in particular to a drying and cooling device of a twin-screw granulator. Background Art

[0002] Twin-screw granulator is mainly used for filling, blending, modification, adding, chlorination, processing of polypropylene and super absorbent resin of rubber, plastic and engineering resin. When using twin-screw granulator for production, the raw materials for granulation can easily absorb moisture in the air and become damp. The performance of plastic products made from damp raw materials will be significantly reduced, thereby reducing the quality of plastic products and affecting the benefits of the enterprise.

[0003] Chinese patent CN213955873U discloses a drying and cooling mechanism of a twin-screw granulator, including a mounting base plate, the upper surface of which is respectively fixedly connected to a granulator body and a supporting vertical plate, the number of the supporting vertical plates is two, the opposite surfaces of the two supporting vertical plates are fixedly connected to two supporting horizontal plates, the surfaces of the two supporting horizontal plates are embedded with a raw material drying box, the inner bottom wall of the raw material drying box is rotatably connected to a rotating rod through a bearing, the lower surface of the raw material drying box is fixedly connected to a servo motor for driving the rotating rod, and the surface of the rotating rod is fixedly connected to an F-type stirring Rod, a discharge pipe is embedded in the inner bottom wall of the raw material drying box, the left side wall of the right supporting vertical plate is fixedly connected with a connecting mounting plate, the upper surface of the connecting mounting plate is respectively fixedly connected with a heating box, a fan and a filter box, by arranging a servo motor, a rotating rod and an F-type stirring rod, the interior of the raw material drying box can be fully stirred, and by arranging a heating box, a fan, an air outlet pipe and a dust filter bag, hot air can be blown into the interior of the raw material drying box while stirring the interior of the raw material drying box, so as to accelerate the drying of the raw materials and avoid the influence of the wet raw materials on the quality of the granulation products.

[0004] The drying and cooling mechanism of the above-mentioned twin-screw granulator has a problem that the hot air can only enter the raw material drying box from the discharge pipe, the hot air cannot fully contact the raw materials, and the F-type stirring rod does not stir the raw materials uniformly, resulting in low drying efficiency and uneven drying. Summary of the invention

[0005] In view of the above problems, the utility model proposes a drying and cooling device for a twin-screw granulator to solve the above problems.

[0006] The utility model is implemented as follows: a drying and cooling device for a twin-screw granulator comprises a bottom plate and a granulator body, wherein the granulator body is mounted on the upper end surface of the bottom plate, and the upper end surface of the bottom plate is fixedly connected to two symmetrically distributed vertical plates, and a stirring barrel located above the granulator body is fixedly connected between the two vertical plates, and an inner liner is arranged inside the stirring barrel, and an air cavity is formed between the stirring barrel and the inner liner, and a plurality of evenly distributed air holes are opened on the outer wall of the inner liner;

[0007] The stirring barrel is rotatably connected to a stirring shaft inside, a plurality of connecting rods are fixedly connected to the outer wall of the stirring shaft, a first spiral blade and a second spiral blade are fixedly connected to the outer walls of the plurality of connecting rods, and the second spiral blade is located on the inner side of the first spiral blade.

[0008] In order to facilitate the drying of raw materials, as a preferred drying and cooling device of a twin-screw granulator of the utility model, the left end face of the vertical plate on the left is fixedly connected with a mounting plate, the upper end face of the mounting plate is installed with a hot air blower, and the air outlet of the hot air blower is connected to the air cavity.

[0009] In order to facilitate driving the stirring shaft to rotate, as a preferred drying and cooling device of a twin-screw granulator of the utility model, a driving motor is installed on the right end surface of the vertical plate on the right side, and the output end of the driving motor is fixedly connected to the stirring shaft.

[0010] In order to facilitate feeding and discharging of materials, as a preferred drying and cooling device of a twin-screw granulator of the utility model, a feeding port is arranged on the top of the mixing barrel, and a discharging port is arranged on the right side of the bottom of the mixing barrel, and the discharging port is connected to the granulator body.

[0011] In order to facilitate uniform mixing of the raw materials, as a preferred drying and cooling device of a twin-screw granulator of the utility model, the spiral directions of the first spiral blade and the second spiral blade are opposite.

[0012] In order to prevent impurities from entering the mixing barrel, as a preferred drying and cooling device of a twin-screw granulator of the utility model, a filter is provided at the air inlet of the hot air blower.

[0013] In order to facilitate the control of the equipment, as a preferred drying and cooling device of a twin-screw granulator of the utility model, a controller is provided on the outer wall of the vertical plate on the right side, and the driving motor and the hot air blower are both electrically connected to the controller.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The drying and cooling device of the twin-screw granulator can make the hot air fully contact with the raw materials in the inner liner through the cooperation of the hot air blower, the inner liner and the air holes, and the drying efficiency is fast. The raw materials can be stirred more evenly through the cooperation of the driving motor, the stirring shaft, the connecting rod, the first spiral blade and the second spiral blade, so that the raw materials can be evenly contacted with the hot air and dried more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an overall structural diagram of a drying and cooling device of a twin-screw granulator of the utility model;

[0017] Figure 2 This is a front sectional view of a drying and cooling device of a twin-screw granulator of the utility model;

[0018] Figure 3 This is a structural diagram of the first spiral blade and the second spiral blade of the utility model.

[0019] In the figure, 1, bottom plate; 2, vertical plate; 3, granulator body; 4, stirring barrel; 5, feed port; 6, discharge port; 7, drive motor; 8, stirring shaft; 9, connecting rod; 10, first spiral blade; 11, second spiral blade; 12, mounting plate; 13, hot air blower; 14, controller; 15, liner; 16, air cavity; 17, air hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0022] See also Figure 1-3A drying and cooling device for a twin-screw granulator comprises a bottom plate 1 and a granulator body 3, the granulator body 3 is mounted on the upper end surface of the bottom plate 1, two symmetrically distributed vertical plates 2 are fixedly connected to the upper end surface of the bottom plate 1, a stirring barrel 4 located above the granulator body 3 is fixedly connected between the two vertical plates 2, an inner liner 15 is arranged inside the stirring barrel 4, an air cavity 16 is formed between the stirring barrel 4 and the inner liner 15, and a plurality of evenly distributed air holes 17 are opened on the outer wall of the inner liner 15;

[0023] The stirring barrel 4 is rotatably connected to a stirring shaft 8 , and a plurality of connecting rods 9 are fixedly connected to the outer wall of the stirring shaft 8 . A first spiral blade 10 and a second spiral blade 11 are fixedly connected to the outer wall of the plurality of connecting rods 9 . The second spiral blade 11 is located on the inner side of the first spiral blade 10 .

[0024] In this embodiment: turn on the hot air blower 13, the hot air blower 13 blows hot air into the air cavity 16, and enters the inner tank 15 from the multiple air holes 17, so that the raw materials are fully in contact with the hot air, and the drying efficiency is fast, start the drive motor 7, the drive motor 7 drives the stirring shaft 8 to rotate, and then drives the multiple connecting rods 9 to rotate, and the multiple connecting rods 9 further drive the first spiral blade 10 and the second spiral blade 11 to rotate, thereby stirring the raw materials, making the raw materials evenly in contact with the hot air, and drying more evenly.

[0025] As a technical optimization solution of the utility model, the left end face of the vertical plate 2 on the left side is fixedly connected with a mounting plate 12, and the upper end face of the mounting plate 12 is installed with a hot air blower 13, and the air outlet of the hot air blower 13 is connected to the air cavity 16.

[0026] In this embodiment, the hot air blower 13 is used to blow hot air into the mixing barrel 4, thereby quickly drying the raw materials.

[0027] As a technical optimization solution of the utility model, a drive motor 7 is installed on the right end surface of the vertical plate 2 located on the right side, and the output end of the drive motor 7 is fixedly connected to the stirring shaft 8.

[0028] In this embodiment, the stirring shaft 8 is driven to rotate by the driving motor 7 .

[0029] As a technical optimization solution of the utility model, a feed port 5 is provided on the top of the mixing barrel 4 , and a discharge port 6 is provided on the right side of the bottom of the mixing barrel 4 , and the discharge port 6 is connected to the granulator body 3 .

[0030] In this embodiment, a feed port 5 is provided on the top of the mixing barrel 4 to facilitate feeding, and a discharge port 6 is provided on the right side of the bottom of the mixing barrel 4 to facilitate discharging.

[0031] As a technical optimization solution of the present invention, the spiral directions of the first spiral blade 10 and the second spiral blade 11 are opposite.

[0032] In this embodiment, the spiral directions of the first spiral blade 10 and the second spiral blade 11 are opposite to each other, so that the raw materials are stirred more evenly.

[0033] As a technical optimization solution of the present invention, a filter is provided at the air inlet of the hot air blower 13 .

[0034] In this embodiment, a filter is provided at the air inlet of the hot air blower 13 to prevent impurities from entering the mixing barrel 4 .

[0035] As a technical optimization solution of the present invention, a controller 14 is provided on the outer wall of the vertical plate 2 on the right side, and the driving motor 7 and the hot air blower 13 are both electrically connected to the controller 14 .

[0036] In this embodiment, the controller 14 is used to control the driving motor 7 and the hot air blower 13, which saves time and effort and improves the degree of automation.

[0037] The working principle and use process of the utility model are as follows: when in use, firstly, the raw material is passed through the feed port 5 into the mixing barrel 4, and then the hot air blower 13 and the driving motor 7 are started, the hot air blower 13 blows the hot air into the air cavity 16, and enters the inner tank 15 from the plurality of air holes 17, so that the raw material is fully in contact with the hot air, and the drying efficiency is fast, the driving motor 7 drives the mixing shaft 8 to rotate, and then drives the plurality of connecting rods 9 to rotate, and the plurality of connecting rods 9 further drives the first spiral blade 10 and the second spiral blade 11 to rotate, so as to stir the raw material, make the raw material contact with the hot air evenly, and dry more evenly, after the drying is completed, the discharge port 6 is opened, and the raw material enters the granulator body 3 from the discharge port 6 for granulation.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drying and cooling device for a twin-screw granulator, comprising a bottom plate (1) and a granulator body (3), wherein the granulator body (3) is mounted on the upper end surface of the bottom plate (1), characterized in that: The upper end surface of the bottom plate (1) is fixedly connected to two symmetrically distributed vertical plates (2), a stirring barrel (4) located above the granulator body (3) is fixedly connected between the two vertical plates (2), an inner container (15) is arranged inside the stirring barrel (4), an air cavity (16) is formed between the stirring barrel (4) and the inner container (15), and a plurality of evenly distributed air holes (17) are provided on the outer wall of the inner container (15); The stirring barrel (4) is rotatably connected to a stirring shaft (8), the outer wall of the stirring shaft (8) is fixedly connected to a plurality of connecting rods (9), the outer walls of the plurality of connecting rods (9) are fixedly connected to a first spiral blade (10) and a second spiral blade (11), and the second spiral blade (11) is located on the inner side of the first spiral blade (10).

2. The drying and cooling device of a twin-screw granulator according to claim 1, characterized in that: The left end surface of the vertical plate (2) located on the left side is fixedly connected to a mounting plate (12), the upper end surface of the mounting plate (12) is mounted with a hot air blower (13), and the air outlet of the hot air blower (13) is in communication with the air cavity (16).

3. The drying and cooling device of a twin-screw granulator according to claim 2, characterized in that: A drive motor (7) is installed on the right end surface of the vertical plate (2) located on the right side, and the output end of the drive motor (7) is fixedly connected to the stirring shaft (8).

4. The drying and cooling device of a twin-screw granulator according to claim 1, characterized in that: The top of the stirring barrel (4) is provided with a feed port (5), and the right side of the bottom of the stirring barrel (4) is provided with a discharge port (6), and the discharge port (6) is connected to the granulator body (3).

5. The drying and cooling device of a twin-screw granulator according to claim 1, characterized in that: The spiral directions of the first spiral blade (10) and the second spiral blade (11) are opposite.

6. The drying and cooling device of a twin-screw granulator according to claim 2, characterized in that: The air inlet of the hot air blower (13) is provided with a filter.

7. The drying and cooling device of a twin-screw granulator according to claim 3, characterized in that: A controller (14) is provided on the outer wall of the vertical plate (2) located on the right side, and the driving motor (7) and the hot air blower (13) are both electrically connected to the controller (14).

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