A PLA drying and dehumidification equipment

Abstract

The utility model provides a PLA drying and dehumidifying device, which belongs to the technical field of drying equipment, and solves the problem that PLA materials cannot be dried quickly in the prior art. The PLA drying and dehumidifying device comprises a casing, a drying chamber for placing PLA materials is provided inside the casing, a feed port is fixedly installed at the upper end of the casing, a discharge pipe connected to the drying chamber is fixedly installed at the lower end of the casing, a motor and a hot air blower are fixedly installed at the upper end of the casing, a stirring mechanism is provided inside the drying chamber, and a drying mechanism matched with the stirring mechanism is also provided inside the drying chamber, the stirring mechanism comprises a rotating shaft fixedly installed at the end of the motor output shaft, and the lower end of the rotating shaft passes through the top wall of the casing and extends to the interior of the drying chamber. The utility model has the advantage of fast drying of materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying equipment and relates to drying and dehumidifying equipment, in particular to PLA drying and dehumidifying equipment. Background Art

[0002] Polylactic acid (PLA) is a new type of biodegradable material, made from starch raw materials from renewable plant resources. Starch raw materials are saccharified to obtain glucose, which is then fermented with glucose and certain strains of bacteria to produce high-purity lactic acid, which is then synthesized into polylactic acid of a certain molecular weight through chemical synthesis. It has good biodegradability.

[0003] PLA easily absorbs moisture from the air and needs to be dried and dehumidified during processing, but the heating process of PLA is relatively slow and the drying time is long.

[0004] After searching, it is found that a PLA crystallization drying and dehumidification device is disclosed in Chinese patent literature [Application number: CN201920034661.4; Publication number: CN209605509U], which includes a drying and dehumidification box, a door body and a base. One side of the drying and dehumidification box is rotatably connected to the door body, and the bottom end of the drying and dehumidification box is fixedly installed with the base, the interior of the drying and dehumidification box is fixedly installed with a dryer, and the interior of the drying and dehumidification box is slidably connected with a support net near the upper position of the dryer, the bottom end of the interior of the drying and dehumidification box is fixedly installed with a blower, and the upper surface of the drying and dehumidification box is embedded with an air outlet, and the interior of the door body is embedded with transparent tempered glass.

[0005] Although the dryer disclosed in the patent can dry PLA crystals, the material is in a static state during use, so that the material at the bottom layer cannot be dried in time, thereby reducing the dehumidification efficiency of the material. Utility Model Content

[0006] The purpose of the utility model is to solve the above problems in the existing technology and propose a PLA drying and dehumidifying device. The technical problem to be solved by the PLA drying and dehumidifying device is: how to achieve rapid drying of PLA materials.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A PLA drying and dehumidifying device comprises a casing, wherein a drying chamber for placing PLA materials is provided inside the casing, a feed port is fixedly installed at the upper end of the casing, a discharge pipe connected to the drying chamber is fixedly installed at the lower end of the casing, a motor and a hot air blower are fixedly installed at the upper end of the casing, a stirring mechanism is provided inside the drying chamber, and a drying mechanism coordinated with the stirring mechanism and the hot air blower is also provided inside the drying chamber.

[0009] The working principle of the utility model is that the material in the drying chamber is quickly stirred by the stirring mechanism, and hot air is blown into the drying chamber by the drying mechanism, so as to accelerate the drying of the material.

[0010] The stirring mechanism comprises a rotating shaft fixedly mounted on the end of the motor output shaft, the lower end of the rotating shaft penetrates the top wall of the casing and extends to the interior of the drying chamber, and two fixing rods are fixedly mounted on the rotating shaft located inside the casing.

[0011] With the above structure, the motor can drive the shaft to rotate rapidly, and then drive the fixed rod outside the shaft to rotate, thereby driving the fixed rod to stir the material in the middle of the drying chamber.

[0012] Sliding rods are slidably mounted on both ends of the fixed rod, and a push plate is fixedly mounted on one end of the sliding rod.

[0013] With the above structure, the sliding rod and the push plate can be driven to rotate by the fixed rod, and then the sliding rod and the push plate will stir the material at the edge of the drying chamber, thereby accelerating the drying progress.

[0014] A first magnet is fixedly mounted inside the push plate, and a plurality of second magnets are fixedly mounted on the inner wall of the drying chamber, and the first magnet and the second magnet repel each other.

[0015] With the above structure, during the rotation of the fixed rod, the sliding rod and the push plate will tend to move toward the edge of the drying chamber, but when the first magnet and the second magnet inside the push plate approach each other, the sliding rod and the push plate will be pushed back into the fixed rod, and reciprocate in this way, thereby continuously pushing the material at the edge of the drying chamber to the center of the drying chamber, thereby improving the drying efficiency.

[0016] A sliding cavity is provided inside the fixed rod, a sliding plug is slidably installed inside the sliding cavity, the other end of the sliding rod is inserted into the sliding cavity and fixedly connected to the sliding plug, and the sliding plug is elastically connected to the inner wall of the sliding cavity through a tension spring.

[0017] With the above structure, during the movement of the slide bar, the tension spring outside the slide bar will also give the slide plug a reaction force, which will then cooperate with the repulsive force between the magnets to facilitate better reciprocating movement of the slide bar and the push plate.

[0018] The drying mechanism includes a strip-shaped cavity opened at the upper end of the casing, the lower end of the hot air blower is connected to the interior of the strip-shaped cavity, the rotating shaft passes through the strip-shaped cavity, the rotating shaft adopts a hollow tube body, the upper end of the rotating shaft is provided with a first air guide hole connected to the strip-shaped cavity, the lower end of the rotating shaft is provided with second air guide holes respectively connected to two sliding cavities, and the two second air guide holes are both connected to the first air guide hole.

[0019] With the above structure, during the rotation of the shaft, the hot air blower blows hot air into the interior of the strip cavity, and enters the second air guide hole through the first air guide hole, thereby facilitating the hot air to enter the interior of the sliding cavity.

[0020] The slide rod is a hollow tube, a circular hole cooperating with the slide rod is provided inside the slide plug, and a plurality of exhaust holes are arranged outside the push plate. The plurality of exhaust holes are connected with the slide cavity through the slide rod and the circular hole inside the slide plug.

[0021] With the above structure, during the movement of the push plate, hot air can enter the multiple exhaust holes through the circular holes and the hollow slide rod, and then be discharged into the interior of the drying chamber, so that the material is fully heated and dried, thereby improving the drying efficiency.

[0022] Compared with the existing technology, this PLA drying and dehumidification equipment has the following advantages:

[0023] 1. The motor drives the shaft to rotate rapidly, and then drives the fixed rod outside the shaft to rotate, which in turn drives the fixed rod to stir the material in the middle of the drying chamber, drives the sliding rod and the push plate to rotate, and then the sliding rod and the push plate will stir the material at the edge of the drying chamber, thereby speeding up its drying progress.

[0024] 2. During the rotation of the fixed rod, the sliding rod and the push plate will tend to move toward the edge of the drying chamber. However, when the first magnet and the second magnet inside the push plate approach each other, the sliding rod and the push plate will be pushed back into the fixed rod, and reciprocate in this way, thereby continuously pushing the material at the edge of the drying chamber to the center of the drying chamber, thereby improving the drying efficiency.

[0025] 3. During the rotation of the shaft, the hot air blower blows hot air into the strip cavity, and enters the second air guide hole through the first air guide hole. The hot air enters multiple exhaust holes through the round hole and the hollow sliding rod, and then is discharged into the interior of the drying chamber to fully heat and dry the material, thereby improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0027] Figure 2 yes Figure 1A magnified view of the structure at A.

[0028] Figure 3 It is a top view of the utility model.

[0029] In the figure, 1, casing; 2, drying chamber; 3, feed port; 4, motor; 5, rotating shaft; 6, fixing rod; 7, sliding rod; 8, push plate; 9, discharge pipe; 10, hot air blower; 11, strip cavity; 12, first air guide hole; 13, sliding cavity; 14, second air guide hole; 15, sliding plug; 16, tension spring; 17, exhaust hole; 18, first magnet; 19, second magnet. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] like Figure 1-Figure 3 As shown, the PLA drying and dehumidifying equipment includes a casing 1, a drying chamber 2 for placing PLA materials is provided inside the casing 1, a feed port 3 is fixedly installed at the upper end of the casing 1, a discharge pipe 9 connected to the drying chamber 2 is fixedly installed at the lower end of the casing 1, a motor 4 and a hot air blower 10 are fixedly installed at the upper end of the casing 1, a stirring mechanism is provided inside the drying chamber 2, and a drying mechanism cooperating with the stirring mechanism and the hot air blower 10 is also provided inside the drying chamber 2.

[0032] The stirring mechanism includes a rotating shaft 5 fixedly mounted at the end of the output shaft of the motor 4. The lower end of the rotating shaft 5 passes through the top wall of the casing 1 and extends to the interior of the drying chamber 2. The rotating shaft 5 is located inside the casing 1 and has two fixed rods 6 fixedly mounted therein.

[0033] In this embodiment, the motor 4 drives the rotating shaft 5 to rotate rapidly, and then drives the fixed rod 6 outside the rotating shaft 5 to rotate, and then drives the fixed rod 6 to stir the material in the middle of the drying chamber 2.

[0034] Sliding rods 7 are slidably mounted on both ends of the fixed rod 6 , and a push plate 8 is fixedly mounted on one end of the sliding rod 7 .

[0035] In this embodiment, the fixed rod 6 drives the sliding rod 7 and the pushing plate 8 to rotate, and then the sliding rod 7 and the pushing plate 8 will stir the materials at the edge of the drying chamber 2, thereby accelerating the drying progress.

[0036] A first magnet 18 is fixedly mounted inside the push plate 8 , and a plurality of second magnets 19 are fixedly mounted on the inner wall of the drying chamber 2 . The first magnet 18 and the second magnet 19 repel each other.

[0037] In this embodiment, during the rotation of the fixed rod 6, the sliding rod 7 and the push plate 8 tend to move toward the edge of the drying chamber 2, but when the first magnet 18 and the second magnet 19 inside the push plate 8 approach each other, the sliding rod 7 and the push plate 8 will be pushed back into the fixed rod 6, and reciprocate in this way, thereby continuously pushing the material at the edge of the drying chamber 2 to the center of the drying chamber 2, thereby improving the drying efficiency.

[0038] A sliding cavity 13 is provided inside the fixed rod 6 , and a sliding plug 15 is slidably installed inside the sliding cavity 13 . The other end of the sliding rod 7 is inserted into the sliding cavity 13 and fixedly connected to the sliding plug 15 . The sliding plug 15 is elastically connected to the inner wall of the sliding cavity 13 via a tension spring 16 .

[0039] In this embodiment, during the movement of the slide bar 7, the tension spring 16 outside the slide bar 7 will also give a reaction force to the slide plug 15, which in turn cooperates with the repulsive force between the magnets to facilitate better reciprocating movement of the slide bar 7 and the push plate 8.

[0040] The drying mechanism includes a strip-shaped cavity 11 opened at the upper end of the casing 1, the lower end of the hot air blower 10 is connected to the interior of the strip-shaped cavity 11, the rotating shaft 5 passes through the strip-shaped cavity 11, the rotating shaft 5 adopts a hollow tube body, the upper end of the rotating shaft 5 is provided with a first air guide hole 12 connected to the strip-shaped cavity 11, and the lower end of the rotating shaft 5 is provided with a second air guide hole 14 respectively connected to two sliding cavities 13, and the two second air guide holes 14 are both connected to the first air guide hole 12.

[0041] In this embodiment, during the rotation of the shaft 5 , the hot air blower 10 blows hot air into the interior of the strip cavity 11 , and enters the second air guide hole 14 through the first air guide hole 12 , thereby facilitating the hot air to enter the interior of the sliding cavity 13 .

[0042] The slide rod 7 is a hollow tube, a circular hole matching the slide rod 7 is provided inside the slide plug 15, and a plurality of exhaust holes 17 are provided outside the push plate 8. The plurality of exhaust holes 17 are connected to the slide cavity 13 through the slide rod 7 and the circular holes inside the slide plug 15.

[0043] In this embodiment, during the movement of the push plate 8, hot air enters the multiple exhaust holes 17 through the circular holes and the hollow slide rod 7, and then is discharged into the interior of the drying chamber 2, so that the material is fully heated and dried, thereby improving the drying efficiency.

[0044] The working principle of the utility model is as follows: the motor 4 drives the rotating shaft 5 to rotate rapidly, and then drives the fixed rod 6 outside the rotating shaft 5 to rotate, thereby driving the fixed rod 6 to stir the material in the middle of the drying chamber 2, and the fixed rod 6 drives the sliding rod 7 and the pushing plate 8 to rotate, and then the sliding rod 7 and the pushing plate 8 will stir the material at the edge of the drying chamber 2, thereby accelerating its drying progress. During the rotation of the fixed rod 6, the sliding rod 7 and the pushing plate 8 will have a tendency to move toward the edge of the drying chamber 2, but when the first magnet 18 and the second magnet 19 inside the pushing plate 8 are close to each other, the sliding rod 7 and the pushing plate 8 will be pushed back to the inside of the fixed rod 6, and reciprocate in this way, thereby continuously stirring the material at the edge of the drying chamber 2. The material is pushed to the center of the drying chamber 2, thereby improving the drying efficiency. During the movement of the slide bar 7, the tension spring 16 outside the slide bar 7 will also give the slide plug 15 a reaction force, which will then cooperate with the repulsive force between the magnets to facilitate the slide bar 7 and the push plate 8 to move back and forth better. During the rotation of the rotating shaft 5, the hot air blower 10 blows hot air into the interior of the strip cavity 11, and enters the second air guide hole 14 through the first air guide hole 12, thereby facilitating the hot air to enter the interior of the slide cavity 13. During the movement of the push plate 8, the hot air enters the multiple exhaust holes 17 through the circular hole and the hollow slide bar 7, and then is discharged into the interior of the drying chamber 2, so that the material is fully heated and dried, thereby improving the drying efficiency.

[0045] In summary, the interior of the drying chamber 2 is stirred and heated by the motor 4 and the hot air blower 10, so as to achieve the function of rapid drying of the material.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A PLA drying and dehumidifying device, comprising a housing (1), characterized in that: A drying chamber (2) for placing PLA materials is provided inside the casing (1); a feed port (3) is fixedly mounted on the upper end of the casing (1); a discharge pipe (9) connected to the drying chamber (2) is fixedly mounted on the lower end of the casing (1); a motor (4) and a hot air blower (10) are fixedly mounted on the upper end of the casing (1); a stirring mechanism is provided inside the drying chamber (2); a drying mechanism cooperating with the stirring mechanism and the hot air blower (10) is also provided inside the drying chamber (2); the stirring mechanism comprises a rotating shaft (5) fixedly mounted on the end of an output shaft of the motor (4); the lower end of the rotating shaft (5) passes through the top wall of the casing (1) and extends to the interior of the drying chamber (2); the rotating shaft (5) is located at the casing (1) Two fixed rods (6) are fixedly installed at the internal position, and sliding rods (7) are slidably installed at both ends of the fixed rods (6). A push plate (8) is fixedly installed at one end of the slide rod (7), and a first magnet (18) is fixedly installed inside the push plate (8). A plurality of second magnets (19) are fixedly installed on the inner wall of the drying chamber (2), and the first magnets (18) and the second magnets (19) repel each other. A sliding cavity (13) is opened inside the fixed rod (6), and a sliding plug (15) is slidably installed inside the sliding cavity (13). The other end of the sliding rod (7) is inserted into the interior of the sliding cavity (13) and fixedly connected to the sliding plug (15), and the sliding plug (15) is elastically connected to the inner wall of the sliding cavity (13) through a tension spring (16).

2. A PLA drying and dehumidification equipment according to claim 1, characterized in that: The drying mechanism comprises a strip-shaped cavity (11) formed at the upper end of the housing (1); the lower end of the hot air blower (10) is connected to the interior of the strip-shaped cavity (11); the rotating shaft (5) passes through the strip-shaped cavity (11); the rotating shaft (5) is a hollow tube; the upper end of the rotating shaft (5) is provided with a first air guide hole (12) connected to the strip-shaped cavity (11); the lower end of the rotating shaft (5) is provided with second air guide holes (14) respectively connected to two sliding cavities (13); the two second air guide holes (14) are both connected to the first air guide hole (12).

3. A PLA drying and dehumidifying equipment according to claim 2, characterized in that: The slide rod (7) is a hollow tube, a circular hole matching the slide rod (7) is provided inside the slide plug (15), and a plurality of exhaust holes (17) are provided outside the push plate (8), wherein the plurality of exhaust holes (17) are connected to the slide cavity (13) through the circular holes inside the slide rod (7) and the slide plug (15).

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