Polyurethane feeding and drying device

Abstract

The utility model provides a polyurethane feed drying device which comprises a machine frame, a heating mechanism and a drying box are installed on the machine frame, the heating mechanism is used for heating the drying box, and a first drying cylinder, a second drying cylinder, a third drying cylinder and a collecting barrel are sequentially arranged in the drying box from top to bottom. Polyurethane particles sequentially pass through the first drying cylinder, the second drying cylinder and the third drying cylinder to be filtered and then enter the collecting barrel, the quality of the polyurethane particles is improved, the processing and using requirements can be better met, the design of the multiple layers of drying cylinders can ensure that the polyurethane particles are evenly heated in the drying process, and the drying efficiency is improved. The drying quality is improved. By means of the stirring mechanism, plastic particles can be prevented from caking in the drying process, it is guaranteed that the particles can be evenly distributed in the drying cylinder, and the drying effect is guaranteed.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of drying devices, in particular to a polyurethane feeding drying device. Background Art

[0002] Thermoplastic polyurethane materials will absorb moisture from the air during storage, making the raw material have a high moisture content. Using this raw material to produce injection molded products will cause apparent quality problems such as bubbles or streaks. Therefore, dehumidification and drying must be carried out before production. Plastic particles have poor heat resistance and are very easy to stick together during the drying process.

[0003] For example, Chinese patent publication number CN209580166U discloses a plastic particle dryer, including a drying cylinder, a fan, and a plastic particle collecting cylinder. The air outlet of the fan is connected to the drying cylinder through a pipeline, the pipeline is provided with a heater, the air outlet of the drying cylinder is connected to the air inlet of the plastic particle collecting cylinder, the air outlet of the plastic particle collecting cylinder is connected to the air inlet of the fan, and a particle filtering device is provided in the drying cylinder.

[0004] The above application removes dust from the hot air after drying the plastic particles, and then reheats it by the fan. However, in the prior art, there is only a single-layer drying cylinder. When drying in the single-layer drying cylinder, due to the slow flow rate of the hot air, the drying time needs to be extended accordingly, which affects the production efficiency and cannot thoroughly dry the plastic particles. At the same time, there is no stirring mechanism in the drying cylinder. In the absence of a stirring mechanism, the plastic particles are prone to form lumps, resulting in insufficient air flow and difficulty in heat transfer, which affects the drying effect. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model:

[0006] The utility model provides a polyurethane feeding and drying device, which is used to solve the technical problems existing in the above-mentioned background technology.

[0007] 2. Technical solution:

[0008] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a polyurethane feeding and drying device, comprising a frame, on which a heating mechanism and a drying box are installed, the heating mechanism is used to heat the drying box, and a first drying cylinder, a second drying cylinder, a third drying cylinder and a collecting bucket are arranged in sequence from top to bottom in the drying box, a first stirring mechanism is arranged in the first drying cylinder, and a first filter hole is opened at the bottom thereof, a second stirring mechanism is arranged in the second drying cylinder, and a second filter hole is opened at the bottom thereof, a third stirring mechanism is arranged in the third drying cylinder, and a third filter hole is opened at the bottom thereof, the first stirring mechanism, the second stirring mechanism and the third stirring mechanism are all driven to rotate by a motor, and the apertures of the first filter hole, the second filter hole and the third filter hole are reduced in sequence.

[0009] Preferably, the heating mechanism comprises a fan, a heating plate is arranged at the air outlet of the fan, an air outlet is arranged on the frame, the air outlet is arranged on a side of the heating plate away from the fan, and the air outlet is connected to the drying box through an exhaust pipe.

[0010] Preferably, the diameters of the first drying cylinder, the second drying cylinder and the third drying cylinder are the same, and their heights decrease successively.

[0011] Preferably, the first stirring mechanism comprises a first rotating shaft, a plurality of first mounting sleeves are equidistantly mounted on the first rotating shaft from top to bottom, and a plurality of first stirring rods are equidistantly mounted on the first mounting sleeves.

[0012] Preferably, the second stirring mechanism includes a second rotating shaft, on which a plurality of second mounting sleeves are equidistantly sleeved from top to bottom, on which a plurality of second stirring rods are equidistantly mounted, and on the side walls of the second stirring rods, dispersion blocks are symmetrically arranged, and the dispersion blocks are wedge-shaped.

[0013] Preferably, the third stirring mechanism comprises a third rotating shaft, a third mounting sleeve is provided on the third rotating shaft, and a plurality of third stirring rods are mounted on the third mounting sleeve at equal distances.

[0014] 3. Beneficial effects:

[0015] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0016] The utility model heats the drying box by means of a heating mechanism, wherein a first drying cylinder, a second drying cylinder, a third drying cylinder and a collecting barrel are sequentially arranged in the drying box from top to bottom, and polyurethane particles are filtered by the first drying cylinder, the second drying cylinder and the third drying cylinder in sequence before entering the collecting barrel, so that the quality of the polyurethane particles is improved and can better meet the processing and use requirements, and the design of the multi-layer drying cylinder can make the hot air flow through each layer of polyurethane particles more evenly, thereby ensuring that the polyurethane particles are evenly heated during the drying process, avoiding the problem of local overheating or over-drying, and improving the drying quality.

[0017] The utility model is provided with a first stirring mechanism in the first drying cylinder, a second stirring mechanism in the second drying cylinder, and a third stirring mechanism in the third drying cylinder. The first stirring mechanism, the second stirring mechanism and the third stirring mechanism are all driven to rotate by a motor. The stirring mechanism can effectively mix and stir the polyurethane particles, so that the heat is more uniform, the heat transfer and absorption are promoted, and the drying efficiency is improved. Through the function of the stirring mechanism, the agglomeration of the plastic particles during the drying process can be avoided, and the particles can be evenly distributed in the drying cylinder to ensure the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the external structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the first drying cylinder, the second drying cylinder, and the third drying cylinder of the utility model;

[0021] Figure 4 It is a schematic structural diagram of the first stirring mechanism, the second stirring mechanism and the third stirring mechanism of the utility model.

[0022] Reference numerals:

[0023] 1. Frame; 2. Heating mechanism; 21. Fan; 22. Heating plate; 23. Air outlet; 24. Exhaust duct; 3. Drying box; 4. First drying cylinder; 41. First stirring mechanism; 411. First rotating shaft; 412. First mounting sleeve; 413. First stirring rod; 42. First filter hole; 5. Second drying cylinder; 51. Second stirring mechanism; 511. Second rotating shaft; 512. Second mounting sleeve; 513. Second stirring rod; 514. Dispersion block; 52. Second filter hole; 6. Third drying cylinder; 61. Third stirring mechanism; 611. Third rotating shaft; 612. Third mounting sleeve; 613. Third stirring rod; 62. Third filter hole; 7. Collecting barrel; 8. Motor. DETAILED DESCRIPTION

[0024] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] It should be noted that the structures not introduced in the present invention are not related to the design points and improvement directions of the present invention, and are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here. Example

[0029] Refer to the attached Figures 1 to 4 A polyurethane feeding and drying device comprises a frame 1, on which a heating mechanism 2 and a drying box 3 are mounted, the heating mechanism 2 is used to heat the drying box 3, and the drying box 3 is provided with a first drying cylinder 4, a second drying cylinder 5, a third drying cylinder 6 and a collecting bucket 7 from top to bottom, the first drying cylinder 4, the second drying cylinder 5 and the third drying cylinder 6 have the same diameter, and their heights decrease successively.

[0030] A first stirring mechanism 41 is provided in the first drying cylinder 4, and a first filter hole 42 is provided at the bottom thereof. A second stirring mechanism 51 is provided in the second drying cylinder 5, and a second filter hole 52 is provided at the bottom thereof. A third stirring mechanism 61 is provided in the third drying cylinder 6, and a third filter hole 62 is provided at the bottom thereof. The first stirring mechanism 41, the second stirring mechanism 51 and the third stirring mechanism 61 are all driven to rotate by the motor 8, and the apertures of the first filter hole 42, the second filter hole 52 and the third filter hole 62 decrease successively.

[0031] The heating mechanism 2 includes a fan 21, a heating plate 22 is arranged at the air outlet of the fan 21, an air outlet 23 is arranged on the frame 1, and the air outlet 23 is arranged on the side of the heating plate 22 away from the fan 21. The air outlet 23 is connected to the drying box 3 through an exhaust pipe 24.

[0032] The first stirring mechanism 41 comprises a first rotating shaft 411 , on which a plurality of first mounting sleeves 412 are sleeved at equal distances from top to bottom, and a plurality of first stirring rods 413 are mounted at equal distances on the first mounting sleeves 412 .

[0033] The second stirring mechanism 51 comprises a second rotating shaft 511, on which a plurality of second mounting sleeves 512 are sleeved at equal distances from top to bottom, on which a plurality of second stirring rods 513 are mounted at equal distances, and on the side walls of the second stirring rods 513, dispersion blocks 514 are symmetrically arranged, and the dispersion blocks 514 are wedge-shaped.

[0034] The third stirring mechanism 61 includes a third rotating shaft 611, on which a third mounting sleeve 612 is sleeved, and on which a plurality of third stirring rods 613 are mounted at equal distances. The first rotating shaft 411, the second rotating shaft 511 and the third rotating shaft 611 are sequentially connected from top to bottom, and the first rotating shaft 411 is connected to the motor shaft of the motor 8.

[0035] Working principle:

[0036] The air is heated by the heating plate 22, and then the hot air is blown to the air outlet 23 by the fan 21, and enters the drying box 3 through the exhaust pipe 24 to heat the drying box 3. The first drying cylinder 4, the second drying cylinder 5, the third drying cylinder 6 and the collecting bucket 7 are arranged in the drying box 3 from top to bottom. The motor 8 drives the first stirring mechanism 41, the second stirring mechanism 51 and the third stirring mechanism 61 to rotate at the same time. After the polyurethane particles enter the first drying cylinder 4, the first rotating shaft 411 drives the first stirring rod 413 to rotate through the first mounting sleeve 412. The first stirring rod 413 is made of metal material, such as stainless steel, copper or aluminum. The first stirring rod 413 absorbs heat and dries the inner layer of polyurethane particles while stirring. After preliminary drying, the polyurethane particles enter the second drying cylinder 5 through the first filter hole 42, and the second rotating shaft 511 drives the second stirring rod 513 to rotate through the second mounting sleeve 512. The second stirring rod 513 is provided with a wedge-shaped dispersion block 514 to separate the bonded polyurethane particles. The separated polyurethane particles enter the third drying cylinder 6 through the second filter hole 52. The third rotating shaft 611 drives the third stirring rod 613 to rotate through the third mounting sleeve 612, and after further drying, enters the collection barrel 7 through the third filter hole 62. The polyurethane particles are filtered by the first drying cylinder 4, the second drying cylinder 5 and the third drying cylinder 6 in sequence, and then enter the collection barrel 7, and the quality of the polyurethane particles is improved.

[0037] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A polyurethane feeding and drying device, comprising a frame (1), characterized in that: A heating mechanism (2) and a drying box (3) are mounted on the frame (1); the heating mechanism (2) is used to heat the drying box (3); a first drying cylinder (4), a second drying cylinder (5), a third drying cylinder (6) and a collecting bucket (7) are sequentially arranged in the drying box (3) from top to bottom; a first stirring mechanism (41) is arranged in the first drying cylinder (4), and a first filter hole (42) is provided at the bottom of the first drying cylinder (4); a second stirring mechanism (51) is arranged in the second drying cylinder (5), and a second filter hole (52) is provided at the bottom of the second drying cylinder (5); a third stirring mechanism (61) is arranged in the third drying cylinder (6), and a third filter hole (62) is provided at the bottom of the third drying cylinder (6); the first stirring mechanism (41), the second stirring mechanism (51) and the third stirring mechanism (61) are all driven to rotate by a motor (8); the apertures of the first filter hole (42), the second filter hole (52) and the third filter hole (62) decrease in sequence.

2. A polyurethane feeding and drying device according to claim 1, characterized in that: The heating mechanism (2) comprises a fan (21), a heating plate (22) being arranged at the air outlet of the fan (21), an air outlet hole (23) being arranged on the frame (1), the air outlet hole (23) being arranged on a side of the heating plate (22) away from the fan (21), and the air outlet hole (23) being connected to the drying box (3) via an exhaust pipe (24).

3. A polyurethane feeding and drying device according to claim 1, characterized in that: The first drying cylinder (4), the second drying cylinder (5) and the third drying cylinder (6) have the same diameter, and their heights decrease successively.

4. A polyurethane feeding and drying device according to claim 1, characterized in that: The first stirring mechanism (41) comprises a first rotating shaft (411), a plurality of first mounting sleeves (412) being sleeved on the first rotating shaft (411) at equal distances from top to bottom, and a plurality of first stirring rods (413) being mounted on the first mounting sleeves (412) at equal distances.

5. The polyurethane feeding and drying device according to claim 1, characterized in that: The second stirring mechanism (51) comprises a second rotating shaft (511), a plurality of second mounting sleeves (512) being sleeved on the second rotating shaft (511) at equal distances from top to bottom, a plurality of second stirring rods (513) being mounted on the second mounting sleeves (512) at equal distances, and a dispersion block (514) being symmetrically arranged on the side wall of the second stirring rod (513), the dispersion block (514) being wedge-shaped.

6. A polyurethane feeding and drying device according to claim 1, characterized in that: The third stirring mechanism (61) comprises a third rotating shaft (611), a third mounting sleeve (612) is sleeved on the third rotating shaft (611), and a plurality of third stirring rods (613) are mounted on the third mounting sleeve (612) at equal distances.

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