Raw material pretreatment equipment for TPU granulation

Abstract

The utility model relates to raw material pretreatment equipment for TPU (thermoplastic polyurethane) granulation, which belongs to the technical field of TPU granulation equipment and comprises a filter box and a drying preheating box, the filter box is communicated with the drying preheating box through a conveying hopper, a cylinder is fixedly mounted at the upper end of the filter box, and a feeding hopper is fixedly mounted on one side of the upper end of the cylinder. A rotating rod with a stirring plate mounted on the outer side is rotationally mounted in the cylinder, a discharging hole is formed in the bottom of the cylinder, a filtering net plate is fixedly mounted in the filtering box, an oscillation assembly is mounted on the upper side of the filtering net plate, and a stirring frame driven by a second motor is rotationally mounted in the drying preheating box; a drying and preheating assembly is installed on the inner wall of the drying and preheating box, hot air is evenly sprayed into the drying and preheating box, the drying and preheating time of raw materials is shortened, and therefore the drying and preheating efficiency is improved, a filter screen plate can be periodically oscillated through a T-shaped plate, meshes are prevented from being blocked after the filter screen plate is used for a long time, and the service life of the filter screen plate is prolonged. The screening effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of TPU granulation equipment, in particular to a raw material pretreatment equipment for TPU granulation. Background Art

[0002] TPU is a thermoplastic polyurethane elastomer rubber, which is mainly divided into polyester type and polyether type. It has a wide hardness range, is wear-resistant, oil-resistant, transparent, and has good elasticity. It is widely used in daily necessities, sporting goods, toys, decorative materials and other fields. Halogen-free flame-retardant TPU can also replace soft PVC to meet the environmental protection requirements of more and more fields. It is a mature environmentally friendly material. The raw materials used for TPU polymerization granulation need to be pretreated before granulation to filter out impurities in the raw materials and pre-heat them. TPU granulation raw material pretreatment equipment is required to ensure that the quality and state of the raw materials can meet the granulation standards.

[0003] As shown in the announcement number: CN219427201U, a raw material pretreatment equipment for TPU polymerization granulation, includes a base, one end of the upper end surface of the base is provided with a drying preheating mechanism through a bracket, and the other end of the upper end surface of the base is provided with a screening mechanism through a bracket; the utility model has a simple structure and a reasonable design. By heating with air supply and stirring throughout the process, the contact between the surface of the raw material and the hot air is more sufficient, thereby avoiding the agglomeration of the raw material during the heating process due to long-term local high temperature or the inability of water vapor to evaporate quickly, and the heating effect is better and the efficiency is higher. At the same time, compared with the traditional filtering method, the screening mechanism allows the raw materials to enter in layers and batches, avoiding the large amount of raw materials stacking up, which leads to the impurities in the upper raw materials cannot be effectively filtered, and the wind energy used in this mechanism is introduced from the drying preheating mechanism, thereby avoiding a large amount of energy consumption, responding to the energy-saving and emission reduction policy, and improving energy utilization.

[0004] When the common TPU granulation raw material pretreatment equipment is in use, although the raw materials can be filtered through the filter screen and heated through the drying and preheating mechanism, the mesh of the filter screen is prone to clogging when used for a long time, thus affecting the screening effect. In addition, when the raw materials are dried and preheated, it is difficult to evenly input hot air into the heating box, resulting in low drying and preheating efficiency of the raw materials, and it takes a long time to fully heat and dry the raw materials. Utility Model Content

[0005] In order to overcome the technical defects of the prior art, the utility model provides a raw material pretreatment device for TPU granulation, which can prevent the mesh of the filter plate from being blocked after long-term use and improve the drying preheating efficiency of the raw materials.

[0006] The technical solution adopted by the utility model is: it includes a filter box and a drying preheating box, the filter box is connected with the drying preheating box through a feeding hopper, a cylinder is fixedly installed on the upper end of the filter box, a feeding hopper is fixedly installed on one side of the upper end of the cylinder, a rotating rod with a stirring plate installed on the outer side is rotatably installed inside the cylinder, a discharge hole is opened at the bottom of the cylinder, a filter screen plate is fixedly installed inside the filter box, an oscillation component is installed on the upper side of the filter screen plate, the oscillation component is linked with the rotating rod, a stirring frame driven by a second motor is rotatably installed inside the drying preheating box, and the drying preheating A drying and preheating component is installed on the inner wall of the heating box, and a collecting box is plugged into one end of the filter box. When in use, the collecting box is used to collect impurities filtered out by the filter screen. The drying and preheating component is used to dry and preheat the raw materials. The second motor is fixedly installed on the upper end of the drying and preheating box. The stirring frame is used to stir the raw materials. The oscillation component is used to periodically oscillate the filter screen to prevent the mesh of the filter screen from being blocked. The stirring plate is used to break up clumped raw materials to prevent the raw materials from sticking to each other. The size of the discharge hole is larger than the size of the raw material to facilitate the discharge of the raw materials.

[0007] Preferably, in order to enable the rotating rod to rotate, a first motor is fixedly mounted on the upper end of the filter box, and an output end of the first motor is fixedly connected to one end of the rotating rod.

[0008] Preferably, in order to enable the rotating shaft to rotate, the oscillation assembly includes a rotating shaft, the rotating shaft is rotatably installed inside the filter box, a worm gear is fixedly installed at the middle position of the outer side of the rotating shaft, a worm is fixedly installed at one end of the rotating rod, the worm is meshed with the worm wheel, and the worm is used to drive the worm gear.

[0009] Preferably, in order to enable the T-shaped plate to move up and down, square plates are fixedly installed on the inner walls on both sides of the filter box, a T-shaped plate is slidably installed inside one end of the square plate, a waist-shaped hole is opened at one end of the T-shaped plate, and a sliding block is clamped in the waist-shaped hole.

[0010] Preferably, in order to enable the T-shaped plate to move reciprocatingly up and down, rotating plates are fixedly mounted on both ends of the rotating shaft, and one end of the rotating plate is rotatably connected to the sliding block.

[0011] Preferably, in order to evenly spray hot air into the drying preheating box, the drying preheating assembly includes an air outlet plate with an air storage cavity inside, the interior of the drying preheating box is provided with mounting grooves in a circumferential array, the air outlet plate is fixedly installed in the mounting grooves, a circular cavity is provided at the bottom of the drying preheating box, one end of the air outlet plate and the bottom of the drying preheating box are provided with air outlet holes, and the air storage cavity and the circular cavity are both connected to the air outlet holes.

[0012] Preferably, in order to transport hot air into the air storage cavity, the air storage cavity and the circular cavity are connected through a pipe, and the size of the air outlet is smaller than the size of the raw material to prevent the raw material from falling into the air storage cavity and the circular cavity through the air outlet.

[0013] Preferably, in order to transport hot air into the circular cavity, one side of the drying preheating box is connected to a hot air blower through an air supply pipe, and one end of the air supply pipe is connected to the circular cavity.

[0014] The beneficial effects of the utility model are as follows: when the utility model is in use, the T-shaped plate is moved back and forth in a straight line so that the T-shaped plate causes the filter screen plate to perform periodic oscillations, thereby preventing the filter screen plate from being blocked after long-term use, thereby improving the screening effect, and can also uniformly spray hot air into the drying preheating box to reduce the drying preheating time of the raw materials, thereby improving the drying preheating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the cylinder of the utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure of the oscillation component of the utility model.

[0019] Figure 5 This is a schematic diagram of the connection structure of the drying and preheating components of the utility model.

[0020] Figure 6 It is a schematic diagram of the connection structure between the circular cavity and the air storage cavity of the utility model.

[0021] Explanation of the accompanying drawings: In the figure: 1, filter box; 2, drying preheating box; 3, feed hopper; 4, cylinder; 5, feed hopper; 6, rotating rod; 7, discharge hole; 8, filter screen; 9, oscillation assembly; 901, rotating shaft; 902, worm gear; 903, worm; 904, T-shaped plate; 905, waist-shaped hole; 906, sliding block; 907, rotating plate; 10, second motor; 11, stirring frame; 12, drying preheating assembly; 1201, air outlet plate; 1202, air storage cavity; 1203, mounting groove; 1204, circular cavity; 1205, air outlet; 1206, hot air blower; 13, collecting box; 14, first motor. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-Figure 6 As shown, this embodiment provides a raw material pretreatment device for TPU granulation, including a filter box 1 and a drying preheating box 2, the filter box 1 and the drying preheating box 2 are connected through a feed hopper 3, a cylinder 4 is fixedly installed on the upper end of the filter box 1, a feed hopper 5 is fixedly installed on one side of the upper end of the cylinder 4, a rotating rod 6 with a stirring plate installed on the outside is rotatably installed inside the cylinder 4, and a discharge hole 7 is opened at the bottom of the cylinder 4, a filter screen plate 8 is fixedly installed inside the filter box 1, an oscillation component 9 is installed on the upper side of the filter screen plate 8, and the oscillation component 9 is linked to the rotating rod 6, a stirring frame 11 driven by a second motor 10 is rotatably installed inside the drying preheating box 2, a drying preheating component 12 is installed on the inner wall of the drying preheating box 2, a collecting box 13 is plugged into one end of the filter box 1, a first motor 14 is fixedly installed on the upper end of the filter box 1, and the output end of the first motor 14 is fixed to one end of the rotating rod 6 When in use, first input the raw material into the cylinder 4 through the feed hopper 5, then start the first motor 14 to drive the rotating rod 6 to rotate, separate the agglomerated raw materials through the stirring plate, and the separated raw materials are transported to the filter box 1 through the discharge hole 7, and then filtered through the filter screen plate 8. At the same time, the rotating rod 6 drives the oscillation component 9 to periodically oscillate the filter screen plate 8 to prevent the mesh of the filter screen plate 8 from being blocked after long-term use, thereby improving the screening effect. The screened impurities are collected through the collecting box 13, and the screened raw materials are transported to the drying and preheating box 2 through the feeding hopper 3, and then the drying and preheating component 12 evenly sprays hot air into the drying and preheating box 2 to dry and preheat the raw materials, thereby reducing the time of drying and preheating of the raw materials, thereby improving the drying and preheating efficiency. At the same time, start the second motor 10 to drive the stirring frame 11 to stir the raw materials.

[0024] like Figure 4As shown, the oscillation component 9 includes a rotating shaft 901, which is rotatably mounted inside the filter box 1, a worm gear 902 is fixedly mounted at the middle position outside the rotating shaft 901, a worm 903 is fixedly mounted at one end of the rotating rod 6, the worm 903 is meshed with the worm gear 902, square plates are fixedly mounted on the inner walls of both sides of the filter box 1, a T-shaped plate 904 is slidably mounted inside one end of the square plate, a waist-shaped hole 905 is provided at one end of the T-shaped plate 904, a sliding block 906 is clamped in the waist-shaped hole 905, rotating plates 907 are fixedly mounted at both ends of the rotating shaft 901, one end of the rotating plate 907 is rotatably connected to the sliding block 906, when in use, the rotating rod 6 drives the worm 903 to rotate, and the rotating shaft 901 is driven to rotate by the worm gear 902, and the rotating plates 907 on both sides rotate accordingly, so that the sliding block 906 moves in the waist-shaped hole 905, so that the T-shaped plate 904 moves linearly back and forth, and the filter screen plate 8 is periodically oscillated.

[0025] like Figure 5 and Figure 6 As shown, the drying and preheating assembly 12 includes an air outlet plate 1201 with an air storage cavity 1202 therein, a mounting groove 1203 is formed in a circumferential array inside the drying and preheating box 2, the air outlet plate 1201 is fixedly installed in the mounting groove 1203, a circular cavity 1204 is formed at the bottom of the drying and preheating box 2, an air outlet hole 1205 is formed at one end of the air outlet plate 1201 and at the bottom of the drying and preheating box 2, the air storage cavity 1202 and the circular cavity 1204 are both connected to the air outlet hole 1205, the air storage cavity 1202 and the circular cavity 1204 are connected through a pipeline, the size of the air outlet hole 1205 is smaller than the size of the raw material, and one side of the drying and preheating box 2 is connected to the air outlet hole 1205. A hot air blower 1206 is connected through an air pipe, and one end of the air pipe is connected to the circular cavity 1204. When in use, the hot air blower 1206 is started first, and the generated hot air is input into the circular cavity 1204 through the air pipe. A part of it is directly discharged through the air outlet 1205, and the other part is transported to the circular cavity 1204 through a pipeline and then discharged through the air outlet 1205, thereby realizing uniform spraying of hot air into the drying preheating box 2. The size of the air outlet 1205 is smaller than the size of the raw material, and the raw material will not fall into the circular cavity 1204 and the air storage cavity 1202. At the same time, the second motor 10 is started to stir the raw material through the stirring frame 11.

[0026] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A raw material pretreatment device for TPU granulation, comprising a filter box (1) and a drying preheating box (2), wherein the filter box (1) is connected to the drying preheating box (2) via a feed hopper (3), characterized in that: A cylinder (4) is fixedly mounted on the upper end of the filter box (1), a feed hopper (5) is fixedly mounted on one side of the upper end of the cylinder (4), a rotating rod (6) with a stirring plate mounted on the outer side is rotatably mounted inside the cylinder (4), a discharge hole (7) is provided at the bottom of the cylinder (4), a filter screen (8) is fixedly mounted inside the filter box (1), an oscillating assembly (9) is mounted on the upper side of the filter screen (8), the oscillating assembly (9) is linked to the rotating rod (6), a stirring frame (11) driven by a second motor (10) is rotatably mounted inside the drying and preheating box (2), a drying and preheating assembly (12) is mounted on the inner wall of the drying and preheating box (2), and a collecting box (13) is plugged into one end of the filter box (1).

2. The TPU granulation raw material pretreatment equipment according to claim 1, characterized in that: A first motor (14) is fixedly mounted on the upper end of the filter box (1), and an output end of the first motor (14) is fixedly connected to one end of the rotating rod (6).

3. The TPU granulation raw material pretreatment equipment according to claim 1, characterized in that: The oscillating assembly (9) comprises a rotating shaft (901), the rotating shaft (901) being rotatably mounted inside the filter box (1), a worm wheel (902) being fixedly mounted at a middle position outside the rotating shaft (901), a worm (903) being fixedly mounted at one end of the rotating rod (6), and the worm (903) being meshed with the worm wheel (902).

4. The TPU granulation raw material pretreatment equipment according to claim 3, characterized in that: A square plate is fixedly mounted on the inner walls of both sides of the filter box (1), a T-shaped plate (904) is slidably mounted inside one end of the square plate, a waist-shaped hole (905) is opened at one end of the T-shaped plate (904), and a sliding block (906) is clamped in the waist-shaped hole (905).

5. The TPU granulation raw material pretreatment equipment according to claim 4, characterized in that: Rotating plates (907) are fixedly mounted at both ends of the rotating shaft (901), and one end of the rotating plate (907) is rotatably connected to the sliding block (906).

6. The TPU granulation raw material pretreatment equipment according to claim 1, characterized in that: The drying preheating assembly (12) comprises an air outlet plate (1201) with an air storage cavity (1202) therein; the drying preheating box (2) has mounting grooves (1203) arranged in a circular array therein; the air outlet plate (1201) is fixedly mounted in the mounting grooves (1203); a circular cavity (1204) is arranged at the bottom of the drying preheating box (2); an air outlet hole (1205) is arranged at one end of the air outlet plate (1201) and at the bottom of the drying preheating box (2); and the air storage cavity (1202) and the circular cavity (1204) are both in communication with the air outlet hole (1205).

7. The TPU granulation raw material pretreatment equipment according to claim 6, characterized in that: The gas storage cavity (1202) is connected to the circular cavity (1204) via a pipeline, and the size of the gas outlet hole (1205) is smaller than the size of the raw material.

8. The TPU granulation raw material pretreatment equipment according to claim 7, characterized in that: One side of the drying preheating box (2) is connected to a hot air blower (1206) via an air supply pipe, and one end of the air supply pipe is in communication with the circular cavity (1204).

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