Tapered heating stock bin for thermoplastic polyurethane elastomer particles

Abstract

The utility model discloses a conical heating stock bin for thermoplastic polyurethane elastomer particles. The conical heating stock bin comprises a bin body, the bin body is of a double-layer structure, and the outer layer is an aluminum foil heat preservation cotton layer. An opening and a cover body are arranged at the upper end of the bin body; one side of the lower end of the bin body is connected with a discharge pipe; a feeding assembly is arranged on one side of the bin body, and a drying assembly is arranged on the other side. A mixing and stirring assembly is arranged in the bin body; a mounting base is arranged below the bin body, and a bearing is arranged in the mounting base. The bearings used for supporting the auxiliary main shaft to rotate are arranged on the outer side of the bin body, so that the bearings can be lubricated, maintained and replaced from the outer lower end of the bin body without entering the bin body when needing to be lubricated, maintained and replaced; and the polyurethane elastomer particles can be turned and stirred in multiple directions through the multi-direction mixing and stirring assembly, so that the mixing uniformity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elastomer processing, in particular to a conical heating silo for thermoplastic polyurethane elastomer particles. Background Art

[0002] Thermoplastic polyurethane elastomer, also known as TPU, is mainly divided into polyester type and polyether type. It has a wide hardness range, wear resistance, oil resistance, transparency, and 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.

[0003] The so-called elastomer refers to a polymer material with a glass transition temperature lower than room temperature, elongation at break>50%, and good recovery after the external force is removed. Polyurethane elastomer is a relatively special category of elastomers. It has a wide hardness range and a wide performance range, so it is a polymer material between rubber and plastic.

[0004] In the prior art, a bearing is provided at the lower end of the silo to assist the main shaft in rotating, thereby reducing the friction of the main shaft in rotating. However, there are many inconveniences in providing the bearing at the bottom. First, the bearing needs to be lubricated with grease from time to time, and the silo is tall, so it is difficult to enter the silo to maintain or remove the bearing. In addition, the added grease will come into contact with the raw materials, affecting their performance, so there is room for improvement. Utility Model Content

[0005] The utility model aims to solve the technical problems existing in the prior art that the bearings arranged at the bottom of the silo need to be maintained unchanged and the butter may contact with the raw materials, and provides a conical heating silo for thermoplastic polyurethane elastomer particles.

[0006] In order to solve the above technical problems, the utility model provides a technical solution: a thermoplastic polyurethane elastomer particle conical heating silo, comprising a silo body, the upper half of which is cylindrical and the lower half is inverted conical; the silo body is a double-layer structure, the outer layer of which is an aluminum foil insulation cotton layer; an opening is provided at the upper end of the silo body, and a cover is provided outside the opening; a discharge pipe is connected to one side of the lower end of the silo body; a feeding assembly is provided on one side of the silo body, and a drying assembly is provided on the other side; a mixing and stirring assembly is provided inside the silo body;

[0007] The mixing and stirring assembly comprises a through slot provided at the middle end of the cover body, a turntable is rotatably provided in the through slot, a motor and a frequency converter connected to the motor are provided at the lower end of the turntable; a main shaft is provided at the output end of the motor, a plurality of fixing rings are provided on the outer side of the main shaft, and stirring rods are hingedly provided on both sides of the fixing rings; the stirring rods have different lengths, and the ends are in contact with the inner side of the bin body; an inverted U-shaped linkage frame is provided on the outer side of the main shaft and is higher than the fixing ring for sliding, the linkage frame is slidably connected to the plurality of stirring rods, an L-shaped support rod is provided at the upper end of the linkage frame, and an electric push rod is provided at the upper end of the support rod extending out of the turntable;

[0008] A through hole capable of accommodating the main shaft is provided at the lower end of the warehouse body, a mounting seat is provided below the warehouse body, and a bearing capable of being connected to the main shaft is provided in the mounting seat.

[0009] Preferably, a circular bracket is provided on the outside of the warehouse body, and a plurality of supporting legs are provided at the lower end of the circular bracket.

[0010] Preferably, the feeding assembly comprises a feeding pipe, a feeding fan is provided at one end of the feeding pipe away from the bin body, and a feeding hopper is provided on the feeding pipe and connected to the feeding fan.

[0011] Preferably, the drying component comprises a heating tube, and a fan is provided at the end of the heating tube.

[0012] Preferably, a staircase is provided on the outside of the warehouse body.

[0013] Preferably, a limiting ring is provided on the outer side of the turntable, and a limiting groove rotatably connected to the limiting ring is provided on the inner side of the through groove.

[0014] Preferably, the linkage frame is provided with a plurality of limit buttons with a T-shaped cross section, and the stirring rods are provided with rectangular sliding grooves that can be slidably connected to the limit buttons.

[0015] The advantages of the utility model compared with the prior art are:

[0016] 1. The bearing used to support the rotation of the auxiliary spindle is arranged outside the warehouse body, so that when the bearing needs lubrication, maintenance, or replacement, it can be achieved from the lower end of the warehouse body without entering the warehouse body;

[0017] 2. The multi-directional mixing and stirring components can stir the polyurethane elastomer particles in multiple directions, avoiding the phenomenon that the particles cannot be separated due to adhesion caused by a single stirring direction, and improving the mixing uniformity;

[0018] 3. Aluminum foil insulation cotton is installed on the outside of the silo to keep the raw materials in the silo warm and avoid unstable melt after TPU products mature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0021] Figure 3 It is a partial structural schematic diagram of the mixing and stirring component of the utility model.

[0022] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0023] Figure 5 It is a schematic diagram of the through slot and turntable structure of the utility model.

[0024] Figure 6 It is a schematic diagram of the bottom of the warehouse body of the utility model.

[0025] As shown in the figure: 1. Bin body, 2. Round bracket, 3. Support leg, 4. Feeding pipe, 5. Feeding fan, 6. Feeding hopper, 7. Heating tube, 8. Fan, 9. Ladder, 10. Aluminum foil insulation cotton layer, 11. Cover, 12. Discharge pipe, 13. Through slot, 14. Turntable, 15. Limiting ring, 16. Limiting slot, 17. Motor, 18. Inverter, 19. Spindle, 20. Fixed ring, 21. Stirring rod, 22. Linkage frame, 23. Support rod, 24. Electric push rod, 25. Mounting seat, 26. Bearing, 27. Limiting button, 28. Rectangular slide. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Embodiment 1, in combination with the attached Figure 1 A conical heating silo for thermoplastic polyurethane elastomer particles includes a silo body 1. The upper part of the silo body 1 is cylindrical, and the lower part is an inverted cone. The cone is convenient for discharging: a circular bracket 2 is provided on the outside of the silo body 1, and a plurality of supporting legs 3 are provided at the lower end of the circular bracket 2 to support the silo body 1; a step ladder 9 is provided on the outside of the silo body 1 to facilitate entering the interior of the silo body 1 for maintenance work.

[0028] Combined with Figure 2 The silo body 1 is a double-layer structure, the outer layer is an aluminum foil insulation cotton layer 10, which is used to keep the raw materials in the silo body warm and avoid the phenomenon of unstable melt after the TPU product is matured; an opening is provided at the upper end of the silo body 1, and a cover body 11 is provided outside the opening; a discharge pipe 12 is connected to one side of the lower end of the silo body 1.

[0029] Combined with Figure 1A feeding assembly is provided on one side of the silo body 1, and the feeding assembly includes a feeding pipe 4. A feeding fan 5 is provided at one end of the feeding pipe 4 away from the silo body 1, and a feeding hopper 6 is provided on the feeding pipe 4 and close to the feeding fan 5; the particles processed on the production line directly fall into the feeding hopper 6 through the vibrating screen, reducing the exposure of the raw materials to the external environment.

[0030] Combined with Figure 2 A drying assembly is provided on the other side of the bin body 1; the drying assembly includes a heating tube 7, and a fan 8 is provided at the end of the heating tube 7; the wind blown in by the fan 8 is heated by the heating tube 7 and then transported into the bin body 1.

[0031] Combined with Figure 1 , 2 5. A mixing and stirring assembly is provided inside the bin body 1; the mixing and stirring assembly includes a through groove 13 provided at the middle end of the cover body 11, a turntable 14 is rotatably provided in the through groove 13, a limiting ring 15 is provided on the outer side of the turntable 14, and a limiting groove 16 rotatably connected to the limiting ring 15 is provided on the inner side of the through groove 13; the turntable 14 can rotate in the through groove 13 without falling out through the limiting ring 15 and the limiting groove 16.

[0032] Combined with Figure 2 , 4 The lower end of the turntable 14 is provided with a motor 17 and a frequency converter 18 connected to the motor 17. The frequency converter 18 can adjust the output speed of the motor 17. Because the TPU material is an elastomer, which contains colloid, the motor 17 will generate heat when driving the spindle 19 at a high speed, causing the colloid to melt, agglomerate, or even lock the spindle. The use of a frequency converter can avoid the above situation and save electricity; the output end of the motor 17 is provided with a spindle 19, and the outer side of the spindle 19 is provided with a plurality of fixing rings 20, and both sides of the fixing ring 20 are hinged with stirring rods 21; the lengths of the stirring rods 21 are different, and the ends are in contact with the inner side of the bin body 1, combined with the attached Figure 2 The end of the stirring rod 21 is fan-shaped to increase the contact area with the raw material.

[0033] Combined with Figure 2 , 3 4. An inverted U-shaped linkage frame 22 is slidably provided outside the main shaft 19 and higher than the fixed ring 20. The linkage frame 22 is slidably connected to a plurality of stirring rods 20. An L-shaped support rod 23 is provided at the upper end of the linkage frame 22. An electric push rod 24 is provided at the upper end of the support rod 23 extending out of the turntable 14; the electric push rod 24 drives the linkage frame 22 to move up and down through the support rod 23, thereby indirectly driving the stirring rod 20 to move up and down while rotating, thereby realizing multi-directional stirring.

[0034] Combined with Figure 3The linkage frame 22 is provided with a plurality of limit buttons 27 with a T-shaped cross-section, and the stirring rod 20 is provided with a rectangular slide groove 28 that can be slidably connected with the limit button 27. The limit button 27 slides in the rectangular slide groove 28, so that when the linkage frame 22 moves up and down, the stirring rod 21 follows the movement.

[0035] Combined with Figure 6 A through hole capable of accommodating the main shaft 19 is provided at the lower end of the bin body 1, a mounting seat 25 is provided under the bin body 1, a bearing 26 capable of being connected to the main shaft 19 is provided in the mounting seat 25, and the bearing 26 is arranged on the outside of the bin body 1 for easy maintenance, and the butter used for lubrication will not contaminate the raw materials.

[0036] The working principle of the utility model is as follows: when in use, the TPU particles on the production line enter the feeding pipe 4 through the vibrating screen and the feeding hopper 6, and are transported to the silo 1 through the feeding fan 5. The silo 1 is provided with an aluminum foil insulation cotton layer 10 for heat preservation of the raw materials;

[0037] The motor 17 is connected to a frequency converter 18, which can adjust the rotation speed to prevent the raw materials from being overheated due to high-speed rotation, causing the colloid to melt, agglomerate, or even lock the main shaft; the motor 17 drives the main shaft 19 to rotate, thereby driving a number of stirring rods 21 to rotate and stir; at this time, the electric push rod 24 drives the support rod 23 and the linkage frame 22 to move up and down, and at this time, the limit button 27 on the linkage frame 22 slides in the rectangular slide groove 28 on the stirring rod 21, so that the stirring rod 21 moves in an arc on the linkage frame 22, thereby realizing multi-directional movement of the stirring rod 21, and stirring is more sufficient and uniform.

[0038] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A conical heating silo for thermoplastic polyurethane elastomer particles, comprising a silo body (1), wherein the upper half of the silo body (1) is cylindrical and the lower half is inverted conical; characterized in that: The silo (1) is a double-layer structure, the outer layer of which is an aluminum foil heat-insulating cotton layer (10); an opening is provided at the upper end of the silo (1), and a cover (11) is provided outside the opening; a discharge pipe (12) is connected to one side of the lower end of the silo (1); a loading component is provided on one side of the silo (1), and a drying component is provided on the other side; a mixing and stirring component is provided inside the silo (1); The mixing and stirring assembly comprises a through slot (13) provided at the middle end of the cover body (11), a turntable (14) rotatably provided in the through slot (13), a motor (17) and a frequency converter (18) connected to the motor (17) provided at the lower end of the turntable (14); a main shaft (19) is provided at the output end of the motor (17), a plurality of fixing rings (20) are provided on the outer side of the main shaft (19), and stirring rods (21) are hingedly provided on both sides of the fixing ring (20); the stirring rods (21) have different lengths, and their ends are in contact with the inner side of the bin body (1); an inverted U-shaped linkage frame (22) is slidably provided on the outer side of the main shaft (19) and higher than the fixing ring (20), the linkage frame (22) is slidably connected to the plurality of stirring rods (21), an L-shaped support rod (23) is provided at the upper end of the linkage frame (22), and an electric push rod (24) is provided at the upper end of the support rod (23) extending out of the turntable (14); A through hole capable of accommodating a main shaft (19) is provided at the lower end of the warehouse body (1), a mounting seat (25) is provided below the warehouse body (1), and a bearing (26) capable of being connected to the main shaft (19) is provided in the mounting seat (25).

2. A conical heating silo for thermoplastic polyurethane elastomer particles according to claim 1, characterized in that: A circular bracket (2) is provided on the outside of the warehouse body (1), and a plurality of supporting legs (3) are provided at the lower end of the circular bracket (2).

3. The conical heating silo for thermoplastic polyurethane elastomer particles according to claim 1, characterized in that: The feeding assembly comprises a feeding pipe (4), a feeding fan (5) is provided at one end of the feeding pipe (4) away from the bin body (1), and a feeding hopper (6) is provided on the feeding pipe (4) and close to the feeding fan (5).

4. The conical heating silo for thermoplastic polyurethane elastomer particles according to claim 1, characterized in that: The drying component comprises a heating tube (7), and a fan (8) is provided at the end of the heating tube (7).

5. The conical heating silo for thermoplastic polyurethane elastomer particles according to claim 1, characterized in that: A step ladder (9) is provided on the outside of the warehouse body (1).

6. The conical heating silo for thermoplastic polyurethane elastomer particles according to claim 1, characterized in that: A limiting ring (15) is provided on the outer side of the rotating disk (14), and a limiting groove (16) capable of being rotatably connected to the limiting ring (15) is provided on the inner side of the through groove (13).

7. The conical heating silo for thermoplastic polyurethane elastomer particles according to claim 1, characterized in that: The linkage frame (22) is provided with a plurality of limit buttons (27) with a T-shaped cross section, and the stirring rods (21) are provided with rectangular sliding grooves (28) that can be slidably connected to the limit buttons (27).

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