Rapid mixing device for TPU material processing

Abstract

The utility model discloses a rapid mixing device for TPU (thermoplastic polyurethane) material processing, and relates to the technical field of TPU material processing devices. The device comprises a device frame, wherein an inner cavity of the device frame is movably connected with a mixing barrel; a mixing assembly is arranged on the surface of the mixing barrel and comprises a fluted disc fixedly connected to one side of the surface of the mixing barrel, a rotating rod movably connected to one side of the inner top of the device frame and a gear fixedly connected to one side of the surface of the rotating rod, and the gear is meshed with the fluted disc. Through the reverse rotation design of the mixing barrel and the transmission rod, a high-strength shear flow field is formed, the mixing uniformity of TPU materials is remarkably improved, meanwhile, the cooling assembly conveys cold air into the transmission rod through the rotary joint, the cold air is dynamically sprayed to a mixing area through the air spraying opening, heat generated by mechanical shearing is directly reduced, and the heat efficiency is improved. The TPU is effectively prevented from being softened and adhered to the inner wall of the mixing barrel or the stirring part due to high temperature, so that the mixing efficiency and the product quality are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of TPU material processing equipment, and in particular relates to a rapid mixing device for TPU material processing. Background Technology

[0002] TPU (thermoplastic polyurethane) is a thermoplastic plastic with good elasticity, abrasion resistance, oil resistance and aging resistance. It is widely used in many industries. It is composed of polyurethane segments and alternating soft and hard segments. The soft segments are usually polyether or polyester, while the hard segments are polyurethane obtained by reacting isocyanate and polyol. The unique structure of TPU gives it excellent mechanical properties and chemical stability, as well as good thermoplasticity, and it can be melt-processed into shape.

[0003] In the prior art, Chinese Patent Publication No. CN111516169A discloses a mixing device for processing hardware and plastic products, including a mixing and processing box. Multiple fixed legs are fixedly installed at the bottom of the mixing and processing box, and support pads are fixedly installed on the lower outer surface of the fixed legs. A discharge pipe is fixedly installed on the lower surface of the mixing and processing box, located inside the fixed legs, and a central pipe is fixedly installed on the lower surface of the discharge pipe. The mixing device for processing hardware and plastic products described in this invention can simultaneously drive the reverse-rotating blades to rotate in a different direction, performing reverse stirring of the materials inside the device. This ensures that the materials are more fully in contact with the mixing blades, preventing some materials from failing to mix and improving the mixing effect. It can also drive the crushing blades to rotate rapidly, thereby crushing and cutting the materials fed into the device, maintaining a uniform particle size and improving the quality of the mixed materials.

[0004] However, the above-mentioned device still has the following problems in the implementation process: Although the above-mentioned mixing and processing device effectively mixes and stirs the raw materials by setting multiple rotating structures, there are still some technical problems. As the multiple forward and reverse rotating structures inside the device generate a certain rotational shear force during the mixing process, the device will generate a lot of heat under the action of this force, thereby increasing the temperature inside the mixing and processing box. As the temperature rises, the physical properties of some raw materials may change, causing them to stick or accumulate inside the box. This sticking phenomenon not only affects the smooth mixing of raw materials, but may also reduce the mixing efficiency, thereby affecting the final product quality.

[0005] To address these issues, we provide a rapid mixing device for TPU material processing. Utility Model Content

[0006] The purpose of this invention is to provide a rapid mixing device for TPU material processing. By combining the mixing component and the cooling component, it solves the problem in the prior art of mixing devices for processing hardware and plastic products where the built-in mixing and stirring structure generates a large amount of heat, causing raw materials to stick together and affecting mixing efficiency and quality.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a rapid mixing device for TPU material processing, comprising a device frame, with a mixing cylinder movably connected to the inner cavity of the device frame; a mixing assembly is provided on the surface of the mixing cylinder, the mixing assembly including a geared disc fixedly connected to one side of the mixing cylinder surface, a rotating rod movably connected to one side of the top of the device frame, a gear fixedly connected to one side of the rotating rod surface, the gear meshing with the geared disc, and a transmission rod movably connected to the inner cavity of the mixing cylinder, the mixing assembly being used to reduce the heat generated inside the mixing cylinder due to mechanical transmission; a cooling assembly is provided at the top of the mixing cylinder, the cooling assembly including a rotary joint movably connected to one end of the transmission rod, a cold air pipe connected to one side of the rotary joint, and an air jet opening on the surface of the transmission rod, the cooling assembly being used to transmit cold air into the mixing cylinder.

[0009] The present invention is further configured such that a driving pulley is fixedly connected to the surface of the rotating rod, and a driven pulley is fixedly connected to one side of the surface of the transmission rod, and the driving pulley and the driven pulley are connected by belt drive.

[0010] The present invention is further configured such that a spiral mixing blade is fixedly connected to the surface of the transmission rod, and a crushing roller is fixedly connected to both sides of the top of the mixing cylinder.

[0011] The present invention is further configured such that a motor is fixedly connected to one side of the top of the device frame, and the output end of the motor is fixedly connected to one end of the rotating rod.

[0012] The present invention is further configured such that a feed pipe is connected to the top of both sides of the mixing cylinder, and a first valve is installed on the surface of the feed pipe.

[0013] The present invention is further configured such that discharge pipes are connected to the bottom of both sides of the mixing cylinder, and a second valve is installed on the surface of the discharge pipes.

[0014] The present invention is further configured such that an electromagnetic valve is installed on the surface of the air cooling pipe, and the electromagnetic valve is used to control the transmission of external air cooling into the transmission rod.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model uses the reverse rotation design of the mixing cylinder and the transmission rod to form a high-intensity shear flow field, which significantly improves the mixing uniformity of TPU materials. At the same time, the cooling component delivers cold air into the transmission rod through the rotary joint and dynamically sprays it into the mixing area through the jet nozzle, directly reducing the heat generated by mechanical shearing. This effectively prevents TPU from softening and sticking to the inner wall of the mixing cylinder or the stirring components due to high temperature, thereby ensuring mixing efficiency and product quality.

[0017] 2. This utility model uses gear and toothed disc meshing transmission and belt pulley linkage to ensure stable reverse rotation of the mixing drum and transmission rod, reducing the energy consumption and failure risk of traditional multi-motor drive. The combined design of crushing roller and spiral mixing blade further enhances the material crushing and dispersion capabilities and prevents TPU agglomeration. In addition, the solenoid valve control of the cooling pipe can achieve precise cooling, adapting to different process requirements. The overall structure is compact and highly practical.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a perspective view of a rapid mixing device for processing TPU materials.

[0021] Figure 2 This is a cross-sectional view of the mixing cylinder in a rapid mixing device for processing TPU materials.

[0022] Figure 3 This is a schematic diagram of the surface structure of the transmission rod and the rotating rod in a rapid mixing device for processing TPU material.

[0023] Figure 4 This is a schematic diagram of a spiral mixing blade and a crushing roller in a rapid mixing device for processing TPU materials.

[0024] Figure 5 This is an exploded view of the transmission rod and rotary joint in a rapid mixing device for processing TPU material.

[0025] In the attached diagram: 1. Frame; 2. Mixing cylinder; 3. Gear disc; 4. Rotating rod; 5. Gear; 6. Transmission rod; 7. Rotary joint; 8. Cooling pipe; 9. Air nozzle; 10. Driving pulley; 11. Driven pulley; 12. Spiral mixing blade; 13. Crushing roller; 14. Motor; 15. Feed pipe; 16. First valve; 17. Discharge pipe; 18. Second valve; 19. Solenoid valve. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Please see Figures 1-5 This utility model relates to a rapid mixing device for TPU material processing, comprising a device frame 1, with a mixing cylinder 2 movably connected to the inner cavity of the device frame 1; a controller is fixedly connected to one side of the mixing cylinder 2 for controlling the electric structure; a mixing assembly is provided on the surface of the mixing cylinder 2, including a gear disc 3 fixedly connected to one side of the surface of the mixing cylinder 2, a rotating rod 4 movably connected to one side of the top of the device frame 1, with one side of the inner cavity of the device frame 1 movably connected to the surface of the rotating rod 4 for supporting the rotating rod 4, a gear 5 fixedly connected to one side of the surface of the rotating rod 4, the gear 5 meshing with the gear disc 3, and a transmission rod 6 movably connected to the inner cavity of the mixing cylinder 2, one end of the transmission rod 6 being rotatably connected to the bottom of the mixing cylinder 2 via a rotating shaft, and the other end extending to the outside of the mixing cylinder 2, and this end being movably connected to one end of a rotary joint 7, through which the mixing... The component is used to reduce the heat generated inside the mixing cylinder 2 due to mechanical transmission. A cooling component is provided at the top of the mixing cylinder 2. The cooling component includes a rotary joint 7 movably connected to one end of the transmission rod 6. The rotary joint 7 allows the cooling air pipe 8 to be connected to the rotating transmission rod 6. The cooling air pipe 8 is connected to one side of the rotary joint 7. One end of the cooling air pipe 8 is connected to the inside of the transmission rod 6 through the rotary joint 7, and the other end is connected to an external cooling equipment to facilitate the injection of cooling air into the mixing cylinder 2 and ensure the temperature balance inside the mixing cylinder 2. There is also a jet nozzle 9 opened on the surface of the transmission rod 6. A dustproof net is fixedly connected to the surface of the jet nozzle 9 to prevent raw materials from falling into the jet nozzle 9. The diameter of the jet nozzle 9 gradually increases from top to bottom to adapt to the temperature changes inside the mixing cylinder 2. The cooling component is used to transfer cooling air into the mixing cylinder 2.

[0029] Example 2

[0030] Please see Figures 1-5Based on Embodiment 1, a drive pulley 10 is fixedly connected to the surface of the rotating rod 4, and a driven pulley 11 is fixedly connected to one side of the surface of the transmission rod 6. The drive pulley 10 and the driven pulley 11 are connected by a belt drive. The meshing of the gear 5 and the gear disc 3 causes the rotating rod 4 to rotate in the opposite direction to the mixing cylinder 2. The drive pulley 10 and the driven pulley 11 cause the rotating rod 4 and the transmission rod 6 to rotate in the opposite direction, thereby causing the transmission rod 6 and the mixing cylinder 2 to rotate in opposite directions. This improves the mixing efficiency and eliminates the need to place the transmission structure inside the mixing cylinder 2, reducing heat accumulation. A spiral mixing blade 12 is fixedly connected to the surface of the transmission rod 6, and crushing rollers 13 are fixedly connected to both sides of the top of the mixing cylinder 2. The crushing rollers 13 can guide the mixture into the mixing cylinder 2. The raw materials are crushed by the rotation of the mixing drum 2. After the material is introduced, it is crushed by the crushing roller 13 and then mixed by the spiral mixing blades 12. A motor 14 is fixedly connected to one side of the top of the device frame 1. The output end of the motor 14 is fixedly connected to one end of the rotating rod 4. The top of both sides of the mixing drum 2 are connected to the feed pipe 15. The surface of the feed pipe 15 is equipped with a first valve 16. The bottom of both sides of the mixing drum 2 are connected to the discharge pipe 17. There are two feed pipes 15 and two discharge pipes 17 to facilitate the addition and removal of materials into the mixing drum 2 at different angles. The surface of the discharge pipe 17 is equipped with a second valve 18. The surface of the cold air pipe 8 is equipped with a solenoid valve 19. The solenoid valve 19 is used to control the transmission of external cold air into the transmission rod 6.

[0031] The working principle of this utility model is as follows: The starting motor 14 drives the rotating rod 4 to rotate. Through the meshing transmission of the gear 5 and the gear plate 3, the mixing cylinder 2 is driven to rotate in the opposite direction to the rotating rod 4. At the same time, the driving pulley 10 on the rotating rod 4 drives the driven pulley 11 on the transmission rod 6 through the belt, so that the transmission rod 6 and the mixing cylinder 2 rotate in opposite directions. During this process, the crushing roller 13 at the top of the mixing cylinder 2 initially crushes the input TPU raw material, while the spiral mixing blades 12 on the transmission rod 6 achieve efficient mixing through bidirectional shearing action. Meanwhile, external cold air enters the transmission rod 6 through the cold air pipe 8 controlled by the solenoid valve 19 and enters the interior of the transmission rod 6 through the rotary joint 7, and is ejected from the gradually changing air jet 9 on its surface to directly cool the mixing area, effectively neutralize the heat generated by shearing friction, and prevent the TPU material from sticking together. After mixing is completed, the second valve 18 of the discharge pipe 17 is opened to discharge the finished product. The entire process achieves efficient and low-temperature TPU mixing processing through the synergistic effect of reverse rotation, mechanical crushing and dynamic cold air injection.

[0032] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A TPU material processing rapid mixing device, comprising a device frame (1), characterized in that: The device frame (1) has a mixing cylinder (2) movably connected to its inner cavity; The mixing cylinder (2) is provided with a mixing component, which includes a gear disk (3) fixedly connected to one side of the surface of the mixing cylinder (2), a rotating rod (4) movably connected to one side of the top of the device frame (1), a gear (5) fixedly connected to one side of the surface of the rotating rod (4), the gear (5) meshing with the gear disk (3), and a transmission rod (6) movably connected to the inner cavity of the mixing cylinder (2). The mixing component is used to reduce the heat generated inside the mixing cylinder (2) due to mechanical transmission. The mixing cylinder (2) is provided with a cooling assembly at the top. The cooling assembly includes a rotary joint (7) movably connected to one end of the transmission rod (6), a cold air pipe (8) connected to one side of the rotary joint (7), and a jet nozzle (9) opened on the surface of the transmission rod (6). The cooling assembly is used to transmit cold air into the mixing cylinder (2).

2. The rapid mixing device for processing TPU material according to claim 1, characterized in that: The rotating rod (4) is fixedly connected to a drive pulley (10), and the transmission rod (6) is fixedly connected to a driven pulley (11) on one side of its surface. The drive pulley (10) and the driven pulley (11) are connected by a belt drive.

3. The rapid mixing device for processing TPU material of claim 1, wherein: The transmission rod (6) is fixedly connected to a spiral mixing blade (12), and the mixing cylinder (2) is fixedly connected to both sides of the top.

4. The rapid mixing device for TPU material processing according to claim 1, characterized in that: A motor (14) is fixedly connected to one side of the top of the device frame (1), and the output end of the motor (14) is fixedly connected to one end of the rotating rod (4).

5. The rapid mixing device for TPU material processing according to claim 1, characterized in that: The top of both sides of the mixing cylinder (2) is connected to a feed pipe (15), and a first valve (16) is installed on the surface of the feed pipe (15).

6. The rapid mixing device for TPU material processing according to claim 1, characterized in that: The bottom of both sides of the mixing cylinder (2) is connected to a discharge pipe (17), and a second valve (18) is installed on the surface of the discharge pipe (17).

7. The rapid mixing device for TPU material processing according to claim 1, characterized in that: A solenoid valve (19) is installed on the surface of the air pipe (8), and the solenoid valve (19) is used to control the transmission of external air to the inside of the transmission rod (6).

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