TPU (thermoplastic polyurethane) material recycling and granulating device
By introducing a spray cooling and screening mechanism into the TPU material recycling and granulation device, the problems of low cooling efficiency and uneven screening were solved, achieving efficient cooling and precise screening, thereby improving the quality and production efficiency of recycled TPU materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN RUIHUAN NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-22
AI Technical Summary
Existing TPU material recycling and granulation equipment has low cooling efficiency, which leads to high-temperature particle adhesion and deformation. In addition, the lack of an effective screening mechanism results in particles of different sizes and inconsistent quality.
The cooling mechanism efficiently cools and screens TPU particles through spray cooling and screening. The cooling mechanism consists of a water tank, submersible pump, and nozzles to achieve all-round spray cooling, while the screening mechanism uses a motor-driven cam to drive a rotating frame and screening screen to achieve precise screening.
It improves the cooling efficiency of TPU particles, avoids adhesion and deformation, ensures particle size consistency, and enhances the quality and production efficiency of recycled materials.
Smart Images
Figure CN224266094U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of TPU material recycling, specifically to a TPU material recycling and granulation device. Background Technology
[0002] TPU (thermoplastic polyurethane elastomer), as a high-performance thermoplastic elastomer material, possesses numerous excellent properties such as high strength, high toughness, wear resistance, oil resistance, and aging resistance. It has been widely used in many fields, including footwear, pipes, films, cables, automotive parts, and medical devices. With the continuous increase in the use of TPU materials, a large amount of waste is also generated. If this waste TPU material is not properly and effectively recycled, it will not only cause a huge waste of resources but also have adverse effects on the environment, necessitating the use of recycling and granulation equipment.
[0003] Existing TPU material recycling and granulation equipment suffers from simple cooling methods and low cooling efficiency, resulting in a large number of high-temperature TPU particles not being sufficiently cooled in a short time. This can cause the particles to stick together and deform due to residual heat during subsequent processing, affecting the appearance and performance of the recycled TPU material.
[0004] Furthermore, existing TPU material recycling and granulation equipment lacks an effective screening mechanism, making it impossible to properly screen the granulated TPU particles. This results in particles of varying sizes and quality, with non-compliant particles mixed in, affecting the overall quality of the recycled TPU material.
[0005] Therefore, we have made improvements to this by proposing a TPU material recycling and granulation device. Utility Model Content
[0006] To address the shortcomings of existing technologies, this invention provides a TPU material recycling and granulation device, which solves the problems mentioned in the background art.
[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0008] A TPU material recycling and granulation device was developed to solve the above problems.
[0009] The application is as follows:
[0010] The granulator includes a box body installed on its lower surface, a conveying mechanism inside the box body, a cooling mechanism on the upper side of the conveying mechanism, a discharge hole on one side of the box body, a screening mechanism on one side of the discharge hole, a collection frame slidably connected to the bottom of the box body, and a support leg fixedly installed on the lower surface of the box body.
[0011] The conveying mechanism includes a first rotating shaft and a second rotating shaft, both of which are rotatably connected inside the housing. A conveyor belt is tightly fitted to the outside of the first and second rotating shafts, and the conveyor belt is arranged in a filter mesh shape. A first motor is fixedly installed on the front surface of the housing, and the output end of the first motor is fixedly connected to one end of the first rotating shaft.
[0012] As a preferred technical solution of this application, the cooling mechanism includes a water tank, which is fixedly installed inside the housing. A submersible pump is fixedly installed inside the water tank, and a water pumping pipe and a drain pipe are fixedly installed on both sides of the submersible pump, respectively. The other end of the drain pipe is connected to a ring pipe, and a horizontal pipe is fixedly installed in the middle of the ring pipe. Spray nozzles are fixedly installed on the lower surfaces of both the ring pipe and the horizontal pipe.
[0013] As a preferred technical solution of this application, fixing blocks are fixedly installed on the outer surfaces of both sides of the ring tube, and the fixing blocks are fixedly installed inside the box.
[0014] As a preferred technical solution of this application, the screening mechanism includes a rotating frame, and the rotating frame is connected to a rotating rod inside the box. A screening screen is fixedly installed inside the rotating frame. Two mounting plates are fixedly installed on the inner wall of the box, and tension springs are fixedly installed on the upper surface of the mounting plates and the lower surface of the rotating frame.
[0015] As a preferred technical solution of this application, a second motor is fixedly installed on one side surface of the housing, and a cam is fixedly connected to the output end of the second motor, the cam being located on the lower side of the rotating frame.
[0016] As a preferred technical solution of this application, a baffle is fixedly installed inside the box, and the baffle is located on the upper side of the rotating frame, and the baffle is inclined.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] In the scheme of this application:
[0019] 1. The cooling mechanism enhances the cooling effect of TPU granules. A submersible pump in the water tank draws cooling water through the suction pipe, then delivers it to the ring and horizontal pipes via the drain pipe. Finally, the water is evenly sprayed from the nozzles onto the freshly granulated, high-temperature TPU granules. This comprehensive spray cooling method rapidly reduces the granule temperature, preventing issues such as granule sticking and deformation due to residual heat. This effectively ensures the appearance and performance of the recycled TPU material, enhancing its adaptability to subsequent processing and improving product quality stability.
[0020] 2. The screening mechanism enables effective screening of TPU granules. A second motor drives a cam to rotate, and with the help of a tension spring, the rotating frame and the internal screening screen reciprocate, quickly and accurately separating compliant and non-compliant granules. This avoids inconsistent particle size and quality, effectively removing non-compliant granules, significantly improving the overall quality of recycled TPU materials, reducing the difficulty and cost of subsequent processing, and increasing production efficiency. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a three-dimensional structural diagram of the interior of the housing of this utility model;
[0023] Figure 3 This is a three-dimensional structural diagram of the cooling mechanism of this utility model;
[0024] Figure 4 This is a three-dimensional structural diagram of the cam of this utility model.
[0025] The image shows:
[0026] 1. Granulator; 2. Housing; 3. Conveying mechanism; 301. First rotating shaft; 302. Second rotating shaft; 303. Conveyor belt; 304. First motor; 4. Cooling mechanism; 401. Water tank; 402. Submersible pump; 403. Pumping pipe; 404. Drainage pipe; 405. Ring pipe; 406. Horizontal pipe; 407. Nozzle; 408. Fixing block; 5. Discharge hole; 6. Screening mechanism; 601. Rotating frame; 602. Screening screen; 603. Mounting plate; 604. Tension spring; 605. Second motor; 606. Cam; 7. Collection frame; 8. Support leg; 9. Baffle. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only some embodiments of this utility model, and not all embodiments.
[0028] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0029] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0031] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0032] To address the technical problems in the background section, the following TPU material recycling and granulation device is provided:
[0033] Combination Figure 1 - Figure 4 As shown, the present invention provides a TPU material recycling and granulation device, including a granulator 1, a housing 2 installed on the lower surface of the granulator 1, a conveying mechanism 3 inside the housing 2, a cooling mechanism 4 on the upper side of the conveying mechanism 3, a discharge hole 5 on one side surface of the housing 2, a screening mechanism 6 on one side of the discharge hole 5, a collection frame 7 slidably connected to the bottom of the housing 2, and a support leg 8 fixedly installed on the lower surface of the housing 2; the conveying mechanism 3 includes a first rotating shaft 301 and a second rotating shaft 302, both of which are rotatably connected inside the housing 2, a conveyor belt 303 tightly attached to the outside of the first rotating shaft 301 and the second rotating shaft 302, and the conveyor belt 303 is arranged in a filter mesh shape, a first motor 304 fixedly installed on the front surface of the housing 2, and the output end of the first motor 304 is fixedly connected to one end of the first rotating shaft 301.
[0034] In this embodiment: After the granulator 1 completes the granulation process, the produced TPU granules fall into the tightly installed housing 2 below it. The conveying mechanism 3 inside the housing 2 transports the granules. A first motor 304 serves as the power source, driving the first rotating shaft 301 to rotate, which in turn drives the filter conveyor belt 303, which is tightly attached to the outside of the first and second rotating shafts 301, to operate smoothly, achieving orderly transport of the granules within the housing 2. The cooling mechanism 4 located on the upper side of the conveying mechanism 3 can promptly cool the TPU granules, which are still at a high temperature after granulation, effectively preventing the granules from sticking or deforming due to residual heat. This provides strong support for subsequent screening and other processing steps, ensuring the smooth operation of the entire recycling granulation process.
[0035] refer to Figure 1 - Figure 3 Based on the above embodiments, in order to achieve better cooling of TPU particles, this embodiment provides the following design:
[0036] In a preferred embodiment, the cooling mechanism 4 includes a water tank 401, which is fixedly installed inside the housing 2. A submersible pump 402 is fixedly installed inside the water tank 401. A water pump pipe 403 and a drain pipe 404 are fixedly installed on both sides of the submersible pump 402, respectively. The other end of the drain pipe 404 is connected to a ring pipe 405. A horizontal pipe 406 is fixedly installed in the middle of the ring pipe 405. A nozzle 407 is fixedly installed on the lower surface of both the ring pipe 405 and the horizontal pipe 406.
[0037] In this embodiment: the water tank 401 is securely installed inside the housing 2. The submersible pump 402 fixed inside the water tank 401 draws cooling water from the water tank 401 and delivers it to the ring pipe 405 through the water intake pipe 403 and the drain pipe 404 connected on both sides. The horizontal pipe 406 installed in the middle of the ring pipe 405 is connected to it. The nozzles 407 evenly distributed on the lower surface of both pipes can spray and cool the TPU particles conveyed on the conveyor belt 303 from all directions and multiple angles, ensuring that the particles cool down quickly and effectively guaranteeing the quality of the recycled TPU material.
[0038] In a preferred embodiment, fixing blocks 408 are fixedly installed on the exterior of both sides of the ring pipe 405, and the fixing blocks 408 are fixedly installed inside the housing 2.
[0039] In this embodiment: During the cooling operation, the ring pipe 405 can always be kept in a fixed position by the fixing block 408, and will not be displaced due to the impact of water flow or the vibration of the device, thereby ensuring that the nozzle 407 sprays cooling water accurately and stably, so that the TPU particles can be cooled evenly and efficiently.
[0040] refer to Figure 2 - Figure 4Based on the above embodiments, in order to enable the sieving of TPU particles, this embodiment provides the following design:
[0041] In a preferred embodiment, the screening mechanism 6 includes a rotating frame 601, which is connected to a rotating rod inside the housing 2. A screening screen 602 is fixedly installed inside the rotating frame 601. Two mounting plates 603 are fixedly installed on the inner wall of the housing 2, and tension springs 604 are fixedly installed on the upper surface of the mounting plates 603 and the lower surface of the rotating frame 601.
[0042] In this embodiment: the rotating frame 601 is connected to the inside of the box 2 via a rotating rod. Two mounting plates 603 are fixedly installed on the inner wall of the box 2 and connected to the lower surface of the rotating frame 601 via a tension spring 604. This allows the rotating frame 601 to reciprocate when subjected to external force, driving the screening screen 602 to move together, thereby quickly and accurately separating TPU particles that meet the specifications and those that do not, thus improving the overall quality of the recycled TPU material.
[0043] In a preferred embodiment, a second motor 605 is fixedly installed on one side surface of the housing 2, and a cam 606 is fixedly connected to the output end of the second motor 605. The cam 606 is located on the lower side of the rotating frame 601.
[0044] In this embodiment: when the second motor 605 starts, it drives the cam 606 to rotate continuously. The protruding part of the cam 606 periodically pushes up the rotating frame 601. Under the elastic cooperation of the tension spring 604, the rotating frame 601 can generate regular reciprocating swing, which in turn drives the screening screen 602 to vibrate at high frequency, allowing the TPU particles to roll and jump fully on the screening screen 602, achieving efficient and accurate screening, effectively separating particles of different specifications, and greatly improving the quality stability of recycled TPU materials.
[0045] In a preferred embodiment, a baffle 9 is fixedly installed inside the housing 2, and the baffle 9 is located on the upper side of the rotating frame 601, and the baffle 9 is inclined.
[0046] In this embodiment, the baffle 9 is located on the upper side of the rotating frame 601 and is installed at an angle. When the TPU particles fall from the conveying mechanism 3, the inclined baffle 9 can guide the particles so that they slide accurately onto the screening screen 602 inside the rotating frame 601, preventing the particles from scattering to other parts of the box 2.
[0047] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0048] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.
Claims
1. A TPU material recycling and granulation device, comprising a granulator (1), characterized in that: The lower surface of the granulator (1) is equipped with a box (2), and the inside of the box (2) is provided with a conveying mechanism (3). A cooling mechanism (4) is provided on the upper side of the conveying mechanism (3). A discharge hole (5) is opened on one side surface of the box (2), and a screening mechanism (6) is provided on one side of the discharge hole (5). A collection frame (7) is slidably connected to the bottom of the box (2), and a support leg (8) is fixedly installed on the lower surface of the box (2). The conveying mechanism (3) includes a first rotating shaft (301) and a second rotating shaft (302), and the first rotating shaft (301) and the second rotating shaft (302) are rotatably connected inside the housing (2). The first rotating shaft (301) and the second rotating shaft (302) are tightly fitted with a conveyor belt (303), and the conveyor belt (303) is arranged in a filter mesh shape. A first motor (304) is fixedly installed on the front surface of the housing (2), and the output end of the first motor (304) is fixedly connected to one end of the first rotating shaft (301).
2. The TPU material recycling and granulation device according to claim 1, characterized in that: The cooling mechanism (4) includes a water tank (401), and the water tank (401) is fixedly installed inside the box body (2). A submersible pump (402) is fixedly installed inside the water tank (401), and a water pump pipe (403) and a drain pipe (404) are fixedly installed on both sides of the submersible pump (402). The other end of the drain pipe (404) is connected to a ring pipe (405), and a horizontal pipe (406) is fixedly installed in the middle of the ring pipe (405). A nozzle (407) is fixedly installed on the lower surface of both the ring pipe (405) and the horizontal pipe (406).
3. The TPU material recycling and granulation device according to claim 2, characterized in that: Fixing blocks (408) are fixedly installed on the exterior of both sides of the ring tube (405), and the fixing blocks (408) are fixedly installed inside the box (2).
4. The TPU material recycling and granulation device according to claim 1, characterized in that: The screening mechanism (6) includes a rotating frame (601), and the rotating frame (601) is connected to the rotating rod inside the box (2). A screening screen (602) is fixedly installed inside the rotating frame (601). Two mounting plates (603) are fixedly installed on the inner wall of the box (2), and tension springs (604) are fixedly installed on the upper surface of the mounting plate (603) and the lower surface of the rotating frame (601).
5. The TPU material recycling and granulation device according to claim 4, characterized in that: A second motor (605) is fixedly installed on one side surface of the housing (2), and a cam (606) is fixedly connected to the output end of the second motor (605). The cam (606) is located on the lower side of the rotating frame (601).
6. The TPU material recycling and granulation device according to claim 1, characterized in that: A baffle (9) is fixedly installed inside the box (2), and the baffle (9) is located on the upper side of the rotating frame (601). The baffle (9) is inclined.