Thermoplastic polyurethane elastomer circulating cooling production device
By designing a thermoplastic polyurethane elastomer cycle cooling production device, using hollow balls and solid balls to change the cooling water path, the problem of multiple sets of TPU cooling equipment is solved, the production demand for TPUs of different hardness is achieved, and the cost and space occupation are reduced.
Patent Information
- Application Number
- CN202422133627.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Existing TPU cooling equipment requires two or more sets of equipment to meet the production needs of different hardnesses, resulting in high equipment costs and large space consumption.
A thermoplastic polyurethane elastomer cycle cooling production device is designed, and the cooling water path is changed through the combination of hollow balls and solid balls, so that the cooling water enters different cooling boxes for temperature adjustment, and a device is used to produce TPU materials of different hardness.
It realizes the cooling needs of TPUs of different hardnesses in one device, reduces the number of equipment and space usage, reduces production costs, and reduces energy consumption through waste heat resource utilization.
Smart Images
Figure CN223058342U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of TPU preparation, and specifically relates to a cyclic cooling production device for thermoplastic polyurethane elastomer. Background Technique
[0002] Thermoplastic polyurethane elastomer, abbreviated as TPU, is a kind of elastomer that can be plasticized after heating and dissolved by solvents. It has excellent comprehensive properties such as high strength, high toughness, wear resistance, and oil resistance, and has good processing performance. It is widely used in industries such as national defense, medical treatment, and food. In order to facilitate transportation, storage, and reprocessing, manufacturers usually prepare it into granular form.
[0003] At present, in the prior art, the preparation of TPU needs to go through four steps: melting, extrusion, cooling, and cutting. In the extrusion link, an extruder is needed to extrude it into a strip shape. Then, in order to prevent adhesion in the granulation link and quickly form TPU, the strip-shaped TPU needs to be introduced into the cooling tank, and cooling water is used to cool it down. Finally, it can be cut into granular form by a cutting knife.
[0004] Since TPU has a wide hardness range, when producing low-hardness TPU, cooling water with a lower temperature will be used. This is because a lower cooling temperature can slow down the crystallization rate of TPU, making the crystallization finer and more evenly distributed, thus helping to obtain a product with lower hardness; when producing high-hardness TPU, cooling water at room temperature or slightly higher temperature can be used to accelerate the crystallization rate of TPU and promote the formation of larger crystals, thereby increasing the hardness and rigidity of TPU.
[0005] At present, when preparing TPU, two or more sets of cooling equipment are often set up for production operations to meet the production requirements of different hardness TPU. This not only causes multiple sets of equipment to occupy production space but also increases equipment costs. Content of the Utility Model
[0006] In order to solve the technical problem that the TPU cooling equipment in the prior art cannot meet the preparation requirements of different hardness TPU, resulting in the need to set up two or more sets of equipment, which not only increases equipment costs but also occupies production space, the utility model provides a cyclic cooling production device for thermoplastic polyurethane elastomer.
[0007] The purpose of the utility model can be achieved by the following technical solutions:
[0008] A cyclic cooling production device for thermoplastic polyurethane elastomer, including a cooling tank; a plurality of first cooling pipes are evenly distributed along the length direction at the bottom of the cooling tank; the upper ends of the first cooling pipes are communicated with the inside of the cooling tank; a circulation pump is installed between the first cooling pipes and the cooling tank; the lower ends of the first cooling pipes are communicated with a second cooling pipe;
[0009] A hollow ball is fixedly connected to the connection position between the first cooling pipe and the second cooling pipe; a fitting solid ball is rotatably connected inside the hollow ball; a T-shaped through hole is provided on the solid ball;
[0010] A first hose is fixedly connected to the outer wall of the hollow ball, and the upper end of the first hose communicates with the inside of the cooling tank; a second hose is fixedly connected to the lower end of the second cooling pipe, and the other end of the second hose communicates with the inside of the cooling tank.
[0011] Further, a round hole is horizontally provided in the hollow ball along the length direction of the cooling tank; a rotating rod is rotatably arranged in the round hole, and the rotating rod is connected to all the solid balls; one end of the rotating rod is fixedly connected with a handwheel.
[0012] Further, a first cooling box is fixedly arranged at the position of the cooling tank corresponding to the first cooling pipe, and the first cooling pipe is arranged inside the first cooling box; a second cooling box is fixedly arranged at the position of the cooling tank corresponding to the second cooling pipe, and the second cooling pipe is arranged inside the second cooling box.
[0013] Further, a plurality of heat exchange pipes are arranged inside both the first cooling box and the second cooling box, and hot air or cold air is introduced into the heat exchange pipes; a drain pipe is fixedly connected to the bottoms of the first cooling box and the second cooling box.
[0014] Further, a plurality of press rollers arranged at equal intervals are rotatably connected along the length direction inside the cooling tank, and the press rollers at both ends of the cooling tank are at a higher position; a limiting groove is provided on the press roller.
[0015] Further, both the first cooling pipe and the second cooling pipe are in a serpentine structure.
[0016] Further, a plurality of support members are arranged on the lower surface of the cooling tank, and the support members include a cross plate and legs.
[0017] Further, the inner diameter of the T-shaped through hole is the same as that of the first cooling pipe.
[0018] The beneficial effects of the present utility model:
[0019] By the cooperation of the hollow ball and the solid ball, the present utility model can change the path of the cooling water entering, so that the cooling water enters the first cooling box or the second cooling box for heat exchange. It can use one device to change the cooling water to different temperatures to meet the cooling requirements of different hardness TPU, without adding multiple devices to produce TPU materials with different hardnesses, which not only occupies less production space, but also has a lower investment cost.
[0020] This utility model cools the cooling water inside the cooling tank by using the first cooling tank and the second cooling tank together. Therefore, the cooling effect is better. Through the utilization of the heat exchange pipe, the manufacturer can utilize the waste heat resource to control the temperature of the cooling water, reduce energy consumption, and lower production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of this utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0022] Figure 1 is the overall structural schematic diagram of this utility model;
[0023] Figure 2 is the first sectional view of this utility model;
[0024] Figure 3 is the second sectional view of this utility model;
[0025] Figure 4 is Figure 3 the partial enlarged view of part A in
[0026] Figure 5 is the structural schematic diagram of the hollow ball in this utility model.
[0027] In the drawings, the list of components represented by each reference numeral is as follows:
[0028] 1, cooling tank; 2, TPU strip; 3, first cooling pipe; 4, second cooling pipe; 5, circulation pump; 6, hollow ball; 7, solid ball; 8, T-shaped through hole; 9, round hole; 10, first hose; 11, second hose; 12, rotating rod; 13, handwheel; 14, support member; 15, first cooling tank; 16, second cooling tank; 17, pressure roller; 18, limiting groove; 19, drain pipe; 20, heat exchange pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] The following will clearly and completely describe the technical solutions in the embodiments of this utility model with reference to the drawings in the embodiments of this utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of this utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this utility model without creative efforts fall within the scope of protection of this utility model.
[0030] Please refer to Figure 1 - Figure 2As shown in the figure, a cyclic cooling production device for thermoplastic polyurethane elastomer includes a cooling tank 1; a plurality of support members 14 are provided on the lower surface of the cooling tank 1. The support members 14 include a horizontal plate and legs, and are used to fix the cooling tank 1 at the output end of the extruder;
[0031] Please refer to again Figure 2 As shown in the figure, a plurality of pressure rollers 17 arranged at equal intervals are rotatably connected along the length direction inside the cooling tank 1. The pressure rollers 17 at both ends of the cooling tank 1 are at a higher position and are used to limit the TPU strip 2 in the cooling water, and the cooling water is used to cool the TPU strip 2; limiting grooves 18 are provided on the pressure rollers 17; TPU strips 2 are arranged at positions corresponding to the lower sides of the limiting grooves 18 on the pressure rollers 17, and are used to prevent the TPU strips 2 from moving along the width direction of the cooling tank 1.
[0032] Please refer to again Figure 2 、 Figure 3 and Figure 4 As shown in the figure, a plurality of first cooling pipes 3 are evenly arranged along the length direction at the bottom of the cooling tank 1; the upper ends of the first cooling pipes 3 are communicated with the inside of the cooling tank 1; a circulation pump 5 is installed between the first cooling pipes 3 and the cooling tank 1; the lower ends of the first cooling pipes 3 are communicated with a second cooling pipe 4; a hollow ball 6 is fixedly connected at the connection position between the first cooling pipe 3 and the second cooling pipe 4; a solid ball 7 that fits is rotatably connected inside the hollow ball 6; a T-shaped through hole 8 is provided on the solid ball 7; the inner diameter of the T-shaped through hole 8 is the same as that of the first cooling pipe 3 to avoid generating turbulence and vibration; a first hose 10 that is communicated is fixedly connected to the outer wall of the hollow ball 6, and the upper end of the first hose 10 is communicated with the inside of the cooling tank 1; a second hose 11 is fixedly connected to the lower end of the second cooling pipe 4, and the other end of the second hose 11 is communicated with the inside of the cooling tank 1;
[0033] By rotating the angle of the hollow ball 6, different conveying paths are realized by making the pipelines led by the T-shaped through hole 8 different.
[0034] Please refer to again Figure 4 and Figure 5 As shown in the figure, a circular hole 9 is horizontally provided along the length direction of the cooling tank 1 on the hollow ball 6; a rotating rod 12 is rotatably arranged in the circular hole 9, and the rotating rod 12 is connected to all the solid balls 7 and is used to assist the operator to rotate the solid balls 7; a handwheel 13 is fixedly connected to one end of the rotating rod 12 and is used to assist in rotating the rotating rod 12.
[0035] Please refer to again Figure 3As shown in the figure, a first cooling tank 15 is fixedly arranged at the bottom of the cooling tank 1 corresponding to the position of the first cooling pipe 3, and the first cooling pipe 3 is arranged inside the first cooling tank 15; a second cooling tank 16 is fixedly arranged at the bottom of the cooling tank 1 corresponding to the position of the second cooling pipe 4, and the second cooling pipe 4 is arranged inside the second cooling tank 16; both the first cooling pipe 3 and the second cooling pipe 4 are in a serpentine structure to increase the heat exchange time of the cooling water; a plurality of heat exchange pipes 20 are arranged inside both the first cooling tank 15 and the second cooling tank 16, and hot air or cold air is introduced into the heat exchange pipes 20.
[0036] A communicating drain pipe 19 is fixedly connected to the bottoms of the first cooling tank 15 and the second cooling tank 16 for discharging the cooling water after being used multiple times.
[0037] In order to facilitate the understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below:
[0038] First, sufficient cooling water is added to the cooling tank 1, the first cooling tank 15 and the second cooling tank 16, and then the TPU strip 2 at the output end of the extruder is introduced into the cooling tank 1, pressed into the limiting groove 18 inside the pressing roller 17 at intervals and separated, and the pressing roller 17 is used to press it into the cooling water to fully exchange heat with the cooling water to achieve the purpose of cooling.
[0039] During this process, if it is necessary to prepare a TPU material with a smaller hardness, hot air is directly introduced into the heat exchange pipe 20 or no hot air is introduced, and the heat exchange pipe 20 is used to heat or not heat the water body inside the first cooling tank 15 to make the water body temperature normal or slightly higher. Then, the cooling water inside the cooling tank 1 is introduced into the first cooling pipe 3 through the circulating pump 5. Since the first cooling pipe 3 is arranged inside the first cooling tank 15 and is in contact with the water body inside the first cooling tank 15, at this time, the serpentine first cooling pipe 3 exchanges heat with the water body, and then the cooling water inside the cooling tank 1 exchanges heat with the water body inside the first cooling tank 15 to achieve the purpose of cooling the cooling water. After that, it continues to be re-introduced into the cooling tank 1 under the action of the circulating pump 5 and the first hose 10 to achieve the purpose of continuously circulating and cooling the cooling water, and then the cooling water can meet the requirements for preparing a TPU material with a smaller hardness.
[0040] If it is necessary to prepare a TPU material with a greater hardness, directly introduce cold air into the inside of the heat exchange tube 20, use the heat exchange tube 20 to cool the water body inside the second cooling tank 16, reduce the temperature of the water body, and then pass the cooling water inside the cooling tank 1 through the first cooling tube 3 into the inside of the second cooling tube 4 by means of the circulation pump 5. At this time, since the water bodies inside both the first cooling tank 15 and the second cooling tank 16 are in a state of relatively low temperature, the cooling water inside the cooling tank 1 can be cooled down when passing through the first cooling tank 15 and the second cooling tank 16 under the action of the circulation pump 5, and finally re-enter the inside of the cooling tank 1 under the action of the circulation pump 5, so that the cooling water can meet the requirements for preparing a TPU material with a greater hardness.
[0041] During the process of converting from preparing a TPU material with a smaller hardness to preparing a TPU material with a greater hardness: the operator needs to rotate the rotating rod 12 through the handwheel 13 to make it rotate 90°, and then drive the solid ball 7 to rotate inside the hollow ball 6 through the rotating rod 12 to change the leading path of the T-shaped through hole 8, that is:
[0042] Changed from cooling tank 1 → circulation pump 5 → first cooling tube 3 (first cooling tank 15) → first hose 10 → cooling tank 1 to: cooling tank 1 → circulation pump 5 → first cooling tube 3 (first cooling tank 15) → T-shaped through hole 8 → second cooling tube 4 (second cooling tank 16) → second hose 11 → cooling tank 1.
[0043] Through the cooperation of the hollow ball 6 and the solid ball 7, the leading path of the cooling water can be changed, so that the cooling water enters the inside of the first cooling tank 15 or the second cooling tank 16 for heat exchange. It is possible to use one device to change the cooling water to different temperatures to meet the cooling requirements of TPU with different hardnesses, without adding multiple devices to produce TPU materials with different hardnesses, which not only occupies a smaller production space, but also has a lower investment cost.
[0044] Since the first cooling tank 15 and the second cooling tank 16 are jointly used to cool the cooling water inside the cooling tank 1, the cooling effect is better. By using the heat exchange tube 20, the manufacturer can control the temperature of the cooling water by using waste heat resources, reduce energy consumption, and lower production costs.
[0045] In the description of the specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0046] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art of this technology can make various modifications, supplements, or use similar methods to substitute for the described specific embodiments, as long as they do not deviate from the structure of the utility model or exceed the scope defined by this claims, they shall fall within the protection scope of the present utility model.
Claims
1. A cyclic cooling production device for thermoplastic polyurethane elastomer, characterized in that: It includes a cooling tank (1); a plurality of first cooling pipes (3) are evenly arranged along the length direction at the bottom of the cooling tank (1); the upper ends of the first cooling pipes (3) are communicated with the inside of the cooling tank (1); a circulation pump (5) is installed between the first cooling pipes (3) and the cooling tank (1); the lower ends of the first cooling pipes (3) are communicated with a second cooling pipe (4). A hollow ball (6) is fixedly connected at the connection position between the first cooling pipe (3) and the second cooling pipe (4); a fitting solid ball (7) is rotatably connected inside the hollow ball (6); a T-shaped through hole (8) is opened on the solid ball (7). A first hose (10) which is communicated is fixedly connected to the outer wall of the hollow ball (6), and the upper end of the first hose (10) is communicated with the inside of the cooling tank (1); a second hose (11) is fixedly connected to the lower end of the second cooling pipe (4), and the other end of the second hose (11) is communicated with the inside of the cooling tank (1).
2. The cyclic cooling production device for thermoplastic polyurethane elastomer according to claim 1, wherein: A round hole (9) is horizontally opened in the hollow ball (6) along the length direction of the cooling tank (1); a rotating rod (12) is rotatably arranged in the round hole (9), and the rotating rod (12) is connected to all the solid balls (7); a hand wheel (13) is fixedly connected to one end of the rotating rod (12).
3. The cyclic cooling production device for thermoplastic polyurethane elastomer according to claim 1, characterized in that: A first cooling box (15) is fixedly arranged at the position of the bottom of the cooling tank (1) corresponding to the first cooling pipe (3), and the first cooling pipe (3) is arranged inside the first cooling box (15); a second cooling box (16) is fixedly arranged at the position of the bottom of the cooling tank (1) corresponding to the second cooling pipe (4), and the second cooling pipe (4) is arranged inside the second cooling box (16).
4. The thermoplastic polyurethane elastomer cyclic cooling production device according to claim 3, characterized in that: A plurality of heat exchange pipes (20) are arranged inside both the first cooling box (15) and the second cooling box (16), and hot air or cold air is introduced into the heat exchange pipes (20); a drain pipe (19) which is communicated is fixedly connected to the bottoms of the first cooling box (15) and the second cooling box (16).
5. The cyclic cooling production device for thermoplastic polyurethane elastomer according to claim 1, characterized in that: A plurality of pressure rollers (17) which are arranged at equal intervals are rotatably connected inside the cooling tank (1) along the length direction, and the pressure rollers (17) at both ends of the cooling tank (1) are at a higher position; a limiting groove (18) is opened on the pressure rollers (17).
6. The thermoplastic polyurethane elastomer cyclic cooling production device according to claim 1, characterized in that: Both the first cooling pipe (3) and the second cooling pipe (4) are in a serpentine structure.
7. The cyclic cooling production device for thermoplastic polyurethane elastomer according to claim 1, characterized in that: A plurality of support members (14) are arranged on the lower surface of the cooling tank (1), and the support members (14) include a cross plate and legs.
8. A thermoplastic polyurethane elastomer cyclic cooling production device according to claim 1, characterized in that: The inner diameter of the T-shaped through hole (8) is the same as that of the first cooling pipe (3).