Material mixing device for preparing fluoride-free polyurethane

Abstract

The utility model provides a material mixing device for preparing fluoride-free polyurethane, which comprises a tank body, the middle part of the tank body is rotatably connected with a stirring main shaft, the interior of the stirring main shaft is fixedly connected with a cooling air pipe, the two sides of the cooling air pipe are fixedly connected with a plurality of soaking plates, and the two sides of the stirring main shaft are fixedly connected with a plurality of middle stirring paddles; one side of the vapor chamber is fixedly connected into the middle stirring paddle, a temperature monitoring component is fixedly connected to the inner wall of the tank body, a top shield is fixedly connected to the upper portion of the stirring main shaft, an air inlet elbow and an air outlet elbow are fixedly connected into the top shield, and the air inlet elbow and the air outlet elbow are fixedly connected to the two ends of a cooling air pipe respectively; the cooling air pipes are uniformly distributed on the stirring main shaft and the stirring paddles connected with the stirring main shaft, so that the material temperature is effectively reduced, the material property change caused by high temperature is prevented, the stability of the product quality is ensured, meanwhile, the temperature regulation is more accurate due to the addition of the temperature monitoring part, and the material mixing efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of fluorine-free polyurethane preparation technology, and in particular to a mixing device for preparing fluorine-free polyurethane. Background Technology

[0002] The preparation of fluorine-free polyurethane requires blending to optimize material properties. By mixing polyurethane with other fillers or functional additives in a specific ratio, the physical and mechanical properties and chemical stability of the material can be significantly improved, such as enhancing mechanical strength, compressive strength, and wear resistance, making it more suitable for different application scenarios. Blending also contributes to environmental protection. The preparation of fluorine-free polyurethane emphasizes the use of environmentally friendly chemical raw materials. Blending can reduce potential harm to the environment and ecology, aligning with current green and environmentally friendly production concepts. However, during the polyurethane blending process, temperature control is necessary to prevent friction from causing a temperature rise that leads to an uncontrollable, excessively fast reaction rate and a decline in material performance.

[0003] A search revealed a Chinese patent publication number CN221819170U, which discloses a mixing device for preparing polyurethane, including a mixing tank, a drive motor, and a mixing rack. The mixing tank is equipped with a fixed plate; the drive motor is fixedly connected to the fixed plate; the output shaft of the drive motor passes through the fixed plate and is fixedly connected to the mixing rack, and the bottom of the mixing rack is equipped with a mixing area that fits against the bottom of the mixing tank.

[0004] To address the problem that the aforementioned technologies lack the function of cooling the internal materials during stirring, resulting in unstable control of the mixing temperature, a mixing device for the preparation of fluorine-free polyurethane is proposed. Utility Model Content

[0005] In view of this, the present invention aims to provide a mixing device for preparing fluorine-free polyurethane, so as to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0006] The technical solution of this utility model embodiment is implemented as follows: it includes a tank body, a stirring main shaft is rotatably connected to the middle of the tank body, a cooling gas pipe is fixedly connected inside the stirring main shaft, multiple heat spreaders are fixedly connected to both sides of the cooling gas pipe, multiple central stirring paddles are fixedly connected to both sides of the stirring main shaft, one side of the heat spreader is fixedly connected to the central stirring paddle, and a temperature monitoring component is fixedly connected to the inner wall of the tank body.

[0007] In some embodiments, a top cover is fixedly connected above the stirring spindle, and an air inlet bend and an exhaust bend are fixedly connected inside the top cover. The air inlet bend and the exhaust bend are respectively fixedly connected to both ends of the cooling pipe.

[0008] In some embodiments, a temperature-controlled fan is fixedly connected to the top of the tank, and a rotary joint is fixedly connected to one end of the air inlet bend. The movable end of the rotary joint is fixedly connected to the air outlet of the temperature-controlled fan through a pipe.

[0009] In some embodiments, a stirring motor is fixedly connected to the top of the tank, and a central support is fixedly connected to the top of the stirring spindle. One end of the central support is engaged with the stirring gear ring at the power output end of the stirring motor.

[0010] In some embodiments, an air outlet pipe is fixedly connected to one side of the stirring motor, and the air outlet pipe is rotatably connected to the top cover and the exhaust bend.

[0011] In some embodiments, a feed inlet is fixedly connected to the top of the tank, and a discharge outlet is fixedly connected to the bottom of the tank.

[0012] In some embodiments, a central support is fixedly connected to the middle of the stirring main shaft, and stirring side shafts are rotatably connected to both sides of the central support. Multiple side stirring paddles are fixedly connected to one side of the stirring side shaft, and multiple bottom limiting grooves are fixedly connected to the bottom of the tank. The inner side of the bottom limiting groove is movably connected to the stirring main shaft and the stirring side shaft.

[0013] In some embodiments, a drive gear is fixedly connected to the top of the stirring side shaft, and a drive gear ring is fixedly connected to the inner wall of the top of the tank, with the drive gear ring and the drive gear meshing with each other.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] 1. A mixing device for preparing fluorine-free polyurethane, wherein a cooling gas pipe is evenly distributed on the stirring shaft and the stirring paddle connected thereto, which effectively reduces the material temperature and prevents changes in material properties caused by high temperature, thereby ensuring the stability of product quality. At the same time, the addition of a temperature monitoring component makes temperature regulation more precise and further improves mixing efficiency.

[0016] 2. A mixing device for the preparation of fluorine-free polyurethane significantly improves the mixing effect by adding a side-shaft and side-mounted agitators. During rotation, the main mixing shaft not only drives the central agitator but also drives the side-shaft and its side-mounted agitators via a central support. Furthermore, the meshing of the drive gear ring and drive gear allows the side-shaft to rotate simultaneously while revolving around the central axis, resulting in more uniform material mixing, effectively shortening the mixing time and improving production efficiency.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the main view of the present invention.

[0020] Figure 2 This is a diagram of the internal structure of the upper side of this utility model;

[0021] Figure 3 This is a structural diagram of the air outlet duct of this utility model;

[0022] Figure 4 This is a cross-sectional view of the top cover of this utility model;

[0023] Figure 5 This is a diagram showing the internal structure of the stirring spindle of this utility model.

[0024] Figure label:

[0025] 1. Tank body; 2. Inlet; 3. Outlet; 4. Stirring shaft; 5. Stirring motor; 6. Stirring gear ring; 7. Central support; 8. Bottom limiting groove; 9. Stirring side shaft; 10. Temperature monitoring component; 11. Side stirring paddle; 12. Drive gear; 13. Drive gear ring; 14. Temperature control fan; 15. Air outlet pipe; 16. Top cover; 17. Rotary joint; 18. Cooling air pipe; 19. Air inlet bend; 20. Exhaust bend; 21. Heat spreader; 22. Central stirring paddle. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] Example 1:

[0029] like Figure 1-5As shown, a mixing device for preparing fluorine-free polyurethane includes a tank 1. A stirring shaft 4 is rotatably connected to the middle of the tank 1. The stirring shaft 4 is hollow inside. A cooling gas pipe 18 is fixedly connected inside the stirring shaft 4. Multiple heat spreaders 21 are welded to both sides of the cooling gas pipe 18. Multiple central stirring paddles 22 are fixedly connected to both sides of the stirring shaft 4. One side of the heat spreader 21 is fixedly connected to the central stirring paddle 22. A temperature monitoring component 10 is fixedly connected to the inner wall of the tank 1. A feed inlet 2 is fixedly connected to the top of the tank 1. A discharge outlet 3 is fixedly connected to the bottom of the tank 1. The material is fed into the discharge outlet 3 from the feed inlet 2. A solenoid valve control switch is located on one side of the feed inlet 2 and the discharge outlet 3.

[0030] During mixing, the mixing spindle 4 rotates, synchronously driving multiple middle mixing blades 22 on both sides to rotate. At this time, low-temperature gas enters from one side of the cooling pipe 18 and exits from the other side. In this process, the heat spreader 21 can be cooled. By reducing the temperature of the heat spreader 21, the middle mixing blades 22 on the outside are cooled. This reduces the temperature of the material in contact with the middle mixing blades 22 during mixing, thereby preventing the material temperature from rising during mixing and affecting product quality. The temperature monitoring component 10 can monitor the internal material temperature and adjust the gas temperature entering the cooling pipe 18.

[0031] In this embodiment, a top cover 16 is fixedly connected above the stirring spindle 4, and an air inlet bend 19 and an exhaust bend 20 are fixedly connected inside the top cover 16. The air inlet bend 19 and the exhaust bend 20 are respectively fixedly connected to both ends of the cooling air pipe 18.

[0032] A temperature control fan 14 is fixedly connected to the top of the tank 1. A rotary joint 17 is fixedly connected to one end of the air inlet bend 19. The movable end of the rotary joint 17 is fixedly connected to the air outlet of the temperature control fan 14 through a pipe.

[0033] The temperature control fan 14 can adjust the temperature of the gas entering the cooling pipe 18. The gas enters the cooling pipe 18 from the inlet bend 19. Since the top of the inlet bend 19 is located at the center of rotation, the gas can be introduced by the rotary joint 17 when rotating.

[0034] Gas discharged from one side of the cooling pipe 18 can be discharged from the side of the top cover 16 via the exhaust bend 20.

[0035] In this embodiment, a stirring motor 5 is fixedly connected to the top of the tank body 1, and a middle support 7 is fixedly connected to the top of the stirring main shaft 4. One end of the middle support 7 is engaged with the stirring gear ring 6 at the power output end of the stirring motor 5.

[0036] When the stirring motor 5 is working, the stirring gear ring 6 can drive the stirring main shaft 4 to rotate.

[0037] In this embodiment, an air outlet pipe 15 is fixedly connected to one side of the stirring motor 5. The air outlet pipe 15 is rotatably connected to the top cover 16 and the exhaust bend pipe 20. The inner side of the air outlet pipe 15 is close to the outer side of the top cover 16, which can concentrate the gas discharged by the exhaust bend pipe 20 during rotation to the air outlet side of the air outlet pipe 15 for discharge, thus preventing it from affecting the working environment.

[0038] In this embodiment: the top of the tank 1 is fixedly connected to the inlet 2, and the bottom of the tank 1 is fixedly connected to the outlet 3;

[0039] The temperature control fan 14 can adjust the temperature of the gas entering the cooling pipe 18. The gas enters the cooling pipe 18 from the inlet bend 19. Since the top of the inlet bend 19 is located at the center of rotation, the gas can be introduced by the rotary joint 17 when rotating.

[0040] The gas discharged from one side of the cooling pipe 18 can be discharged from the side of the top cover 16 through the exhaust bend 20. When the stirring motor 5 is working, the stirring gear ring 6 can drive the stirring main shaft 4 to rotate. The inner side of the air outlet pipe 15 is close to the outer side of the top cover 16, which can concentrate the gas discharged from the exhaust bend 20 during rotation to the air outlet side of the air outlet pipe 15 to prevent it from affecting the working environment.

[0041] Example 2:

[0042] A mixing apparatus for preparing fluorine-free polyurethane is provided in this embodiment, which is improved upon Example 1 as follows: Figure 1-5 As shown,

[0043] In this embodiment, a central support 7 is fixedly connected to the middle of the stirring main shaft 4, and stirring side shafts 9 are rotatably connected to both sides of the central support 7. Multiple side stirring paddles 11 are fixedly connected to one side of the stirring side shaft 9, and multiple bottom limiting grooves 8 are fixedly connected to the bottom of the tank body 1. The inner side of the bottom limiting grooves 8 is movably connected to the stirring main shaft 4 and the stirring side shafts 9. During the rotation of the stirring main shaft 4, the central support 7 can drive the stirring side shafts 9 on both sides to rotate continuously. The stirring effect is improved by the multiple side stirring paddles 11, and the bottom limiting grooves 8 can make the movement state of the stirring main shaft 4 and the stirring side shafts 9 more stable.

[0044] A drive gear 12 is fixedly connected to the top of the stirring side shaft 9, and a drive gear ring 13 is fixedly connected to the inner wall of the top of the tank body 1. The drive gear ring 13 and the drive gear 12 mesh with each other. The drive gear ring 13 cooperates with the drive gear 12 to allow the stirring side shaft 9, which rotates with the stirring main shaft 4 as its center of gravity, to rotate on its own axis while revolving around the main shaft, thereby further improving the mixing effect.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A mixing apparatus for preparing fluorine-free polyurethane, comprising a tank (1), characterized in that: A stirring spindle (4) is rotatably connected to the middle of the tank (1). A cooling gas pipe (18) is fixedly connected inside the stirring spindle (4). Multiple heat spreaders (21) are fixedly connected to both sides of the cooling gas pipe (18). Multiple central stirring paddles (22) are fixedly connected to both sides of the stirring spindle (4). One side of the heat spreader (21) is fixedly connected to the central stirring paddle (22). A temperature monitoring component (10) is fixedly connected to the inner wall of the tank (1).

2. The mixing apparatus for preparing fluorine-free polyurethane according to claim 1, characterized in that: A top cover (16) is fixedly connected above the stirring spindle (4). An air inlet bend (19) and an exhaust bend (20) are fixedly connected inside the top cover (16). The air inlet bend (19) and the exhaust bend (20) are respectively fixedly connected to both ends of the cooling pipe (18).

3. The mixing apparatus for preparing fluorine-free polyurethane according to claim 2, characterized in that: A temperature control fan (14) is fixedly connected to the top of the tank (1), and a rotary joint (17) is fixedly connected to one end of the air inlet bend (19). The movable end of the rotary joint (17) is fixedly connected to the air outlet of the temperature control fan (14) through a pipe.

4. The mixing apparatus for preparing fluorine-free polyurethane according to claim 3, characterized in that: A stirring motor (5) is fixedly connected to the top of the tank (1), and a middle support (7) is fixedly connected to the top of the stirring main shaft (4). One end of the middle support (7) is engaged with the stirring gear ring (6) at the power output end of the stirring motor (5).

5. The mixing apparatus for preparing fluorine-free polyurethane according to claim 4, characterized in that: The stirring motor (5) is fixedly connected to an air outlet pipe (15) on one side, and the air outlet pipe (15) is rotatably connected to the top cover (16) and the exhaust bend pipe (20).

6. The mixing apparatus for preparing fluorine-free polyurethane according to claim 5, characterized in that: The tank (1) has a feed inlet (2) fixedly connected to the top and a discharge outlet (3) fixedly connected to the bottom.

7. The mixing apparatus for preparing fluorine-free polyurethane according to claim 2, characterized in that: The stirring main shaft (4) is fixedly connected to the middle support (7), and the stirring side shafts (9) are rotatably connected to both sides of the middle support (7). Multiple side stirring paddles (11) are fixedly connected to one side of the stirring side shaft (9). Multiple bottom limiting grooves (8) are fixedly connected to the bottom of the tank (1). The bottom limiting grooves (8) are movably connected to the stirring main shaft (4) and the stirring side shafts (9) inside.

8. The mixing apparatus for preparing fluorine-free polyurethane according to claim 7, characterized in that: A drive gear (12) is fixedly connected to the top of the stirring side shaft (9), and a drive gear ring (13) is fixedly connected to the inner wall of the top of the tank body (1). The drive gear ring (13) and the drive gear (12) mesh with each other.

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