A raw material pretreatment device for producing water-based polyurethane emulsion

Abstract

This utility model discloses a raw material pretreatment device for the production of waterborne polyurethane emulsions, relating to the field of raw material pretreatment technology for waterborne polyurethane emulsion production. It includes a main body, with a motor mounted at the bottom. A water wheel is mounted on the outer side of the motor's output end. A second rotating rod extending into the interior of the main body is connected to the motor's output end. A first stirring blade is mounted on the outer side of the first rotating rod. This utility model starts the motor via an external control device, causing the motor's output end to rotate the second rotating rod. Simultaneously, when the internal temperature of the main body is too low, high-temperature water can be injected into the cavity inside the main body through an inlet at the bottom, thereby raising the overall temperature of the waterborne polyurethane emulsion raw materials being stirred inside the main body. The high-temperature water entering from the inlet is dispersed by the high-speed rotating water wheel, preventing continuous high-temperature heating of localized areas during injection, and ensuring that the first stirring blade on the outer side of the first rotating rod can perform stirring.

Description

Technical Field

[0001] This utility model relates to the field of raw material pretreatment technology for the production of waterborne polyurethane emulsions, specifically to a raw material pretreatment device for the production of waterborne polyurethane emulsions. Background Technology

[0002] Waterborne polyurethane emulsions are a novel type of polyurethane emulsion that uses water as the dispersion medium. Their main characteristics include environmental friendliness, non-toxicity, non-polluting properties, and safety. The main synthesis methods for waterborne polyurethane emulsions are the acetone method and the prepolymer mixing method. Among these, the self-emulsification method is one of the most commonly used methods for synthesizing waterborne polyurethane emulsions, achieved by adding hydrophilic chain extenders. In addition, there are methods for preparing reactive waterborne polyurethane emulsions, which use internal crosslinking agents such as trimethylolpropane monoallyl ether to improve their properties.

[0003] The production of waterborne polyurethane acrylate composite emulsions requires repeated stirring or separation of raw materials. During the reaction process, controlling the reaction temperature and time is crucial. The reaction temperature for the prepolymerization process is 75℃, and the reaction time is a certain amount of time.

[0004] Existing raw material pretreatment equipment for the production of waterborne polyurethane emulsions cannot uniformly dissipate heat or control the temperature while stirring the raw materials, requiring manual control of the external temperature at all times to ensure the reaction temperature. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a raw material pretreatment device for the production of waterborne polyurethane emulsions, so as to solve the technical problem that the raw material pretreatment device for the production of waterborne polyurethane emulsions cannot perform uniform heat dissipation or temperature control while stirring the raw materials.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a raw material pretreatment device for the production of waterborne polyurethane emulsion, comprising a main body, a motor at the bottom of the main body, a water wheel at the outer side of the motor output end, a second rotating rod extending into the interior of the main body connected to the motor output end, a second stirring blade at the outer side of the second rotating rod, a planetary gear set connected to the top of the second rotating rod, a first rotating rod connected to the top of the planetary gear set, and a first stirring blade at the outer side of the first rotating rod.

[0007] By adopting the above technical solution, the motor at the bottom of the main body is started by an external control device. When the motor starts, its output end will rotate in the forward direction at high speed, which will drive the water wheel set on its output end to rotate at high speed. Then, the two sets of water sliding rings set inside the main body ensure that the second rotating rod connected to the output end can rotate normally inside the main body, which will drive the second stirring fan blade inside the main body to rotate synchronously at high speed.

[0008] Then, through the rotation of the planetary gear set at the top of the second rotating rod, the high-speed rotation of the second rotating rod becomes a slower rotation, which in turn transmits power to the first rotating rod. When the first rotating rod rotates, it will drive the first stirring fan blade set on its outer side to rotate as well, so that the water-based polyurethane emulsion production raw materials inside the main body are fully and evenly stirred.

[0009] When stirring, if the temperature is too high or too low, high-temperature or low-temperature water can be injected into the cavity inside the main body through the water inlet at the bottom of the main body to ensure a balanced internal temperature. When water is added through external pressurization equipment, it will be dispersed and evenly filled into the cavity inside the main body as it passes through the high-speed rotating water wheel, preventing the injected water from continuously lowering or raising the temperature in the same area.

[0010] Through the above structure, the raw material pretreatment equipment for waterborne polyurethane emulsion production can uniformly dissipate heat or control the temperature while stirring the raw materials, eliminating the need for constant manual control of the external temperature to ensure the reaction temperature, and achieving rapid temperature control.

[0011] Furthermore, a support is provided on the outer side of the main body, and a fixing frame that cooperates with the motor is provided at the bottom of the main body.

[0012] By adopting the above technical solution, the main body is fixed by a bracket to prevent shaking during operation and affecting the subsequent processing effect.

[0013] Furthermore, a cap is provided at the top of the main body, and two sets of handles are provided at the top of the cap.

[0014] Furthermore, a slip ring is provided between the first rotating rod and the cover, and two sets of water slip rings are provided between the second rotating rod and the main body.

[0015] By adopting the above technical solution, external staff manually control the two sets of handles at the top of the cap to open the cap. Then, they manually put the water-based polyurethane emulsion production raw materials into the main body and place the cap on top of the main body to prevent the internal raw materials from splashing out and causing waste when the raw materials are stirred.

[0016] Furthermore, the bottom end of the main body is provided with a water outlet and a water inlet.

[0017] By adopting the above technical solution, when the temperature is too high or too low during stirring, high-temperature or low-temperature water can be injected into the cavity inside the main body through the water inlet at the bottom of the main body to ensure the internal temperature is balanced.

[0018] Furthermore, the main body has a cavity inside that communicates with the water outlet and the water inlet, and a valve is provided at one end of each of the water outlet and the water inlet.

[0019] By adopting the above technical solution, the cavity inside the main body is used to store water used for external temperature control, preventing the temperature of the main body from being too high or too low.

[0020] In summary, the present invention has the following beneficial effects: The present invention starts the motor through an external control device, causing the output end of the motor to rotate the second rotating rod. When the second rotating rod rotates, the water wheel set on its outer side rotates at high speed. At the same time, when the internal temperature of the main body is too low, high-temperature water can be injected into the cavity inside the main body through the water inlet at the bottom of the main body, thereby raising the overall temperature of the water-based polyurethane emulsion production raw materials stirred inside the main body. The high-temperature water entering from the water inlet will be dispersed by the high-speed rotating water wheel, preventing continuous high-temperature heating of local areas during injection. Then, the high-speed rotation force of the motor is converted into slow rotation through the planetary gear set and transmitted to the first rotating rod, so that the first stirring blade on the outer side of the first rotating rod can stir. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 This is a partial structural schematic diagram of the present invention;

[0024] Figure 4 This is a partial structural schematic diagram of the present invention;

[0025] Figure 5 This utility model Figure 4 Enlarged view of point A.

[0026] In the diagram: 1. Main body; 2. Support; 3. Cover; 4. Handle; 5. Outlet; 6. Inlet; 7. Motor; 8. Fixing frame; 9. Water wheel; 10. First rotating rod; 11. First stirring blade; 12. Planetary gear set; 13. Second stirring blade; 14. Second rotating rod. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of this utility model will be described below based on its overall structure.

[0029] A raw material pretreatment device for the production of waterborne polyurethane emulsions, such as Figure 1-5 As shown, the system includes a main body 1, a motor 7 at the bottom of the main body 1, a water wheel 9 on the outside of the output end of the motor 7, and a second rotating rod 14 extending into the interior of the main body 1 connected to the output end of the motor 7. The motor 7 at the bottom of the main body 1 is then started by an external control device. When the motor 7 starts, its output end will rotate at high speed in the forward direction, which will also drive the water wheel 9 on its output end to rotate at high speed. When the water wheel 9 rotates at high speed, it will be dispersed and evenly fill the cavity inside the main body 1, preventing the injected water from continuously lowering or raising the temperature of the same area.

[0030] For example, a second stirring blade 13 is provided on the outer side of the second rotating rod 14, a planetary gear set 12 is connected to the top of the second rotating rod 14, a first rotating rod 10 is connected to the top of the planetary gear set 12, and a first stirring blade 11 is provided on the outer side of the first rotating rod 10. The two sets of water-lubricating rings provided inside the main body 1 ensure that the second rotating rod 14 connected to the output end can rotate normally inside the main body 1, thereby driving the second stirring blade 13 inside the main body 1 to rotate synchronously at high speed.

[0031] In some examples, a bracket 2 is provided on the outside of the main body 1, and a fixed frame 8 that cooperates with the motor 7 is provided at the bottom of the main body 1. Then, through the rotation of the planetary gear set 12 provided at the top of the second rotating rod 14, the high-speed rotation of the second rotating rod 14 is changed to a slower rotation, and at the same time, the transmission is transmitted to the first rotating rod 10. When the first rotating rod 10 rotates, it will drive the first stirring fan 11 provided on its outside to rotate as well, so that the water-based polyurethane emulsion production raw materials inside the main body 1 are fully and evenly stirred.

[0032] For example, the top of the main body 1 is provided with a cap 3, and the top of the cap 3 is provided with two sets of handles 4. The bottom of the main body 1 is provided with a water outlet 5 and a water inlet 6. When stirring, if the temperature is too high or too low, high temperature or low temperature water can be injected into the cavity inside the main body 1 through the water inlet 6 at the bottom of the main body 1 to ensure the internal temperature is balanced.

[0033] The working principle of this utility model is as follows: When in use, the power is turned on and the external staff manually controls the two sets of handles 4 at the top of the cover 3 to open the cover 3. Then, the water-based polyurethane emulsion production raw material is manually put into the body 1. Then, the cover 3 is placed on the top of the body 1 to prevent the internal raw material from splashing out and causing waste when the raw material is stirred.

[0034] Then, the motor 7 at the bottom of the main body 1 is started by an external control device. When the motor 7 starts, its output end will rotate in the forward direction at high speed, and at the same time drive the water wheel 9 set on its output end to rotate at high speed. Then, the two sets of water sliding rings set inside the main body 1 ensure that the second rotating rod 14 connected to the output end can rotate normally inside the main body 1, and drive the second stirring fan blade 13 inside the main body 1 to rotate synchronously at high speed.

[0035] Then, through the rotation of the planetary gear set 12 set at the top of the second rotating rod 14, the high-speed rotation of the second rotating rod 14 becomes a relatively slow rotation, and at the same time, it transmits the power to the first rotating rod 10. When the first rotating rod 10 rotates, it will drive the first stirring fan 11 set on its outer side to rotate as well, so that the water-based polyurethane emulsion production raw materials inside the main body 1 are fully and evenly stirred.

[0036] When stirring, if the temperature is too high or too low, high-temperature or low-temperature water can be injected into the cavity inside the main body 1 through the water inlet 6 at the bottom of the main body 1 to ensure the internal temperature is balanced. When water is added through an external pressurization device, it will be dispersed when passing through the high-speed rotating water wheel 9 and will evenly fill the cavity inside the main body 1, preventing the injected water from continuously lowering or raising the temperature of the same area.

[0037] Through the above structure, the raw material pretreatment equipment for waterborne polyurethane emulsion production can uniformly dissipate heat or control the temperature while stirring the raw materials, eliminating the need for constant manual control of the external temperature to ensure the reaction temperature, and achieving rapid temperature control.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A raw material pretreatment apparatus for producing an aqueous polyurethane emulsion, comprising a main body (1), characterized by: A motor (7) is provided at the bottom of the main body (1). A water wheel (9) is provided on the outside of the output end of the motor (7). A second rotating rod (14) extending into the interior of the main body (1) is connected to the output end of the motor (7). A second stirring blade (13) is provided on the outside of the second rotating rod (14). A planetary gear set (12) is connected to the top of the second rotating rod (14). A first rotating rod (10) is connected to the top of the planetary gear set (12). A first stirring blade (11) is provided on the outside of the first rotating rod (10).

2. The raw material pretreatment device for producing a waterborne polyurethane emulsion according to claim 1, characterized in that: A bracket (2) is provided on the outside of the main body (1), and a fixing frame (8) that cooperates with the motor (7) is provided at the bottom of the main body (1).

3. The raw material pretreatment device for producing a waterborne polyurethane emulsion according to claim 1, characterized in that: The main body (1) is provided with a cover (3) at the top, and the cover (3) is provided with two sets of handles (4) at the top.

4. The raw material pretreatment apparatus for producing an aqueous polyurethane emulsion according to claim 1, characterized in that: A slip ring is provided between the first rotating rod (10) and the cover (3), and two sets of water slip rings are provided between the second rotating rod (14) and the main body (1).

5. The raw material pretreatment apparatus for producing an aqueous polyurethane emulsion according to claim 1, characterized in that: The main body (1) has an outlet (5) at its bottom end and an inlet (6) at its bottom end.

6. The raw material pretreatment apparatus for producing an aqueous polyurethane emulsion according to claim 5, characterized in that: The main body (1) has a cavity inside that communicates with the water outlet (5) and the water inlet (6), and a valve is provided at one end of the water outlet (5) and the water inlet (6).

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