Gradient temperature control stirring mechanism of solvent-free polyurethane synthesis reaction kettle

Abstract

The utility model relates to the technical field of corrosion protection, specifically step temperature control stirring mechanism for solventless polyurethane synthetic reaction kettle, including the reaction kettle body, the inner wall of reaction kettle body is opened with a plurality of charging port, the stirring mechanism is rotatably sleeved in the inner wall of reaction kettle body, the inner wall of reaction kettle body is sleeved with temperature control mechanism, the stirring mechanism includes support plate, servo motor, belt, first transmission wheel, second transmission wheel, third transmission wheel, first stirring vane, second stirring vane, third stirring vane and drainage hole, and one side of support plate is fixedly installed in the arc outer surface of reaction kettle body. The utility model, through first stirring vane, second stirring vane and third stirring vane realize the reinforced mixing of material, because the diameter of first stirring vane is shorter, the second stirring vane rotates counterclockwise, the third stirring vane is provided with drainage hole, can adapt to the mixing degree and difficulty of material, realizes the step stirring of the end surface of material.

Description

Technical Field

[0001] This utility model relates to the field of corrosion protection technology, specifically to a gradient temperature control stirring mechanism for a solvent-free polyurethane synthesis reactor. Background Technology

[0002] Solvent-free polyurethane generally refers to solvent-free rigid polyurethane foam. Solvent-free rigid polyurethane foam contains no components that can evaporate into the atmosphere. Due to its absence of volatile organic compounds and excellent environmental performance, it is widely used in adhesives, coatings, elastomers, and other fields. Its synthesis process is highly sensitive to reaction temperature and material mixing uniformity. The reactor, as the core equipment in its synthesis process, directly determines the molecular weight distribution, mechanical properties, and production stability of the product through its temperature control accuracy and stirring effect.

[0003] In the traditional synthesis process of solvent-free polyurethane, the stirring mechanism in the reactor is designed in a relatively simple way, which makes it difficult to adapt to the degree and difficulty of mixing materials. At the same time, it is easy to have dead zones in the stirring, resulting in uneven mixing of materials.

[0004] Therefore, a gradient temperature-controlled stirring mechanism for a solvent-free polyurethane synthesis reactor is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a gradient temperature-controlled stirring mechanism for a solvent-free polyurethane synthesis reactor, which can solve the problem that traditional stirring mechanisms in reactors are generally simple in design and difficult to adapt to the degree of material mixing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: The gradient temperature control stirring mechanism of the solvent-free polyurethane synthesis reactor in this embodiment includes a reactor body. The inner wall of the reactor body is provided with multiple charging ports. A stirring mechanism is rotatably sleeved on the inner wall of the reactor body. A temperature control mechanism is sleeved on the inner wall of the reactor body. The stirring mechanism includes a support plate, a servo motor, a belt, a first transmission wheel, a second transmission wheel, a third transmission wheel, a first stirring blade, a second stirring blade, a third stirring blade, and a drainage hole. One side of the support plate is fixedly installed on the arc-shaped outer surface of the reactor body. The upper end face of the support plate is fixedly connected to the lower end face of the servo motor. The inner walls of the first transmission wheel, the second transmission wheel, and the third transmission wheel are all sleeved with one side of the belt.

[0007] Preferably, one end of the first stirring blade passes through the inner wall of the reactor body and is fixedly connected to one side of the first transmission wheel, the other end of the first stirring blade is rotatably sleeved inside the reactor body, and the output end of the servo motor is fixedly installed on the inner wall of the first transmission wheel.

[0008] Preferably, one end of the second stirring blade is rotatably sleeved inside the reactor body, and the other end of the second stirring blade passes through the inner wall of the reactor body and is fixedly connected to one side of the second drive wheel.

[0009] Preferably, each of the reactor bodies is rotatably fitted with a third stirring blade, one side of which penetrates the inner wall of the reactor body and is fixedly installed on one side of the third drive wheel, and the inner wall of the third stirring blade is provided with multiple drainage holes.

[0010] Preferably, the temperature control mechanism includes a discharge plate, a PLC controller, partitions, a discharge pipe, a solenoid valve, a groove, a discharge port, a mounting port, an electric heating tube, and support feet. The surfaces of multiple partitions are fixedly fitted into the reactor body. The arc-shaped outer surface of the discharge pipe is fixedly fitted into the center of the partitions. The surface of the solenoid valve is fixedly fitted into the discharge pipe. The grooves are all formed in the reactor body. Both ends of the electric heating tube are fixedly installed in the reactor body.

[0011] Preferably, the discharge port is located on the upper end face of the reactor body, and the two sides of the discharge plate are rotatably sleeved within the reactor body.

[0012] Preferably, the mounting port is located on the upper end face of the reactor body, the surface of the PLC controller is fixedly mounted inside the reactor body, the upper end face of the support foot is fixedly mounted on the lower end face of the reactor body, and the support foot is configured as three feet.

[0013] Compared with the prior art, this utility model provides a gradient temperature control stirring mechanism for a solvent-free polyurethane synthesis reactor, which has the following beneficial effects: 1. The material is enhanced by the first stirring blade, the second stirring blade and the third stirring blade. Since the first stirring blade has a short diameter, the second stirring blade rotates counterclockwise, and the third stirring blade is equipped with a flow hole, it can adapt to the mixing degree and difficulty of the material and realize the step mixing of the material at the end face.

[0014] 2. By setting up partitions, the reactor body is divided into multiple compartments, and each compartment is equipped with a corresponding electric heating tube, which facilitates gradient temperature control inside the reactor body. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the reaction vessel body of this utility model; Figure 3 This is a schematic cross-sectional view of the reaction vessel body of this utility model; Figure 4 This is a schematic diagram of the stirring structure of this utility model.

[0016] In the diagram: 1. Reactor body; 2. Baffle plate; 3. Groove; 5. Charging port; 6. Discharge plate; 7. PLC controller; 9. Discharge pipe; 10. Solenoid valve; 11. Support leg; 12. Support plate; 13. Servo motor; 14. First drive wheel; 15. Second drive wheel; 16. First stirring blade; 17. Second stirring blade; 18. Belt; 19. Third drive wheel; 20. Third stirring blade; 21. Drainage hole; 22. Electric heating tube. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0018] Please see Figure 1 - Figure 4 The gradient temperature control stirring mechanism of the solvent-free polyurethane synthesis reactor in this embodiment includes a reactor body 1. The inner wall of the reactor body 1 is provided with multiple charging ports 5. A stirring mechanism is rotatably sleeved on the inner wall of the reactor body 1. A temperature control mechanism is sleeved on the inner wall of the reactor body 1. The stirring mechanism includes a support plate 12, a servo motor 13, a belt 18, a first transmission wheel 14, a second transmission wheel 15, a third transmission wheel 19, a first stirring blade 16, a second stirring blade 17, a third stirring blade 20, and a drainage hole 21. One side of the support plate 12 is fixedly installed on the arc-shaped outer surface of the reactor body 1. The upper end face of the support plate 12 is fixedly connected to the lower end face of the servo motor 13. The inner walls of the first transmission wheel 14, the second transmission wheel 15, and the third transmission wheel 19 are all sleeved with one side of the belt 18. When the first transmission wheel 14 is being driven, the received transmission force can be transmitted to the belt 18. The belt 18 drives the second transmission wheel 15 and the third transmission wheel 19. The second transmission wheel 15 is clamped between the first transmission wheel 14 and the third transmission wheel 19, thus realizing the reverse rotation of the second transmission wheel 15. One end of the first stirring blade 16 passes through the inner wall of the reactor body 1 and is fixedly connected to one side of the first transmission wheel 14. The other end of the first stirring blade 16 is rotated and sleeved inside the reactor body 1. The output end of the servo motor 13 is fixedly installed on the inner wall of the first transmission wheel 14. By setting the first stirring blade 16 to the smallest diameter, the material can be quickly diffused and mixed during rotation; One end of the second stirring blade 17 is rotatably sleeved inside the reactor body 1, and the other end of the second stirring blade 17 passes through the inner wall of the reactor body 1 and is fixedly connected to one side of the second transmission wheel 15. The second stirring blade 17 can form convection with the first stirring blade and the third stirring blade 20, thereby enhancing the reverse mixing between materials. The reactor body 1 is equipped with a third stirring blade 20 that is rotatably sleeved inside. One side of the third stirring blade 20 penetrates the inner wall of the reactor body 1 and is fixedly installed on one side of the third transmission wheel 19. The inner wall of the third stirring blade 20 is provided with multiple drainage holes 21. Through the flow hole 21, the material can enter the third stirring blade 20 through the flow hole 21 during the rotation process, reducing obstruction and improving the smoothness of material mixing. The temperature control mechanism includes a discharge plate 6, a PLC controller 7, a partition 2, a discharge pipe 9, a solenoid valve 10, a groove 3, a discharge port, an installation port, an electric heating tube 22, and a support foot 11. The surfaces of multiple partitions 2 are all fixedly fitted inside the reactor body 1. The arc-shaped outer surface of the discharge pipe 9 is fixedly fitted at the center of the partition 2. The surface of the solenoid valve 10 is fixedly fitted inside the discharge pipe 9. The grooves 3 are all opened inside the reactor body 1. Both ends of the electric heating tube 22 are fixedly installed inside the reactor body 1. By setting up partition 2, the material can be layered, and stirring can be carried out according to the properties of different materials to improve the stirring effect. The heat of different partitions can be adjusted by PLC controller 7. The model of PLC controller 7 is set as ST89C51. PLC controller 7 is a field familiar to the technical personnel, so it will not be described in detail here. The discharge port is located on the upper end face of the reactor body 1, and the two sides of the discharge plate 6 are rotatably sleeved inside the reactor body 1. The discharge plate 6 allows workers to easily feed materials downward into the reactor body 1 when the discharge plate 6 is flipped upward. The mounting port is located on the upper end face of the reactor body 1. The surface of the PLC controller 7 is fixedly installed inside the reactor body 1. The upper end face of the support foot 11 is fixedly installed on the lower end face of the reactor body 1. The support foot 11 is configured as three feet.

[0019] The working principle of the above embodiments is as follows: When using it, firstly, the staff will flip the discharge plate 6 upwards so that the discharge port is exposed to the staff's line of sight; Subsequently, the material to be processed is placed downward into the reactor body 1, and the servo motor 13 is driven to work by the PLC controller 7. At the same time, the servo motor 13 drives the first transmission wheel 14, which in turn drives the belt 18. The belt 18 then drives the second transmission wheel 15 and the third transmission wheel 19 simultaneously, thus enabling the first stirring blade 16, the second stirring blade 17, and the third stirring blade 20 to rotate within the reactor body 1 at the same time. Since the first stirring blade 16 has the smallest diameter, it rotates smoothly clockwise inside the reactor body 1, which can stir the low-viscosity material in the upper layer and enhance the lateral clockwise disorder of the material. Since the first drive wheel 14 and the second drive wheel 15 are linked by a belt 18. However, the transmission direction of the belt 18 can be changed by the two third transmission wheels 19, so that the second rotating wheel clamped in the middle will inevitably rotate counterclockwise. Therefore, when the second transmission wheel 15 drives the second stirring blade 17; The second stirring blade 17 and the first stirring blade 16 are made to form a transverse convection, which enhances the transverse mixing of materials. At the same time, the third stirring blade 20 is also made to form a convection with the material above through the clockwise drive of the third drive wheel 19. Because the third stirring blade 20 is equipped with a flow-guiding hole 21, the resistance of high-viscosity materials can be reduced; The charging port 5 can supply power to the corresponding electric heating tube 22 and convert electrical energy into heat to heat the inner wall of the reactor body 1. Under the action of the PLC controller 7, the temperature of the material in each compartment of the reactor body 1 can be regulated. At the same time, it can also drive the opening and closing of the solenoid valve 10 to realize the discharge and blockage of materials.

[0020] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gradient temperature-controlled stirring mechanism for a solvent-free polyurethane synthesis reactor, comprising a reactor body (1), wherein the inner wall of the reactor body (1) is provided with multiple charging ports (5), characterized in that: The inner wall of the reactor body (1) is rotatably fitted with a stirring mechanism, and the inner wall of the reactor body (1) is fitted with a temperature control mechanism. The stirring mechanism includes a support plate (12), a servo motor (13), a belt (18), a first transmission wheel (14), a second transmission wheel (15), a third transmission wheel (19), a first stirring blade (16), a second stirring blade (17), a third stirring blade (20), and a drainage hole (21). One side of the support plate (12) is fixedly installed on the arc-shaped outer surface of the reactor body (1). The upper end face of the support plate (12) is fixedly connected to the lower end face of the servo motor (13). The inner walls of the first transmission wheel (14), the second transmission wheel (15), and the third transmission wheel (19) are all connected to one side of the belt (18).

2. The gradient temperature control stirring mechanism of the solvent-free polyurethane synthesis reactor according to claim 1, characterized in that: One end of the first stirring blade (16) passes through the inner wall of the reactor body (1) and is fixedly connected to one side of the first transmission wheel (14). The other end of the first stirring blade (16) is rotated and sleeved inside the reactor body (1). The output end of the servo motor (13) is fixedly installed on the inner wall of the first transmission wheel (14).

3. The gradient temperature control stirring mechanism of the solvent-free polyurethane synthesis reactor according to claim 1, characterized in that: One end of the second stirring blade (17) is rotated and sleeved inside the reactor body (1), and the other end of the second stirring blade (17) passes through the inner wall of the reactor body (1) and is fixedly connected to one side of the second drive wheel (15).

4. The gradient temperature control stirring mechanism of the solvent-free polyurethane synthesis reactor according to claim 1, characterized in that: The reactor body (1) is fitted with a third stirring blade (20) that rotates inside. One side of the third stirring blade (20) penetrates the inner wall of the reactor body (1) and is fixedly installed on one side of the third drive wheel (19). The inner wall of the third stirring blade (20) is provided with multiple drainage holes (21).

5. The gradient temperature control stirring mechanism of the solvent-free polyurethane synthesis reactor according to claim 1, characterized in that: The temperature control mechanism includes a discharge plate (6), a PLC controller (7), a partition (2), a discharge pipe (9), a solenoid valve (10), a groove (3), a discharge port, an installation port, an electric heating tube (22), and a support foot (11). The surfaces of multiple partitions (2) are fixedly fitted inside the reactor body (1). The arc-shaped outer surface of the discharge pipe (9) is fixedly fitted at the center of the partition (2). The surface of the solenoid valve (10) is fixedly fitted inside the discharge pipe (9). The grooves (3) are all opened inside the reactor body (1). Both ends of the electric heating tube (22) are fixedly installed inside the reactor body (1).

6. The gradient temperature control stirring mechanism of the solvent-free polyurethane synthesis reactor according to claim 5, characterized in that: The discharge port is located on the upper end face of the reactor body (1), and the two sides of the discharge plate (6) are rotatably sleeved inside the reactor body (1).

7. The gradient temperature control stirring mechanism of the solvent-free polyurethane synthesis reactor according to claim 5, characterized in that: The mounting port is located on the upper surface of the reactor body (1). The surface of the PLC controller (7) is fixedly installed inside the reactor body (1). The upper surface of the support foot (11) is fixedly installed on the lower surface of the reactor body (1). The support foot (11) is set to three feet.

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