An isocyanate mixing device for composite materials

Abstract

This utility model discloses an isocyanate mixing device for composite materials, including a primary mixing chamber, a feed channel, a secondary mixing chamber, and a stirring component. The feed channel is located at one end of the top of the primary mixing chamber. A stirring component is positioned at the center of the primary mixing chamber via a rotating shaft. The secondary mixing chamber is located at the bottom of the primary mixing chamber, and nozzles are located on both sides of the secondary mixing chamber. Two sets of water pumps are located at the bottom of the primary mixing chamber, and the output ends of the water pumps are connected to the nozzles via liquid guide pipes. An impact plate is installed in the secondary mixing chamber between the nozzles. This utility model, by installing a primary mixing chamber, rotating shaft, stirring component, spiral blades, drive motor, secondary mixing chamber, nozzles, liquid guide pipes, water pumps, and impact plate, enables materials to achieve deep mixing in a short time, significantly improving mixing uniformity and thus enhancing the quality of the subsequently prepared composite materials.

Description

Technical Field

[0001] This utility model relates to the field of isocyanate mixing technology, specifically to an isocyanate mixing device for composite materials. Background Technology

[0002] The isocyanate mixing device for composite materials is a device specifically designed to uniformly mix isocyanates (such as MDI, TDI, etc.) with other components (such as polyols, fillers, additives, etc.) to prepare polyurethane (PU) or other composite materials. Isocyanates are a key raw material for polyurethane reactions, and their mixing effect with other components directly affects the performance of the final product (such as strength, elasticity, cell structure, etc.).

[0003] Existing mixing devices are mostly single mixing chambers, and most adopt a single stirring chamber structure. They rely on the rotation of the stirring paddle to achieve material mixing. They rely solely on simple stirring blades for mixing, which results in low mixing efficiency and makes it difficult to achieve rapid and uniform mixing of materials. Therefore, there is a need for an isocyanate mixing device for composite materials. Utility Model Content

[0004] The purpose of this invention is to provide an isocyanate mixing device for composite materials, so as to solve the problem of poor mixing effect mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an isocyanate mixing device for composite materials, comprising a primary mixing chamber, a feeding channel, a secondary mixing chamber, and a stirring component. The primary mixing chamber has a feeding channel at one end of its top, and the bottom end of the feeding channel is connected to the primary mixing chamber via a feeding pipe. A stirring component is positioned at the center of the primary mixing chamber via a rotating shaft, and a drive motor is fixed at the center of the top of the primary mixing chamber. The output end of the drive motor is connected to the rotating shaft. A secondary mixing chamber is located at the bottom of the primary mixing chamber, and nozzles are provided on both sides of the secondary mixing chamber. Two sets of water pumps are located at the bottom of the primary mixing chamber, and the output ends of the water pumps are connected to the nozzles via liquid guide pipes. An impact plate is provided in the secondary mixing chamber between the nozzles, and discharge pipes are provided at both ends of the bottom of the secondary mixing chamber.

[0006] As a further technical solution of this utility model, all the nozzles are high-pressure nozzles, and the nozzles are symmetrically distributed about the impact plate.

[0007] As a further technical solution of this utility model, the impact plate has an arc-shaped structure, and protrusions are evenly distributed on the arc surface of the impact plate.

[0008] As a further technical solution of this utility model, a jacket is provided on the outside of the primary mixing chamber, and an air inlet and an air outlet are respectively provided on both sides of the jacket.

[0009] As a further technical solution of this utility model, a spiral blade is provided at the central position of the rotating shaft, and each spiral blade is provided with a through hole.

[0010] As a further technical solution of this utility model, a piston plate is provided at one end of the inside of the feeding channel, and a cylinder is provided at one end of the feeding channel. The output end of the cylinder is connected to the piston plate through a telescopic rod, and a raw material inlet pipe is provided at one end of the top of the feeding channel.

[0011] As a further technical solution of this utility model, a groove is provided at the top of the inside of the feeding channel, and a lead screw is provided inside the groove. A driving block is sleeved on the lead screw, and a limit switch is provided on the top of the driving block through a bracket.

[0012] As a further technical solution of this utility model, a micro motor is fixed to the top of one end of the feeding channel, and the output end of the micro motor is connected to the lead screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The isocyanate mixing device for composite materials is equipped with a primary mixing chamber, a rotating shaft, a stirring component, a spiral blade, a drive motor, a secondary mixing chamber, nozzles, a liquid guide pipe, a water pump, and an impact plate. Isocyanate raw materials and additives are introduced into the primary mixing chamber. The drive motor drives the rotating shaft and the stirring component to rotate, stirring and mixing the isocyanate raw materials and additives. A spiral blade is set in the center of the rotating shaft, which continuously tumbles the mixture upward, improving the uniformity of the initial mixing. Then, the water pump works, sucking the initially mixed mixture into the liquid guide pipe and spraying it out through the nozzle in the secondary mixing chamber. The two nozzles are set opposite each other, spraying the material after primary mixing at high speed, forming two high-speed jets that collide violently at the impact plate. The impact plate has an arc-shaped structure, which can change the reflection direction of the material, making the material diffuse in all directions and forming more complex turbulence. The surface of the impact plate is uniformly distributed with protrusions, which further disrupts the flow trajectory of the material, increases the number of impacts and the intensity of turbulence, and allows the material to achieve deep mixing in a short time, greatly improving the mixing uniformity, and thus improving the quality of the composite material prepared subsequently. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a frontal cross-sectional view of the present invention.

[0016] Figure 2 This is a schematic cross-sectional view of the two-stage mixing chamber of this utility model;

[0017] Figure 3 This is a schematic diagram of the stirring component structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the feeding channel of this utility model;

[0019] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Primary mixing chamber; 2. Feed channel; 3. Feed pipe; 4. Rotary shaft; 5. Drive motor; 6. Secondary mixing chamber; 7. Water pump; 8. Liquid guide pipe; 9. Jacket; 10. Impact plate; 11. Protrusion; 12. Nozzle; 13. Discharge pipe; 14. Spiral blade; 15. Stirring component; 16. Raw material inlet pipe; 17. Piston plate; 18. Micro motor; 19. Cylinder; 20. Lead screw; 21. Drive block; 22. Support; 23. Limit switch; 24. Groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-5 An embodiment of this utility model is provided: a composite material isocyanate mixing device, including a primary mixing chamber 1, a feeding channel 2, a secondary mixing chamber 6 and a stirring component 15. The feeding channel 2 is provided at one end of the top of the primary mixing chamber 1, and the bottom end of the feeding channel 2 is connected to the primary mixing chamber 1 through a feeding pipe 3.

[0023] A piston plate 17 is provided at one end of the feed channel 2, and a cylinder 19 is provided at one end of the feed channel 2. The output end of the cylinder 19 is connected to the piston plate 17 through a telescopic rod. A raw material inlet pipe 16 is provided at one end of the top of the feed channel 2.

[0024] The top of the feed channel 2 is provided with a groove 24, and a lead screw 20 is provided inside the groove 24. A drive block 21 is sleeved on the lead screw 20, and a limit switch 23 is provided on the top of the drive block 21 through a bracket 22.

[0025] Isocyanate raw material enters feed channel 2 through raw material inlet pipe 16. Cylinder 19 works, and its output end drives piston plate 17 to move in feed channel 2 through telescopic rod until one side of piston plate 17 contacts limit switch 23.

[0026] When the piston plate 17 touches the limit switch 23, it sends a signal to the control system to stop the cylinder 19 from moving, thereby precisely controlling the stroke of the piston plate 17 and achieving precise control of the isocyanate raw material.

[0027] A micro motor 18 is fixed to the top of one end of the feeding channel 2, and the output end of the micro motor 18 is connected to the lead screw 20.

[0028] The micro motor 18 drives the lead screw 20 to rotate, causing the drive block 21 to move along the lead screw 20. This, in turn, drives the limit switch 23 to change its position via the bracket 22. This allows for adjustments to be made at any time according to mixed requirements, thus improving applicability.

[0029] Then, when the cylinder 19 drives the piston plate 17 to move closer to the feed pipe 3, it pushes the raw material in the feed channel 2 to the feed pipe 3 and then sends it into the primary mixing chamber 1. At the same time, additives are added through the top addition port.

[0030] A stirring element 15 is installed in the center of the primary mixing chamber 1 via a rotating shaft 4, and a drive motor 5 is fixed in the center of the top of the primary mixing chamber 1. The output end of the drive motor 5 is connected to the rotating shaft 4, and a spiral blade 14 is installed in the center of the rotating shaft 4.

[0031] When the drive motor 5 is working, its output end drives the rotating shaft 4 to rotate, which in turn causes the stirring component 15 and the spiral blade 14 to rotate. The spiral blade 14 continuously tumbles the mixture upwards, while the stirring component 15 stirs the material. The through holes on the spiral blade 14 can promote material convection and achieve the initial mixing of isocyanate raw materials and additives.

[0032] Each of the spiral blades 14 has through holes. When the material is pushed by the spiral blades 14, some of the material will pass through the through holes and flow from one side of the blade to the other side, forming local lateral convection and turbulence, which together with the longitudinal push of the blades form a multidimensional flow state.

[0033] A jacket 9 is provided on the outside of the primary mixing chamber 1, and an air inlet and an air outlet are provided on both sides of the jacket 9 respectively. Temperature regulating medium steam is introduced through the air inlet and air outlet on both sides of the jacket 9 to control the temperature of the material in the primary mixing chamber 1 to meet the requirements of the mixing reaction.

[0034] A secondary mixing chamber 6 is provided at the bottom of the primary mixing chamber 1, and nozzles 12 are provided on both sides inside the secondary mixing chamber 6. Two sets of water pumps 7 are provided at the bottom inside the primary mixing chamber 1, and the output ends of the water pumps 7 are connected to the nozzles 12 through the liquid guide pipes 8. An impact plate 10 is provided in the secondary mixing chamber 6 between the nozzles 12.

[0035] Then, the two sets of water pumps 7 at the bottom of the primary mixing chamber 1 work to transport the pre-mixed mixture through the liquid guide pipe 8 to the nozzle 12 in the secondary mixing chamber 6, and the nozzle 12 sprays the material out at high speed.

[0036] All nozzles 12 are high-pressure nozzles, and the nozzles 12 are symmetrically distributed about the impact plate 10. The two high-speed jets collide violently at the impact plate 10. The impact plate 10 has an arc-shaped structure, which can change the reflection direction of the material and make the material spread in all directions to form more complex turbulence.

[0037] The impact plate 10 has evenly distributed protrusions 11 on its surface, which further disrupts the flow trajectory of the material, increases the number of impacts and turbulence intensity, and allows the material to achieve deep mixing in a short time, greatly improving the mixing uniformity.

[0038] Both ends of the bottom of the secondary mixing chamber 6 are equipped with discharge pipes 13, and the final mixed material is discharged through the discharge pipes 13;

[0039] The specific models and specifications of the drive motor 5, water pump 7, micro motor 18, cylinder 19, and limit switch 23 need to be determined based on the specifications and parameters of the device. The selection and calculation method is existing technology, so it will not be described in detail here.

[0040] Working Principle: In this embodiment, isocyanate raw material enters the feed channel 2 through the raw material inlet pipe 16. The cylinder 19 operates, and its output end drives the piston plate 17 to move within the feed channel 2 via a telescopic rod until one side of the piston plate 17 contacts the limit switch 23. When the piston plate 17 touches the limit switch 23, it sends a signal to the control system, causing the cylinder 19 to stop. This precisely controls the stroke of the piston plate 17, achieving precise control of the isocyanate raw material. Simultaneously, the micro motor 18 drives the lead screw 20. Rotation causes the drive block 21 to move along the lead screw 20, thereby driving the limit switch 23 to change its position via the bracket 22. This can be adjusted at any time according to mixing needs, improving applicability. Then, when the cylinder 19 drives the piston plate 17 to move closer to the feed pipe 3, it pushes the raw materials in the feed channel 2 into the feed pipe 3, and then sends them into the primary mixing chamber 1. At the same time, additives are added through the top addition port. Then, the drive motor 5 works, and its output end drives the rotating shaft 4 to rotate, thereby causing the stirring component 15 and the spiral blade 14 to rotate. The spiral blade 14 will... The mixture continuously tumbles upwards, while the agitator 15 stirs the material. The through holes on the spiral blades 14 promote material convection, achieving preliminary mixing of isocyanate raw materials and additives. Temperature regulating medium is introduced through the air inlets and outlets on both sides of the jacket 9 to control the temperature of the material in the primary mixing chamber 1 to meet the requirements of the mixing reaction. Then, two sets of water pumps 7 at the bottom of the primary mixing chamber 1 work to transport the pre-mixed mixture through the liquid guide pipe 8 to the nozzles 12 in the secondary mixing chamber 6. The nozzles 12 spray the material at high speed. Since the nozzles 12 are high-pressure nozzles and are symmetrically distributed about the impact plate 10, the two high-speed jets collide violently at the impact plate 10. The impact plate 10 has an arc-shaped structure, which can change the reflection direction of the material, making the material spread in all directions and forming more complex turbulence. The surface of the impact plate 10 is uniformly distributed with protrusions 11, which further disrupts the flow trajectory of the material, increases the number of impacts and the intensity of turbulence, and allows the material to achieve deep mixing in a short time, greatly improving the mixing uniformity. Finally, the mixed material is discharged through the discharge pipe 13.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An isocyanate mixing device for composite materials, characterized by, The system includes a primary mixing chamber (1), a feeding channel (2), a secondary mixing chamber (6), and a stirring component (15). The primary mixing chamber (1) has a feeding channel (2) at one end of its top, and the bottom end of the feeding channel (2) is connected to the primary mixing chamber (1) via a feeding pipe (3). A stirring component (15) is installed in the center of the primary mixing chamber (1) via a rotating shaft (4). A drive motor (5) is fixed in the center of the top of the primary mixing chamber (1). The output of the drive motor (5)... The end is connected to the rotating shaft (4). The bottom of the primary mixing chamber (1) is provided with a secondary mixing chamber (6). Both sides of the secondary mixing chamber (6) are provided with nozzles (12). The bottom of the primary mixing chamber (1) is provided with two sets of water pumps (7). The output ends of the water pumps (7) are connected to the nozzles (12) through the liquid guide pipes (8). The secondary mixing chamber (6) between the nozzles (12) is provided with an impact plate (10). Both ends of the bottom of the secondary mixing chamber (6) are provided with discharge pipes (13).

2. The isocyanate mixing device for composite materials according to claim 1, characterized in that: All nozzles (12) are high-pressure nozzles, and the nozzles (12) are symmetrically distributed about the impact plate (10).

3. The isocyanate mixing device for composite materials according to claim 1, characterized in that: The impact plate (10) has an arc-shaped structure, and protrusions (11) are evenly distributed on the arc surface of the impact plate (10).

4. The isocyanate mixing device for composite materials according to claim 1, characterized in that: The outer side of the primary mixing chamber (1) is provided with a jacket (9), and the jacket (9) is provided with an air inlet and an air outlet on both sides respectively.

5. The isocyanate mixing device for composite materials according to claim 1, characterized in that: A spiral blade (14) is provided at the center of the rotating shaft (4), and each spiral blade (14) has a through hole.

6. The isocyanate mixing device for composites of claim 1, wherein: A piston plate (17) is provided at one end of the feed channel (2), and a cylinder (19) is provided at one end of the feed channel (2). The output end of the cylinder (19) is connected to the piston plate (17) through a telescopic rod. A raw material inlet pipe (16) is provided at one end of the top of the feed channel (2).

7. The isocyanate mixing device for composites of claim 1, wherein: The top of the feed channel (2) is provided with a groove (24), and a lead screw (20) is provided inside the groove (24). A drive block (21) is sleeved on the lead screw (20), and a limit switch (23) is provided on the top of the drive block (21) through a bracket (22).

8. The isocyanate mixing device for composite materials according to claim 7, characterized in that: A micro motor (18) is fixed at the top of one end of the feeding channel (2), and the output end of the micro motor (18) is connected to the lead screw (20).

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