A polyurethane adhesive production reactor

Abstract

The utility model discloses a polyurethane adhesive production reation kettle relates to the technical field of reation kettle, including the kettle body, the inner chamber rotation of kettle body is connected with the main shaft, one side fixed of kettle body has the drive part, the outside of drive part is provided with the first bevel gear, the utility model has the beneficial effects that: through the motor drive guide rod rotates in the kettle body, drives the first bevel gear and second bevel gear and third bevel gear mesh, the main shaft is under the positive rotation of second bevel gear, and the guide bushing reversely rotates under the drive of third bevel gear, and the strong axial flow is produced with the high -speed rotation of the guide bushing of the propulsion blade, and the polyurethane adhesive circulates, and the stirring frame and the stirring blade cooperate, and the liquid microcluster is broken with high shear force, and the chemical uniformity is promoted, and the scraper promptly scrapes the adherend of kettle inner wall, and effectively avoids the polyurethane adhesive deposition and the uneven heat transfer, and the multi -component cooperation realizes the high -efficient, uniform multistage synchronous stirring effect.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a reaction vessel for producing polyurethane adhesives. Background Technology

[0002] Alcohol-soluble polyurethane adhesive is a new type of environmentally friendly alcohol-soluble polyurethane adhesive that uses ethanol as a solvent. Its molecular chain contains urethane or isocyanate groups. The main agent is prepared by reacting polyether polyol with isocyanate and used in conjunction with modified epoxy resin curing agent. This alcohol-soluble polyurethane adhesive combines the advantages of solvent-based and water-based polyurethane. It is free from the toxicity of solvent-based adhesives and overcomes the disadvantage of slow evaporation of water-based adhesives. It features high transparency, high peel strength, good initial tack, and excellent water resistance. It is also inexpensive and insensitive to humidity. It is suitable for the composite bonding of food and pharmaceutical flexible packaging, and is especially suitable for the composite process of aluminized film and plastic film materials.

[0003] The production of polyurethane adhesives requires a reaction vessel because it can provide a stable and sealed environment, allowing raw materials such as polyisocyanates and polyols to be mixed and reacted uniformly under stirring, ensuring stable product performance, preventing leakage of toxic raw materials, and ensuring production safety.

[0004] Existing polyurethane adhesive production reactors typically feature single-layer fixed agitator blades lacking a tiered design. This leads to the high-viscosity polyurethane adhesives easily separating during mixing due to insufficient shear force, creating mixing dead zones at the reactor edges and bottom, affecting product uniformity. Furthermore, raw material addition relies on manual operation or electric valves, lacking a release mechanism. The addition amount is easily affected by human factors, leading to mixing errors. Moreover, electric valves are prone to clogging or malfunction in the viscous polyurethane adhesive environment, increasing operational complexity and maintenance costs. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A polyurethane adhesive production reactor includes a reactor body. A main shaft is rotatably connected to the inner cavity of the reactor body. A driving component is fixed to one side of the reactor body. A first conical tooth is provided on the outer side of the driving component. A second conical tooth and a third conical tooth are respectively meshed and connected to the outer side of the first conical tooth. The inner wall of the second conical tooth is fixed to the outer side of the main shaft, and the inner wall of the third conical tooth is rotatably connected to the outer side of the main shaft. A guide sleeve is sleeved on the outer side of the main shaft, and the top of the guide sleeve is fixed to the bottom of the third conical tooth. A stirring mechanism is provided on the outer side of the guide sleeve. A feeding component is provided on the top of the reactor body. A connecting pipe is provided on one side of the feeding component, and a flow control mechanism is provided inside the connecting pipe.

[0008] The stirring mechanism includes a propulsion blade and a stirring frame fixed to the outside of the guide sleeve. A scraper is fixed to the outside of the stirring frame, and a stirring blade is fixed to the outside of the main shaft.

[0009] The flow control mechanism includes a valve plug that is slidably connected to the inner wall of the connecting pipe. A connecting plate is sleeved on the outer side of the valve plug, and the inner wall of the connecting plate is rotatably connected to the outer side of the connecting pipe. A connecting plate is fixed on the outer side of the connecting plate, and a float is fixed on one side of the connecting plate.

[0010] In a preferred embodiment of the polyurethane adhesive production reactor of this utility model, the driving component includes a motor fixed to one side of the reactor body, a guide rod fixed to the output end of the motor, and the outer side of the guide rod is rotatably connected to the inner wall of the reactor body, and the outer side of the guide rod is fixed to the inner wall of the first conical tooth.

[0011] In a preferred embodiment of the polyurethane adhesive production reactor of this utility model, the feeding component includes a pump body fixed to the top of the reactor body, the discharge end of the pump body is connected to a feed pipe, and one end of the feed pipe is connected to one end of a connecting pipe.

[0012] In a preferred embodiment of the polyurethane adhesive production reactor of this utility model, the bottom of the reactor body is connected to a discharge pipe, and the inner wall of the discharge pipe is rotatably connected to a valve leaf.

[0013] In a preferred embodiment of the polyurethane adhesive production reactor of this utility model, a guide plate is fixed to one end of the valve leaf, and a spring is fixed to one side of the guide plate.

[0014] In a preferred embodiment of the polyurethane adhesive production reactor of this utility model, one end of the spring is fixed with a toothed plate, and the inner wall of the toothed plate is rotatably connected to the outer side of the guide plate.

[0015] In a preferred embodiment of the polyurethane adhesive production reactor of this utility model, a toothed column is meshed with the outer side of the toothed plate, one side of the toothed column is fixed to the outer side of the discharge pipe, and the inner wall of the toothed column is rotatably connected to the outer side of the valve leaf.

[0016] In summary, this utility model has the following beneficial effects: the guide rod is driven by a motor to rotate inside the vessel, causing the first bevel tooth to mesh with the second and third bevel teeth. The main shaft rotates forward under the action of the second bevel tooth, while the guide sleeve rotates in the opposite direction under the action of the third bevel tooth. The propeller blades rotate at high speed with the guide sleeve, generating strong axial flow and promoting the circulation of polyurethane adhesive. The stirring frame and stirring blades work together to break up liquid micro-particles with high shear force, improving chemical homogeneity. The scraper promptly removes the deposits on the inner wall of the vessel, effectively avoiding polyurethane adhesive deposition and uneven heat transfer. The multi-component collaboration achieves a highly efficient and uniform multi-stage synchronous stirring effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is an overall structural diagram of a reaction vessel for producing polyurethane adhesives.

[0019] Figure 2 Another perspective view of the overall structure of the reaction vessel for producing polyurethane adhesives.

[0020] Figure 3 A structural diagram of the drive component for a reaction vessel used in the production of polyurethane adhesives.

[0021] Figure 4 A structural diagram of the stirring mechanism in a reactor for producing polyurethane adhesives.

[0022] Figure 5 A structural diagram of the feed component of a reaction vessel for the production of polyurethane adhesives.

[0023] Figure 6 A structural diagram of the flow control mechanism for a reaction vessel used in the production of polyurethane adhesives.

[0024] Figure 7 A structural diagram of the valve blade of a reactor used for producing polyurethane adhesives.

[0025] Labels in the diagram: 1. Vessel body; 2. Main shaft; 3. Drive component; 31. Motor; 32. Guide rod; 4. First bevel gear; 5. Second bevel gear; 6. Third bevel gear; 7. Guide sleeve; 8. Stirring mechanism; 81. Propeller blade; 82. Stirring frame; 83. Scraper; 84. Stirring blade; 9. Feeding component; 91. Pump body; 92. Feed pipe; 10. Connecting pipe; 11. Flow control mechanism; 111. Valve plug; 112. Connecting plate; 113. Connecting plate; 114. Float; 12. Discharge pipe; 13. Valve blade; 14. Guide plate; 15. Spring; 16. Toothed plate; 17. Toothed column. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] Example 1:

[0030] Reference Figures 1 to 7 This is the first embodiment of the present invention. This embodiment provides a polyurethane adhesive production reactor, including a reactor body 1. A main shaft 2 is rotatably connected to the inner cavity of the reactor body 1. A driving component 3 is fixed to one side of the reactor body 1. A first conical tooth 4 is provided on the outer side of the driving component 3. A second conical tooth 5 and a third conical tooth 6 are respectively meshed and connected to the outer side of the first conical tooth 4. The inner wall of the second conical tooth 5 is fixed to the outer side of the main shaft 2, and the inner wall of the third conical tooth 6 is rotatably connected to the outer side of the main shaft 2. A guide sleeve 7 is sleeved on the outer side of the main shaft 2, and the top of the guide sleeve 7 is fixed to the bottom of the third conical tooth 6. A stirring mechanism 8 is provided on the outer side of the guide sleeve 7. A feeding component 9 is provided on the top of the reactor body 1. A connecting pipe 10 is provided on one side of the feeding component 9. A flow control mechanism 11 is provided inside the connecting pipe 10.

[0031] In processing polyurethane adhesive, the first bevel tooth 4 is driven to rotate by the drive component 3. The first bevel tooth 4 meshes with the second bevel tooth 5 and the third bevel tooth 6. The main shaft 2 rotates in the forward direction under the action of the second bevel tooth 5, while the guide sleeve 7 rotates in the reverse direction under the action of the third bevel tooth 6. This allows the stirring mechanism 8 to advance, scrape, and stir the polyurethane adhesive, achieving a highly efficient and uniform multi-stage synchronous stirring effect. In terms of feeding, the polyurethane adhesive is drawn into the connecting pipe 10 by the feeding component 9 and fed into the reactor body 1. When the amount of adhesive in the reactor body 1 reaches the required amount, the connecting pipe 10 cooperates with the flow control mechanism 11 to adjust the feed flow rate according to the actual situation in the reactor, avoiding waste of raw materials and overloading of the reactor body 1 due to excessive feeding.

[0032] The stirring mechanism 8 includes a propulsion blade 81 fixed to the outside of the guide sleeve 7 and a stirring frame 82. A scraper 83 is fixed to the outside of the stirring frame 82, and a stirring blade 84 is fixed to the outside of the main shaft 2.

[0033] The main shaft 2 rotates forward under the action of the second bevel tooth 5 and the third bevel tooth 6 through the meshing of the first bevel tooth 4 with the second bevel tooth 5 and the guide sleeve 7 rotates in the opposite direction under the action of the third bevel tooth 6. The propeller blade 81 generates a strong axial flow with the high-speed rotation of the guide sleeve 7, which promotes the circulation of polyurethane adhesive. The stirring frame 82 and the stirring blade 84 work together to break up liquid micro-particles with high shear force, thereby improving chemical homogeneity. The scraper 83 scrapes off the adhering material on the inner wall of the vessel 1 in time, effectively avoiding the deposition of polyurethane adhesive and uneven heat transfer. The multi-component collaboration achieves a highly efficient and uniform multi-stage synchronous stirring effect.

[0034] The flow control mechanism 11 includes a valve plug 111 slidably connected to the inner wall of the connecting pipe 10. A connecting plate 112 is sleeved on the outer side of the valve plug 111, and the inner wall of the connecting plate 112 is rotatably connected to the outer side of the connecting pipe 10. A connecting plate 113 is fixed on the outer side of the connecting plate 112, and a float ball 114 is fixed on one side of the connecting plate 113.

[0035] Polyurethane adhesive is circulated into the vessel body 1 through the connecting pipe 10. As the liquid level of the polyurethane adhesive in the vessel body 1 rises to the surface of the float 114, the float 114 floats upward under the action of buoyancy, driving the connecting plate 113 to move. This causes the connecting plate 112 to rotate along the outside of the connecting pipe 10, thereby causing the connecting plate 112 to slide between the two sets of limiting rings and push the valve plug 111 to fit tightly against the sealing ring inside the connecting pipe 10, thus closing the feed. When the liquid level of the polyurethane adhesive in the vessel body 1 is lower than the float 114... As the float 114 descends, the connecting plate 113 drives the connecting plate 112 to rotate along the outside of the connecting pipe 10, causing the connecting plate 112 to slide between the two sets of limiting rings. This allows the valve plug 111 to disengage from the sealing ring, restarting the feeding process. The up-and-down movement of the float 114 is converted into the opening and closing action of the valve plug 111. The flow rate is adjusted according to the height of the polyurethane adhesive liquid level in the reactor body 1, effectively ensuring the stability of the material quantity in the reactor body 1 and providing reliable support for the stable production of polyurethane adhesive.

[0036] It should be noted that: the connecting pipe 10 is T-shaped and has a sealing ring fixed on its inner wall. A set of limiting rings is provided on the outer side of the valve plug 111, and another set of limiting rings is provided at one end of the valve plug 111. The connecting plate 112 is located between the two sets of limiting rings. The connecting plate 112 slides between the two sets of limiting rings and pushes the valve plug 111 to fit tightly with the sealing ring inside the connecting pipe 10, thereby achieving the effect of closing the feed.

[0037] Example 2:

[0038] This is the second embodiment of the present invention, which is based on the previous embodiment.

[0039] Specifically, the driving component 3 includes a motor 31 fixed to one side of the vessel body 1. A guide rod 32 is fixed to the output end of the motor 31, and the outer side of the guide rod 32 is rotatably connected to the inner wall of the vessel body 1. The outer side of the guide rod 32 is fixed to the inner wall of the first bevel tooth 4.

[0040] The guide rod 32 is driven by motor 31 to rotate inside the vessel body 1, which drives the first bevel tooth 4 to mesh with the second bevel tooth 5 and the third bevel tooth 6. The main shaft 2 rotates in the forward direction under the action of the second bevel tooth 5, while the guide sleeve 7 rotates in the reverse direction under the action of the third bevel tooth 6, providing a stable power foundation for the subsequent stirring of polyurethane in the vessel body 1.

[0041] Specifically, the feed component 9 includes a pump body 91 fixed to the top of the vessel body 1, the discharge end of the pump body 91 is connected to a feed pipe 92, and one end of the feed pipe 92 is connected to one end of the connecting pipe 10.

[0042] The pump body 91 generates suction to extract the polyurethane adhesive, which is then fed into the reactor body 1 through the feed pipe 92 and the connecting pipe 10. This achieves stable and continuous feeding of the adhesive, ensuring that the chemical reaction in the reactor body 1 proceeds on time and in the correct quantity, thus ensuring the orderly progress of the production process and guaranteeing stable product quality.

[0043] Example 3:

[0044] This is the third embodiment of the present invention, which is based on the first two embodiments.

[0045] Specifically, the bottom of the vessel body 1 is connected to a discharge pipe 12, and the inner wall of the discharge pipe 12 is rotatably connected to a valve leaf 13.

[0046] The valve leaf 13 rotates within the discharge pipe 12, providing a discharge channel for the reacted polyurethane adhesive and facilitating product collection.

[0047] Specifically, a guide plate 14 is fixed to one end of the valve leaf 13, and a spring 15 is fixed to one side of the guide plate 14.

[0048] By rotating the guide plate 14, the valve leaf 13 is driven to open and close in the discharge pipe 12, providing a discharge channel for the reacted polyurethane adhesive and facilitating product collection. The spring 15 can provide an elastic limiting base for the guide plate 14 after the valve leaf 13 opens and closes, so as to keep it in a stable state and prevent random rotation from affecting the discharge control.

[0049] Specifically, one end of the spring 15 is fixed with a toothed plate 16, and the inner wall of the toothed plate 16 is rotatably connected to the outer side of the guide plate 14.

[0050] By pressing the toothed plate 16 to rotate along the guide plate 14 and compressing the spring 15, preparation is made for the subsequent opening and closing of the regulating valve leaf 13, thereby realizing the control of the opening and closing of the discharge pipe 12 and the discharge.

[0051] Specifically, a toothed post 17 is meshed with the outer side of the toothed plate 16. One side of the toothed post 17 is fixed to the outer side of the discharge pipe 12, and the inner wall of the toothed post 17 is rotatably connected to the outer side of the valve leaf 13.

[0052] The engagement of the toothed plate 16 and the toothed column 17 limits the adjustment of the guide plate 14, thereby achieving the effect of locking the valve leaf 13 after opening and closing.

[0053] During use, in the feeding stage:

[0054] The operator first connects the polyurethane adhesive to the pump body 91, turns on the pump body 91, and the pump body 91 generates suction to draw out the polyurethane adhesive. This adhesive is then fed into the vessel body 1 through the feed pipe 92 and connecting pipe 10. As the level of the polyurethane adhesive in the vessel body 1 rises to the surface of the float 114, the float 114 floats upwards due to buoyancy, causing the connecting plate 113 to move. This causes the connecting plate 112 to rotate along the outside of the connecting pipe 10, thereby allowing the connecting plate 112 to slide between the two sets of limiting rings and pushing the valve plug 111 to seal against the inside of the connecting pipe 10. When the rings are tightly fitted and the feed is closed, when the level of the polyurethane adhesive in the vessel 1 is lower than the float 114, the float 114 descends. Similarly, the connecting plate 113 drives the connecting plate 112 to rotate along the outside of the connecting pipe 10, so that the connecting plate 112 slides again between the two sets of limiting rings, allowing the valve plug 111 to disengage from the sealing ring and the feed is reopened. The up and down movement of the float 114 is converted into the opening and closing action of the valve plug 111. The flow rate is adjusted according to the height of the polyurethane adhesive in the vessel 1, effectively ensuring the stability of the material quantity in the vessel 1.

[0055] During the mixing stage of polyurethane adhesive:

[0056] After feeding is completed, motor 31 is turned on, which drives guide rod 32 to rotate inside the vessel 1. This causes the first bevel tooth 4 to mesh with the second bevel tooth 5 and the third bevel tooth 6. The main shaft 2 rotates forward under the action of the second bevel tooth 5, while the guide sleeve 7 rotates in the opposite direction under the action of the third bevel tooth 6. The propeller blade 81 rotates at high speed with the guide sleeve 7, generating strong axial flow and promoting the circulation of polyurethane adhesive. The stirring frame 82 and stirring blade 84 work together to break up liquid micro-particles with high shear force, improving chemical homogeneity. The scraper 83 promptly scrapes off the deposits on the inner wall of the vessel 1, effectively avoiding polyurethane adhesive deposition and uneven heat transfer. The multi-component collaboration achieves a highly efficient and uniform multi-stage synchronous stirring effect.

[0057] During the material discharge stage:

[0058] After processing is completed, the collection device is connected to the discharge pipe 12. The toothed plate 16 is pressed and rotated along the guide plate 14, and the spring 15 is compressed, so that the toothed plate 16 disengages from the toothed column 17, successfully unlocking the guide plate 14, which is then used to open and close the regulating valve 13. At this time, rotating the guide plate 14 drives the valve 13 to open and close in the discharge pipe 12. After releasing the toothed plate 16, the elasticity of the spring 15 drives the toothed plate 16 to rotate along the guide plate 14 again and re-engage with the toothed column 17, thus completing the limiting of the guide plate 14 and ensuring the stability of the valve 13 position. Finally, under the action of gravity, the polyurethane adhesive flows smoothly into the collection device through the discharge pipe 12, ensuring the continuity and stability of the discharge.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A polyurethane adhesive production reactor, comprising a reactor body (1), characterized in that: The inner cavity of the vessel body (1) is rotatably connected to a main shaft (2). A drive component (3) is fixed on one side of the vessel body (1). A first bevel tooth (4) is provided on the outer side of the drive component (3). A second bevel tooth (5) and a third bevel tooth (6) are respectively meshed on the outer side of the first bevel tooth (4). The inner wall of the second bevel tooth (5) is fixed to the outer side of the main shaft (2). The inner wall of the third bevel tooth (6) is rotatably connected to the outer side of the main shaft (2). A guide sleeve (7) is sleeved on the outer side of the main shaft (2). The top of the guide sleeve (7) is fixed to the bottom of the third bevel tooth (6). A stirring mechanism (8) is provided on the outer side of the guide sleeve (7). A feed component (9) is provided on the top of the vessel body (1). A connecting pipe (10) is provided on one side of the feed component (9). A flow control mechanism (11) is provided inside the connecting pipe (10). The stirring mechanism (8) includes a propulsion blade (81) fixed to the outside of the guide sleeve (7) and a stirring frame (82). A scraper (83) is fixed to the outside of the stirring frame (82), and a stirring blade (84) is fixed to the outside of the main shaft (2). The flow control mechanism (11) includes a valve plug (111) slidably connected to the inner wall of the connecting pipe (10). A connecting plate (112) is sleeved on the outer side of the valve plug (111), and the inner wall of the connecting plate (112) is rotatably connected to the outer side of the connecting pipe (10). A connecting plate (113) is fixed on the outer side of the connecting plate (112), and a float (114) is fixed on one side of the connecting plate (113).

2. The polyurethane adhesive production reactor as described in claim 1, characterized in that: The driving component (3) includes a motor (31) fixed to one side of the vessel body (1). The output end of the motor (31) is fixed with a guide rod (32), and the outer side of the guide rod (32) is rotatably connected to the inner wall of the vessel body (1), and the outer side of the guide rod (32) is fixed to the inner wall of the first bevel tooth (4).

3. The polyurethane adhesive production reactor as described in claim 1, characterized in that: The feed component (9) includes a pump body (91) fixed to the top of the vessel body (1), the discharge end of the pump body (91) is connected to a feed pipe (92), and one end of the feed pipe (92) is connected to one end of the connecting pipe (10).

4. The polyurethane adhesive production reactor as described in claim 1, characterized in that: The bottom of the vessel body (1) is connected to a discharge pipe (12), and the inner wall of the discharge pipe (12) is rotatably connected to a valve leaf (13).

5. The polyurethane adhesive production reactor as described in claim 4, characterized in that: One end of the valve leaf (13) is fixed with a guide plate (14), and a spring (15) is fixed on one side of the guide plate (14).

6. The polyurethane adhesive production reactor as described in claim 5, characterized in that: One end of the spring (15) is fixed with a toothed plate (16), and the inner wall of the toothed plate (16) is rotatably connected to the outer side of the guide plate (14).

7. The polyurethane adhesive production reactor as described in claim 6, characterized in that: The toothed plate (16) is meshed with a toothed column (17) on the outside. One side of the toothed column (17) is fixed to the outside of the discharge pipe (12), and the inner wall of the toothed column (17) is rotatably connected to the outside of the valve leaf (13).

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