A low viscosity moisture dual-curing polyurethane hot melt adhesive production raw material mixing device

Abstract

The utility model relates to hot melt adhesive production technical field discloses a kind of raw material mixing equipment for low viscosity moisture dual-curing polyurethane hot melt adhesive production, including motor, the motor is fixedly connected in the bottom side middle part of reaction kettle, the output end of the motor is through reaction kettle and is fixedly connected with transmission rod, the outside of the transmission rod is fixedly connected with connecting rod, the left and right sides of the connecting rod are rotatably connected with stirring rod one, the bottom end of the stirring rod one is fixedly connected with gear, the inside bottom of the reaction kettle is fixedly connected with gear ring. In the utility model, the motor drives transmission rod to make stirring rod revolution, the bottom gear is engaged with kettle bottom gear ring while causing autorotation, transmission rod drives another stirring rod high-speed rotation by speed increaser, drives dispersion disc to form high shear, low-speed paddle transports material to high-speed area, circulation and shear synergy realize global flow, effectively solve the shear uneven and mixed dead angle problem of traditional stirring.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive production technology, and in particular to a raw material mixing device for the production of low viscosity moisture-curing dual-curing polyurethane hot melt adhesive. Background Technology

[0002] Hot melt adhesive production refers to the process of melting and mixing thermoplastic polymers, tackifying resins, plasticizers, and antioxidants in a high-temperature melting reactor according to a specific formula, followed by cooling, molding, and pelletizing to finally produce adhesive products. Its core lies in achieving full fusion and performance stability of the raw materials. In order to facilitate rapid mixing of hot melt adhesive production raw materials, a raw material mixing equipment for low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive production is required.

[0003] A raw material mixing device for the production of low-viscosity moisture-curing polyurethane hot melt adhesive refers to a device that, in a moisture-isolated closed system, uniformly disperses low-viscosity prepolymers, catalysts, and other additives through precise temperature control and efficient stirring, ensuring that the mixture achieves stable moisture-curing and photothermal curing properties in subsequent applications.

[0004] Currently, a type of raw material mixing equipment for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive consists of a single anchor or paddle mixer. It mixes the raw materials by generating convection through the rotation of the mixer. However, due to the uneven distribution of shear force and the existence of mixing dead zones during operation, it is difficult to achieve homogeneous dispersion of prepolymer and additives, resulting in unstable performance of the final adhesive and failing to meet the needs of users. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a raw material mixing device for the production of low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive, aiming to improve the problem of uneven shear force distribution and the existence of mixing dead zones in the operation of a raw material mixing device for the production of low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a raw material mixing device for the production of low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive, comprising a reaction vessel, a lid on the top of the reaction vessel, a mixing mechanism on the inner side of the reaction vessel, the mixing mechanism being used to uniformly mix the materials added to the vessel and ensure the quality of the mixed materials, and a loading and unloading mechanism being provided inside the reaction vessel, the loading and unloading mechanism being used to quickly install and disassemble the stirring device to ensure that there are no dead corners during cleaning and to avoid material residue that would affect the subsequent mixing quality;

[0007] The mixing mechanism includes a motor, which is fixedly connected to the bottom center of the reactor. The output end of the motor passes through the reactor and is fixedly connected to a transmission rod. A connecting rod is fixedly connected to the outer side of the transmission rod. A stirring rod is rotatably connected to both the left and right sides of the connecting rod. A gear is fixedly connected to the bottom end of the stirring rod. A gear ring is fixedly connected to the bottom inner side of the reactor. The gear meshes with the gear ring. A stirring paddle is engaged on the outer side of the stirring rod. An accelerator is provided at the top of the transmission rod. The top end of the transmission rod is fixedly connected to the input end of the accelerator. A second stirring rod is fixedly connected to the output end of the accelerator. A dispersion disc is fixedly connected to the outer top of the second stirring rod. A reactor lid is fixedly connected to the top of the reactor. An isolation component is provided on the outer side of the stirring rod. A feeding component is provided on the outer side of the reactor lid. A discharge component is provided on the right side of the reactor.

[0008] As a further description of the above technical solution:

[0009] The loading and unloading mechanism includes springs, two of which are fixedly connected to the left and right sides of the inside of the stirring paddle, respectively. A locking block is fixedly connected to the outside of the springs, and the locking block is slidably connected to the inner wall of the stirring paddle. The locking block engages with a stirring rod. A lead screw is rotatably connected inside the stirring rod, and a knob is fixedly connected to the top of the lead screw through the stirring rod. A top plate is threadedly connected to the outside of the lead screw. Limiting blocks are fixedly connected to the front and rear sides of the top plate. The top plate is slidably connected to the stirring rod through the two limiting blocks. An observation component is provided on the outside of the reaction vessel, and a support component is provided at the bottom of the reaction vessel.

[0010] As a further description of the above technical solution:

[0011] The isolation assembly includes an isolation disk, which is rotatably connected to the outside of the second stirring rod. The left and right sides of the inside of the isolation disk are respectively rotatably connected to two first stirring rods. The inner wall of the reactor is fixedly connected to a second fixing ring, which is rotatably connected to the isolation disk. The upper and lower sides of the isolation disk are rotatably connected to first fixing rings, and both first fixing rings are rotatably connected to the second stirring rod.

[0012] As a further description of the above technical solution:

[0013] The feeding assembly includes a feeding pipe that is connected to the top of the vessel lid, and a sealing cap is threaded onto the outside of the feeding pipe.

[0014] As a further description of the above technical solution:

[0015] The discharge assembly includes a discharge pipe connected to the right side of the reactor, and a valve is rotatably connected to the outside of the discharge pipe.

[0016] As a further description of the above technical solution:

[0017] A sealing ring is fixedly connected to the top of the stirring rod, and the top of the sealing ring is rotatably connected to the knob.

[0018] As a further description of the above technical solution:

[0019] The observation component includes an observation window, which is fixedly connected to the front side of the reactor, and multiple scale lines are provided on the outer side of the observation window.

[0020] As a further description of the above technical solution:

[0021] The support assembly includes a support frame, which is fixedly connected to the bottom of the reactor, and buffer pads are fixedly connected to all four sides of the bottom of the support frame.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this invention, a motor drives a transmission rod to rotate the connecting rod and the stirring rod together. A bottom gear meshes with a gear ring at the bottom of the vessel, forcing the stirring rod to rotate simultaneously with its own axis, creating a large-scale fluid circulation. Simultaneously, the transmission rod drives another stirring rod to rotate at high speed via a speed increaser, causing the dispersion disc to generate high-intensity shear. The low-speed stirring paddle continuously delivers material to the action zone of the high-speed dispersion disc, achieving a synergy between circulation and shear to ensure full-area material flow, thus solving the problems of uneven shear and mixing dead zones in traditional mixing processes.

[0024] 2. In this utility model, when disassembling, rotating the knob drives the lead screw, pushing the top plate upward along the limit block, pressing the locking block back into the mixing paddle to release the locking, thereby realizing the quick disassembly and assembly of the mixing paddle to facilitate thorough cleaning of all surfaces to avoid residue. The sealing ring can prevent materials from entering the mixing rod and causing the lead screw to jam. The above ensures convenient maintenance of the mixing components, and at the same time ensures that the equipment is in a clean state before each use, thereby maintaining stable product quality. Attached Figure Description

[0025] Figure 1 This is a perspective view of a raw material mixing device for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to the present invention.

[0026] Figure 2 This is a front view of a raw material mixing device for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to the present invention.

[0027] Figure 3 This is a partial structural cross-sectional view of a raw material mixing device for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive proposed in this utility model.

[0028] Figure 4This is a partial structural exploded view of the mixing mechanism of a raw material mixing device for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive proposed in this utility model.

[0029] Figure 5 This is a partial structural exploded view of the loading and unloading mechanism of a raw material mixing equipment for the production of low-viscosity moisture-curing polyurethane hot melt adhesive proposed in this utility model.

[0030] Legend:

[0031] 1. Reactor; 2. Mixing mechanism; 21. Motor; 22. Transmission rod; 23. Connecting rod; 24. Stirring rod one; 25. Gear; 26. Gear ring; 27. Isolation assembly; 271. Isolation disc; 272. Fixing ring one; 273. Fixing ring two; 28. Feeding assembly; 281. Feeding pipe; 282. Sealing cover; 29. ​​Discharge assembly; 291. Discharge pipe; 292. Valve; 210. Stirring paddle; 211. Speed ​​increaser; 212. Stirring rod two; 213. Dispersion disc; 3. Loading and unloading mechanism; 31. Spring; 32. Clamping block; 33. Lead screw; 34. Knob; 35. Top plate; 36. Limiting block; 37. Sealing ring; 38. Observation assembly; 381. Observation window; 382. Scale line; 39. Support assembly; 391. Support frame; 392. Buffer pad; 4. Reactor lid. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 3 and Figure 4 The present invention provides an embodiment of a raw material mixing device for the production of low-viscosity moisture-curing polyurethane hot melt adhesive, comprising a reaction vessel 1, a lid 4 on the top of the reaction vessel 1, a mixing mechanism 2 on the inner side of the reaction vessel 1, the mixing mechanism 2 being used to uniformly mix the materials added to the vessel and ensure the quality of the mixed materials, and a loading and unloading mechanism 3 being provided inside the reaction vessel 1, the loading and unloading mechanism 3 being used to quickly install and disassemble the stirring device to ensure that there are no dead corners during cleaning and to avoid material residue that would affect the subsequent mixing quality;

[0034] The mixing mechanism 2 includes a motor 21, which is fixedly connected to the bottom center of the reactor 1. The output end of the motor 21 passes through the reactor 1 and is fixedly connected to a transmission rod 22. When the motor 21 is started, it drives the transmission rod 22 to rotate. A connecting rod 23 is fixedly connected to the outside of the transmission rod 22. When the transmission rod 22 rotates, it drives the connecting rod 23 to rotate synchronously. Stirring rods 24 are rotatably connected to both the left and right sides of the connecting rod 23. When the connecting rod 23 rotates, it drives the stirring rods 24 to revolve around the transmission rod 22. A toothed part is fixedly connected to the bottom end of the stirring rods 24. A gear 25 is fixedly connected to the inner bottom of the reactor 1. The gear 25 meshes with the gear ring 26. When the stirring rod 24 revolves around the transmission rod 22, it drives the gear 25 to rotate synchronously. Due to the meshing of the gear 25 and the gear ring 26, the stirring rod 24 rotates on its own axis while revolving around the transmission rod 22. A stirring paddle 210 is engaged on the outer side of the stirring rod 24. When the stirring rod 24 rotates, it drives the stirring paddle 210 to rotate synchronously. The revolution and rotation of the stirring paddle 210 cause the material in the reactor to flow continuously, thereby ensuring thorough mixing. To eliminate mixing dead zones, a speed increaser 211 is installed at the top of the transmission rod 22. The top of the transmission rod 22 is fixedly connected to the input end of the speed increaser 211, and the output end of the speed increaser 211 is fixedly connected to the stirring rod 212. The speed increaser 211 amplifies the rotational speed of the transmission rod 22 and outputs it to the stirring rod 212. A dispersing disc 213 is fixedly connected to the outer top of the stirring rod 212. When the stirring rod 212 rotates, it drives the dispersing disc 213 to rotate synchronously. The low-speed rotating stirring paddle 210 causes the material to flow in a broad and gentle manner. The body moves and pushes it into the shear zone. The shear force generated by the high-speed rotating dispersion disk 213 at high speed breaks up the clumps and evenly disperses the filler and catalyst, thereby ensuring that the shear force is evenly distributed and there are no dead corners in the mixing during operation. The top of the reactor 1 is fixedly connected to the lid 4. By installing the lid 4, the inside of the reactor is sealed to prevent impurities from entering the reactor and affecting the quality of the output material. An isolation component 27 is provided on the outside of the stirring rod 24, a feeding component 28 is provided on the outside of the lid 4, and a discharge component 29 is provided on the right side of the reactor 1.

[0035] Specifically, motor 21 is fixedly connected to the bottom center of reactor 1. The output end of motor 21 passes through reactor 1 and is fixedly connected to transmission rod 22. When motor 21 is started, it drives transmission rod 22 to rotate. A connecting rod 23 is fixedly connected to the outside of transmission rod 22. When transmission rod 22 rotates, it drives connecting rod 23 to rotate synchronously. Stirring rod 24 is rotatably connected to the left and right sides of connecting rod 23, respectively. When connecting rod 23 rotates, it drives stirring rod 24 to revolve around transmission rod 22. A gear is fixedly connected to the bottom end of stirring rod 24. 25. A gear ring 26 is fixedly connected to the inner bottom of the reactor 1. Gear 25 meshes with gear ring 26. When stirring rod 24 revolves around transmission rod 22, it drives gear 25 to rotate synchronously. The meshing action of gear 25 and gear ring 26 causes stirring rod 24 to rotate on its own axis while revolving around transmission rod 22. A stirring paddle 210 is engaged on the outer side of stirring rod 24. When stirring rod 24 rotates, it drives stirring paddle 210 to move synchronously. The revolution and rotation of stirring paddle 210 cause the material in reactor 1 to flow. The range covers the inner wall and central area of ​​reactor 1, achieving thorough mixing of materials. A speed increaser 211 is installed at the top of the transmission rod 22, and the top of the transmission rod 22 is fixedly connected to the input end of the speed increaser 211. A stirring rod 212 is fixedly connected to the output end of the speed increaser 211. The speed increaser 211 increases the rotational speed of the transmission rod 22 and transmits it to the stirring rod 212. A dispersing disk 213 is fixedly connected to the outer top of the stirring rod 212. When the stirring rod 212 rotates, it drives the dispersing disk 213 to rotate synchronously, thus mixing the materials. The low-speed movement of the paddle 210 causes the material to undergo a wide fluid motion and pushes the material to the area where the dispersion disc 213 is located. The high-speed rotation of the dispersion disc 213 generates shear force, which breaks up the clumps in the material and makes the filler and catalyst evenly dispersed. This structure makes the material form a circulating flow in the reactor 1, eliminating mixing dead zones and thus improving the mixing uniformity. The top of the reactor 1 is fixedly connected to the lid 4, which keeps the inside of the reactor 1 sealed, preventing external impurities from entering the reactor 1 and ensuring the stable quality of the produced material.

[0036] Reference Figure 2 , Figure 3 and Figure 5The loading and unloading mechanism 3 includes two springs 31, which are fixedly connected to the left and right sides of the inside of the stirring paddle 210, respectively. A locking block 32 is fixedly connected to the outside of the springs 31, and the locking block 32 is slidably connected to the inner wall of the stirring paddle 210. When the locking block 32 is compressed, it retracts into the stirring paddle 210 and compresses the springs 31, engaging with the stirring rod 24. When the locking block 32 retracts into the stirring paddle 210, it disengages from the stirring rod 24. A lead screw 33 is rotatably connected inside the stirring rod 24. The top end of the lead screw 33 passes through the stirring rod 24 and is fixedly connected to a knob 34. Rotating the knob 34 drives the lead screw 33 to rotate. A top plate 35 is threadedly connected to the outside of the lead screw 33. Limiting blocks 36 are fixedly connected to the front and rear sides of the top plate 35. The top plate 35 is connected to the stirring rod via the two limiting blocks 36. The stirring rod 24 is slidably connected. When the lead screw 33 rotates, it drives the top plate 35 to slide up and down along the inner wall of the stirring rod 24. When the top plate 35 moves up, it pushes the locking block 32 out of the stirring rod 24 to release the locking. At this time, the stirring paddle 210 can be taken out from the stirring rod 24 for cleaning or replacement. This prevents the residual material on the stirring paddle 210 from not being completely cleaned due to cleaning dead corners during equipment cleaning, which would affect the quality of subsequent material mixing. An observation component 38 is provided on the outside of the reactor 1, and a support component 39 is provided at the bottom of the reactor 1. A sealing ring 37 is fixedly connected to the top of the stirring rod 24. The top of the sealing ring 37 is rotatably connected to the knob 34. By adding the sealing ring 37, it is prevented that material enters the stirring rod 24, causing the lead screw 33 to jam and thus preventing the stirring paddle 210 from being taken out.

[0037] Specifically, two springs 31 are fixedly connected to the left and right sides of the inside of the stirring paddle 210, respectively. A locking block 32 is fixedly connected to the outside of the springs 31, forming a sliding connection with the inner wall of the stirring paddle 210. When the locking block 32 is subjected to external pressure, it retracts into the stirring paddle 210 and compresses the springs 31, thus engaging with the stirring rod 24. When the locking block 32 retracts into the stirring paddle 210, it releases the engagement with the stirring rod 24. A lead screw 33 is rotatably connected inside the stirring rod 24. The top end of the lead screw 33 passes through the stirring rod 24 and is fixedly connected to a knob 34. Rotating the knob 34 drives the lead screw 33 to rotate. A top plate 35 is threadedly connected to the outside of the lead screw 33. Limiting blocks 36 are fixedly connected to the front and rear sides of the top plate 35. The top plate 35 is connected to the two limiting blocks 36. 6 forms a sliding connection with the stirring rod 24. When the lead screw 33 rotates, it drives the top plate 35 to slide up and down along the inner wall of the stirring rod 24. When the top plate 35 moves upward, it pushes the locking block 32 out of the stirring paddle 210, thereby releasing the locking state. At this time, the operator can remove the stirring paddle 210 from the stirring rod 24 to clean or replace it. This structure avoids the situation where there are dead corners during cleaning of the equipment, resulting in residual material in the stirring paddle 210, and prevents residual material from affecting the quality of subsequent material mixing. A sealing ring 37 is fixedly connected to the top of the stirring rod 24. The top of the sealing ring 37 forms a rotating connection with the knob 34. The sealing ring 37 prevents material from entering the interior of the stirring rod 24, preventing the lead screw 33 from jamming due to material intrusion, and ensuring that the stirring paddle 210 can be disassembled normally.

[0038] Reference Figure 1 , Figure 2 and Figure 4The isolation assembly 27 includes an isolation disk 271, which is rotatably connected to the outside of the stirring rod 212. The left and right sides of the inner side of the isolation disk 271 are rotatably connected to two stirring rods 24. When the stirring rods 24 revolve, they drive the isolation disk 271 to rotate synchronously. A fixing ring 273 is fixedly connected to the inner wall of the reactor 1, and the fixing ring 273 is rotatably connected to the isolation disk 271. Fixing rings 272 are rotatably connected to both the upper and lower sides of the isolation disk 271, and both fixing rings 272 are rotatably connected to the stirring rod 212. Through the cooperation of the isolation disk 271 with the fixing rings 272 and 273, the space below the stirring rod 24 is kept sealed during rotation, preventing material from flowing down and causing the gear 25 and gear ring 26 to jam, thus damaging the device. The feeding assembly 28 includes a feeding pipe 281, which is connected to the top of the reactor lid 4. Material can be added to the reactor at any time through the feeding pipe 281. The outer side of 281 is threaded with a sealing cap 282, which ensures the sealing of the material during mixing. The discharge assembly 29 includes a discharge pipe 291, through which the mixed material is discharged. The discharge pipe 291 is connected to the right side of the reactor 1. A valve 292 is rotatably connected to the outer side of the discharge pipe 291, which controls the opening and closing of the discharge pipe 291. The observation assembly 38 includes an observation window 381, which is fixedly connected to the front side of the reactor 1. Multiple scale lines 382 are opened on the outer side of the observation window 381. By observing the scale lines 382 corresponding to the material height in the reactor through the observation window 381, the amount of material in the reactor can be known. The support assembly 39 includes a support frame 391, which is fixedly connected to the bottom of the reactor 1. Buffer pads 392 are fixedly connected to all four sides of the bottom of the support frame 391. The buffer pads 392 absorb external vibrations to reduce the impact of external factors on the operation of the device.

[0039] Specifically, the isolation disc 271 is rotatably connected to the outside of the stirring rod 212. The left and right sides of the interior of the isolation disc 271 are rotatably connected to the two stirring rods 24. When the stirring rods 24 revolve, they drive the isolation disc 271 to rotate synchronously. The inner wall of the reactor 1 is fixedly connected to the fixing ring 273, which is rotatably connected to the isolation disc 271. The upper and lower sides of the isolation disc 271 are rotatably connected to the fixing rings 272, which are rotatably connected to the stirring rods 212. Through the cooperation of the isolation disc 271, the fixing rings 272 and 273, the isolation disc 271 always divides the interior of the reactor 1 into two spaces, upper and lower, during the rotation of the stirring rods 24. This structure prevents the material in the upper space from flowing into the lower space, avoids the material from contacting the gear 25 and the gear ring 26, and prevents the gear 25 and gear ring 26 from jamming due to material intrusion, ensuring the normal operation of the transmission mechanism. The feeding pipe 281 is connected to the top of the reactor cover 4. Material is added to the reactor 1 via feed pipe 281. A sealing cap 282 is threadedly connected to the outside of feed pipe 281, forming a sealed connection with feed pipe 281. This structure maintains the sealed state of reactor 1 during material mixing. Discharge pipe 291 is connected to the right side of reactor 1, and the mixed material is discharged through discharge pipe 291. A valve 292 is rotatably connected to the outside of discharge pipe 291. Rotating valve 292 controls the opening or closing of the discharge pipe 291. Observation window 381 is fixedly connected to the front of reactor 1. Multiple scale lines 382 are opened on the outside of observation window 381. By observing the scale lines 382 corresponding to the liquid level of material in reactor 1 through observation window 381, the material capacity in reactor 1 can be determined. Support frame 391 is fixedly connected to the bottom of reactor 1. Buffer pads 392 are fixedly connected to all four sides of the bottom of support frame 391. Buffer pads 392 absorb vibrations transmitted to the device from the outside, reducing the impact of external vibrations on the device's operating status.

[0040] Working principle: The motor 21 drives the transmission rod 22 to rotate, which in turn drives the connecting rod 23 and the stirring rod 24 to revolve around the axis. The gear 25 fixed at the bottom of the stirring rod 24 meshes with the bottom gear ring 26, forcing the stirring rod 24 to rotate on its own axis while revolving around the axis. This compound motion causes the stirring paddle 210 fixed on the stirring rod 24 to form a large-scale fluid circulation, realizing macroscopic mixing of materials. At the same time, the transmission rod 22 drives the stirring rod 212 to rotate at high speed after the speed is amplified by the speed increaser 211. This drives the dispersion disk 213 to generate a high-intensity shear field. The low-speed stirring paddle 210 continuously transports the material to the action area of ​​the dispersion disk 213, while the high-speed dispersion disk 213 shears and disperses the material. The dual-speed design forms a synergistic effect of circulation and shearing, enabling the material to flow throughout the entire area of ​​the vessel. This solves the problems of uneven shear force distribution and mixing dead zones that exist in traditional stirring devices.

[0041] The mixing paddle 210 and the mixing rod 24 are locked together by the locking block 32 supported by the spring 31. When disassembly is required, rotating the knob 34 drives the lead screw 33 to rotate, pushing the top plate 35 upward along the guide block 36. The top plate 35 presses the locking block 32 back into the mixing paddle 210, releasing the locking state. This design allows for quick disassembly and assembly of the mixing paddle 210, facilitating thorough cleaning of all surfaces of the mixing paddle 210 and preventing the accumulation of residual materials. The sealing ring 37 effectively prevents materials from entering the mixing rod 24 and prevents the lead screw 33 from jamming. The above measures ensure the ease of maintenance of the mixing components and ensure that the equipment is clean before each material mixing, maintaining the stability of product quality.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A raw material mixing device for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive, comprising a reaction vessel (1), characterized in that: The top of the reactor (1) is provided with a lid (4), and the inside of the reactor (1) is provided with a mixing mechanism (2). The mixing mechanism (2) is used to uniformly mix the materials added to the reactor and ensure the quality of the mixed materials. The inside of the reactor (1) is provided with a loading and unloading mechanism (3). The loading and unloading mechanism (3) is used to quickly install and disassemble the stirring device to ensure that there are no dead corners during cleaning and to avoid material residue that may affect the subsequent mixing quality. The mixing mechanism (2) includes a motor (21), which is fixedly connected to the middle of the bottom side of the reactor (1). The output end of the motor (21) passes through the reactor (1) and is fixedly connected to a transmission rod (22). A connecting rod (23) is fixedly connected to the outside of the transmission rod (22). A stirring rod (24) is rotatably connected to both the left and right sides of the connecting rod (23). A gear (25) is fixedly connected to the bottom of the stirring rod (24). A gear ring (26) is fixedly connected to the bottom of the inner side of the reactor (1). The gear (25) meshes with the gear ring (26). The outer side of the stirring rod (24) is engaged. The reactor has a stirring paddle (210), a speed increaser (211) is provided on the top of the transmission rod (22), the top of the transmission rod (22) is fixedly connected to the input end of the speed increaser (211), the output end of the speed increaser (211) is fixedly connected to a stirring rod (212), a dispersion disc (213) is fixedly connected to the outer side of the top of the stirring rod (212), a reactor lid (4) is fixedly connected to the top of the reactor (1), an isolation component (27) is provided on the outer side of the stirring rod (24), a feeding component (28) is provided on the outer side of the reactor lid (4), and a discharge component (29) is provided on the right side of the reactor (1).

2. The raw material mixing equipment for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to claim 1, characterized in that: The loading and unloading mechanism (3) includes springs (31), two springs (31) are fixedly connected to the left and right sides of the inside of the stirring paddle (210), and a locking block (32) is fixedly connected to the outside of the springs (31). The locking block (32) is slidably connected to the inner wall of the stirring paddle (210). The locking block (32) is engaged with the stirring rod (24). The stirring rod (24) is rotatably connected to the inside of the stirring rod (24). The top end of the screw (33) passes through the stirring rod (24) and is fixedly connected to a knob (34). The outside of the screw (33) is threadedly connected to a top plate (35). Limiting blocks (36) are fixedly connected to the front and rear sides of the top plate (35). The top plate (35) is slidably connected to the stirring rod (24) through the two limiting blocks (36). An observation component (38) is provided on the outside of the reactor (1). A support component (39) is provided at the bottom of the reactor (1).

3. The raw material mixing equipment for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to claim 1, characterized in that: The isolation assembly (27) includes an isolation disk (271), which is rotatably connected to the outside of the stirring rod (212). The left and right sides of the inside of the isolation disk (271) are rotatably connected to two stirring rods (24). The inner wall of the reactor (1) is fixedly connected to a fixing ring (273), which is rotatably connected to the isolation disk (271). The upper and lower sides of the isolation disk (271) are rotatably connected to fixing rings (272), and both fixing rings (272) are rotatably connected to the stirring rods (212).

4. The raw material mixing equipment for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to claim 1, characterized in that: The feeding assembly (28) includes a feeding tube (281) which is connected to the top of the vessel lid (4), and a sealing cap (282) is threaded onto the outside of the feeding tube (281).

5. The raw material mixing equipment for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to claim 1, characterized in that: The discharge assembly (29) includes a discharge pipe (291) connected to the right side of the reactor (1), and a valve (292) is rotatably connected to the outside of the discharge pipe (291).

6. The raw material mixing equipment for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to claim 2, characterized in that: A sealing ring (37) is fixedly connected to the top of the stirring rod (24), and the top of the sealing ring (37) is rotatably connected to the knob (34).

7. The raw material mixing equipment for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to claim 2, characterized in that: The observation component (38) includes an observation window (381), which is fixedly connected to the front side of the reactor (1), and multiple scale lines (382) are provided on the outer side of the observation window (381).

8. The raw material mixing equipment for producing low-viscosity moisture-curing dual-curing polyurethane hot melt adhesive according to claim 2, characterized in that: The support assembly (39) includes a support frame (391), which is fixedly connected to the bottom of the reactor (1), and buffer pads (392) are fixedly connected to the bottom of the support frame (391) around its perimeter.

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