Polyurethane adhesive catalytic reaction preparation device
Through the synergistic effect of the conical spiral plate, cylindrical spiral plate and outer scraper, the problem of uneven mixing in the catalytic reaction device of polyurethane adhesive is solved, uniform mixing and rapid discharge of the high viscosity system are achieved, and the reaction efficiency is improved.
Patent Information
- Application Number
- CN202510490079.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2025-07-22
AI Technical Summary
The existing polyurethane adhesive catalytic reaction preparation device has shortcomings in terms of mixing uniformity, which makes it difficult to cope with high viscosity systems, resulting in uneven mixing of upper and lower layers of materials and uneven reaction preparation speed.
The conical spiral plate and the cylindrical spiral plate are used to cooperate with the outer scraper to establish a vertical and circumferential circulating flow path, and combined with the multi-motor-driven agitation and cutting structure to ensure uniform mixing and rapid cutting of the materials in the catalytic reaction preparation device.
The upper and lower layers of materials in the high viscosity system are uniformly mixed, which improves the reaction preparation speed and efficiency, reduces material adhesion and shortens the reaction cycle.
Smart Images
Figure CN120346767A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field related to the preparation of polyurethane adhesives by catalytic reaction, and specifically to an apparatus for the preparation of polyurethane adhesives by catalytic reaction. Background Art
[0002] As a high-performance adhesive, polyurethane adhesive has been widely used in many fields such as automobile manufacturing, construction, packaging, shoe-making, furniture, electronics and electrical appliances due to its excellent physical and mechanical properties, good chemical resistance and bonding properties. With the progress of technology and the development of industry, the performance requirements for polyurethane adhesives are getting higher and higher, especially for their curing speed, bonding strength, weather resistance and other aspects. In order to meet these requirements, the preparation technology of polyurethane adhesives is also constantly innovating. Among them, catalytic reaction, as a key step, has a decisive impact on the performance of the final product.
[0003] The core preparation process of polyurethane adhesive depends on the catalytic addition reaction of isocyanate (NCO) and active hydrogen-containing compounds (such as polyols, amines). The essence of this reaction is to reduce the reaction activation energy through a catalyst, accelerate the nucleophilic addition between isocyanate groups and active hydrogen compounds, and form urethane bonds (-NHCOO-) or urea bonds (-NHCONH-). Among them, the catalytic reaction principle and key steps are as follows:
[0004] Trimerization reaction of isocyanate: Under the action of catalysts such as phosphines and tertiary amines, aliphatic or aromatic isocyanates can undergo irreversible trimerization to form a stable isocyanurate six-membered ring structure.
[0005] Dimerization reaction: Aromatic isocyanates (such as MDI, TDI) form dimers in the presence of catalysts such as phosphines and pyridines, and depolymerize to restore activity at high temperatures, which is used to prepare one-component high-temperature curing adhesives.
[0006] Chain extension reaction with alcohol / amine: Isocyanate reacts with polyol to form polyurethane, and reacts with amines to form substituted urea. Both reactions rely on catalysts to control the reaction rate.
[0007] Although the current apparatus for the preparation of polyurethane adhesives by catalytic reaction can achieve basic mixing and heating functions, it has the following technical defects: The mixing uniformity is insufficient. Traditional stirring paddles are difficult to handle high-viscosity systems after adding fillers or thickeners. The self-gravity and viscosity of the materials affect, making the materials easily gather at the bottom. The stirring paddles are difficult to mix the upper and lower layers evenly, resulting in uneven reaction preparation speed. Summary of the Invention
[0008] The purpose of the present invention is to provide a device for preparing polyurethane adhesive through catalytic reaction, so as to solve the problems of insufficient mixing uniformity, difficulty in dealing with high-viscosity systems, difficulty in uniformly mixing the upper and lower layers of materials, and uneven reaction preparation speed proposed in the above background technology.
[0009] To achieve the above purpose, the present invention provides the following technical solution: A device for preparing polyurethane adhesive through catalytic reaction, including a catalytic reaction protective housing, which is composed of a housing main body, a lower converging housing and a discharge pipe. The housing main body, the lower converging housing and the discharge pipe are arranged from top to bottom and integrally formed; a catalytic reaction preparation cavity is formed inside the catalytic reaction protective housing, a second stirring component is arranged in the catalytic reaction preparation cavity, the second stirring component includes a rotating intermediate shaft, and a first stirring component is also arranged in the catalytic reaction preparation cavity, the first stirring component includes a lower rotating sleeve; a fixed sleeve is fixed along the lower end of the lower rotating sleeve outside the rotating intermediate shaft, a plurality of connecting plates are fixedly arranged in an annular array outside the fixed sleeve, the other end of the connecting plate is fixed with an outer scraper, the outer scraper is inclined in the clockwise direction, a cylindrical spiral plate is fixed at the lower end outside the rotating intermediate shaft, and the outer end surface of the cylindrical spiral plate fits the inner wall of the discharge pipe. A conical spiral plate is arranged along the upper end of the cylindrical spiral plate outside the rotating intermediate shaft, the conical spiral plate is fixed to the cylindrical spiral plate, the conical spiral plate and the cylindrical spiral plate are spirally arranged in the clockwise direction, and the outer end surface of the conical spiral plate fits the inner wall of the lower converging housing.
[0010] Preferably, the rotating intermediate shaft penetrates through the housing main body, the lower converging housing and the discharge pipe, the upper end of the rotating intermediate shaft passes through the upper end surface of the housing main body and extends upward, the upper end of the lower rotating sleeve passes through the upper end surface of the catalytic reaction protective housing and extends upward, and the lower rotating sleeve is rotatably connected to the middle outside the rotating intermediate shaft; a fitting plate is fixed outside the outer scraper, and the fitting plate fits the inner wall of the housing main body; a plurality of barrier disks are fixedly arranged at equal intervals outside the part of the lower rotating sleeve located inside the catalytic reaction preparation cavity, and a conical part is formed on the upper end surface of the barrier disk.
[0011] Preferably, an inner fixed toothed ring is fixed along the inner space of the barrier disk outside the rotating intermediate shaft, a plurality of driven rotating gears are arranged in an annular array outside the inner fixed toothed ring, the driven rotating gears are meshed with the inner fixed toothed ring, the driven rotating gears are rotatably connected to the barrier disk through shafts, the setting height of the driven rotating gears is less than the setting height of the inner fixed toothed ring, a fifth bevel gear is coaxially connected to the lower end of the driven rotating gear, a sixth bevel gear is meshed outside the fifth bevel gear, an outer rotating shaft is arranged outside the sixth bevel gear, the outer rotating shaft passes through the outer surface of the barrier disk and extends outward, and a plurality of rotating blades are fixedly arranged in an annular array outside the outer rotating shaft.
[0012] Preferably, one side of the upper end of the catalytic reaction protective housing is fixedly welded with a first L-shaped support plate. A third driving motor is installed inside the first L-shaped support plate. The output shaft end of the third driving motor is connected with a seventh bevel gear. One side of the seventh bevel gear facing the fixed sleeve is meshed with an eighth bevel gear. One side of the eighth bevel gear facing the fixed sleeve is coaxially connected with an eccentric impact wheel.
[0013] Preferably, the other side of the upper end of the catalytic reaction protective housing is fixedly welded with a second L-shaped support plate. A first driving motor is installed at the upper end of the second L-shaped support plate. The output end of the first driving motor is connected with a first bevel gear. The front end of the first bevel gear is meshed with a second bevel gear.
[0014] Preferably, a driving rotating gear is installed at the lower end of the second L-shaped support plate. The driving rotating gear is coaxially connected with the second bevel gear. An upper fixed tooth ring is fixed at the upper end of the outer part of the lower rotating sleeve. The upper fixed tooth ring is meshed with the driving rotating gear.
[0015] Preferably, a lower action ring is arranged at the lower end of the upper fixed tooth ring. A plurality of lower telescopic limit rods are fixedly arranged in an outer circumferential array between the lower action ring and the catalytic reaction protective housing. A lower pressure spring is arranged along the outer part of the fixed sleeve between the lower action ring and the catalytic reaction protective housing; an upper action ring is arranged at the upper end of the upper fixed tooth ring. A plurality of upper telescopic limit rods are fixedly arranged in an outer circumferential array between the upper action ring and the first L-shaped support plate. An upper pressure spring is arranged along the outer part of the rotating intermediate shaft between the upper action ring and the first L-shaped support plate; a plurality of balls are rotatably connected to one end of the lower action ring and the upper action ring facing the upper fixed tooth ring; the eccentric impact wheel is located at one side of the upper end of the upper action ring and is attached to the upper action ring.
[0016] Preferably, a second driving motor is installed at the upper end of the first L-shaped support plate. The output end of the second driving motor is connected with a third bevel gear. The rotating intermediate shaft of the second stirring assembly passes through the first L-shaped support plate and is connected with a fourth bevel gear. The fourth bevel gear is meshed with the third bevel gear.
[0017] Preferably, a vacuum insulation cavity is formed inside the inner wall of the catalytic reaction protective housing. A heating plate is embedded and fixed on the inner surface of the inner wall of the catalytic reaction protective housing. The power supply circuit on the heating plate extends to the outside.
[0018] Preferably, a feed pipe is installed at one side of the upper end of the catalytic reaction protective housing. A control valve is installed at the lower end of the discharge pipe on the catalytic reaction protective housing. Support frames are fixedly welded at the lower ends of both sides outside the catalytic reaction protective housing.
[0019] Compared with the prior art, the beneficial effects of the present invention are:
[0020] (1) In this invention, the conical spiral plate and the cylindrical spiral plate cooperate with each other, taking into account the characteristic that the material moves downward under its own gravity, and combined with the characteristic that the outer scraper is inclined clockwise, a vertical and circumferential circulation flow path is established. During the stirring process, the outer scraper, the conical spiral plate and the cylindrical spiral plate are driven to rotate counterclockwise. The outer scraper and the fitting plate push the material adhering to the inner wall of the catalytic reaction protective shell inward and upward. The cylindrical spiral plate drives the bottom material to move upward in a spiral manner. The conical spiral plate pushes the material adhering to the inner wall of the catalytic reaction protective shell inward and upward. The prepared material and the catalyst can move towards the middle direction of the catalytic reaction preparation cavity. In this high-viscosity system, by pushing the material upward, it is beneficial to the mixing of the upper and lower layers of the material, solving the problems of insufficient mixing uniformity in the current polyurethane adhesive catalytic reaction preparation device, difficulty in dealing with high-viscosity systems, difficulty in uniformly mixing the upper and lower layers of the material, and uneven reaction preparation speed. Moreover, the setting of the outer scraper, the conical spiral plate and the cylindrical spiral plate can eliminate the dead corners of the cavity.
[0021] (2) In this invention, the rotation system of the outer scraper, the conical spiral plate and the cylindrical spiral plate rotates in the opposite direction during feeding. The outer scraper and the fitting plate push the material adhering to the inner wall of the catalytic reaction protective shell inward and upward and downward. The conical spiral plate pushes the material adhering to the inner wall of the catalytic reaction protective shell inward and downward. The cylindrical spiral plate conveys the material in a spiral manner towards the discharge pipe direction, which is beneficial to rapid feeding and reduces the adhesion of the material.
[0022] (3) In this invention, during feeding, the first driving motor drives the first bevel gear to rotate, driving the lower rotating sleeve and the blocking disc to rotate. The rotating blade connected to the blocking disc through the outer rotating shaft is driven to rotate with the lower rotating sleeve as the rotation axis, and through an intermediate structure, the rotating blade rotates at a lower speed with the outer rotating shaft as the rotation axis. The rotating blade will disperse the flowing prepared material to each area in the catalytic reaction preparation cavity. This is beneficial to reducing the accumulation of the material during feeding and reducing the preparation time in the subsequent catalytic reaction preparation process. Moreover, during the catalytic reaction preparation process, the second driving motor participates in the work, driving the rotating blade to rotate with the lower rotating sleeve as the rotation axis and accelerating the rotation with the outer rotating shaft as the rotation axis to stir the viscous material. And during the discharging stage, only the second driving motor participates in the work, driving the rotating blade to rotate with the outer rotating shaft as the rotation axis to disturb the viscous material and help with rapid discharging. Through the coordinated work of the first driving motor and the second driving motor, they play different roles in each stage of the preparation reaction, improving the reaction efficiency.
[0023] (4) In this invention, the eccentric impact wheel makes the first stirring assembly move up and down in a cycle, which can help the material to be mixed for the catalytic reaction during the stirring stage, make the material discharge rapidly during the discharging stage, and help the adhering material to break away. Moreover, the three parts of the structure cooperate with each other, influence each other, and have stronger integrity. Description of the Drawings
[0024] Figure 1 This is a schematic diagram of the overall structure of the main perspective of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0025] Figure 2 This is a schematic diagram of the overall structure of the bottom perspective of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0026] Figure 3 This is a front view of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0027] Figure 4 This is an enlarged view of the structure at A of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0028] Figure 5 This is a top view of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0029] Figure 6 This is a sectional view taken along line B - B of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0030] Figure 7 This is a schematic diagram of the connection structure of the first stirring assembly and the second stirring assembly of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0031] Figure 8 This is a schematic diagram of the structure of the first stirring assembly of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0032] Figure 9 This is a schematic diagram of the structure of the second stirring assembly of a polyurethane adhesive catalytic reaction preparation device of the present invention;
[0033] Figure 10 This is a schematic diagram of the internal driving relationship of the barrier disk of a polyurethane adhesive catalytic reaction preparation device of the present invention.
[0034] In the figure: 1. Catalytic reaction protective shell; 2. Shell body; 3. Lower converging shell; 4. Discharge pipe; 5. Vacuum insulation cavity; 6. Heating plate; 7. Catalytic reaction preparation cavity; 8. Feed pipe; 9. Control valve; 10. Support frame; 11. First L-shaped support plate; 12. Second L-shaped support plate; 13. First driving motor; 14. First bevel gear; 15. Second bevel gear; 16. Driving rotating gear; 17. First stirring assembly; 18. Upper fixed tooth ring; 19. Lower rotating sleeve; 20. Barrier disc; 21. Conical part; 22. Second driving motor; 23. Third bevel gear; 24. Second stirring assembly; 25. Fourth bevel gear; 26. Rotating intermediate shaft; 27. Inner fixed tooth ring; 28. Fixed sleeve; 29. Connecting plate; 30. Outer scraper; 31. Fitting plate; 32. Conical spiral plate; 33. Cylindrical spiral plate; 34. Driven rotating gear; 35. Fifth bevel gear; 36. Sixth bevel gear; 37. Outer rotating shaft; 38. Rotating blade; 39. Lower action ring; 40. Lower telescopic limit rod; 41. Lower pressure spring; 42. Upper action ring; 43. Upper telescopic limit rod; 44. Upper pressure spring; 45. Ball; 46. Third driving motor; 47. Seventh bevel gear; 48. Eighth bevel gear; 49. Eccentric impact wheel. Detailed implementation manners
[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0036] Please refer to Figures 1 - 10 , an embodiment provided by the present invention:
[0037] (1) The catalytic reaction protective shell 1, as Figure 6 shown:
[0038] It is composed of a shell body 2, a lower converging shell 3 and a discharge pipe 4. The shell body 2, the lower converging shell 3 and the discharge pipe 4 are arranged from top to bottom and integrally formed. The inner wall is integrated with a vacuum insulation cavity 5 and a heating plate 6. An electric heating layer can be provided on the inner wall of the discharge pipe 4 to prevent the condensation and blockage of viscous materials. The vacuum insulation cavity 5 can be filled with nano-aerogel, and the thermal resistance coefficient ≤ 0.02W / (m·K) to ensure a constant temperature reaction environment. The heating plate 6 can adopt a segmented resistance wire layout to achieve rapid heating and uniform heat transfer.
[0039] A catalytic reaction preparation cavity 7 is formed inside the catalytic reaction protective shell 1, and a second stirring assembly 24 and a first stirring assembly 17 are arranged inside the catalytic reaction preparation cavity 7.
[0040] On the upper end of one side of the catalytic reaction protective housing 1, a feed pipe 8 is installed. The feed pipe 8 can adopt a double-layer vacuum lock structure to ensure an oxygen-free environment during the catalyst addition process. A control valve 9 is installed at the lower end of the discharge pipe 4 on the catalytic reaction protective housing 1. On the lower ends of both sides outside the catalytic reaction protective housing 1, support frames 10 are welded and fixed.
[0041] (2) The first stirring assembly 17, as Figure 4 , Figures 6 - 8 shown:
[0042] It includes a lower rotating sleeve 19 and a barrier disk 20. The upper end of the lower rotating sleeve 19 extends upward through the upper end face of the catalytic reaction protective housing 1, and a conical portion 21 is provided on the upper end face of the barrier disk 20.
[0043] On one side of the upper end of the catalytic reaction protective housing 1, a first L-shaped support plate 11 is welded and fixed. On the other side of the upper end of the catalytic reaction protective housing 1, a second L-shaped support plate 12 is welded and fixed. A first driving motor 13 is installed at the upper end of the second L-shaped support plate 12. The output end of the first driving motor 13 is connected to a first bevel gear 14. The front end of the first bevel gear 14 is meshed with a second bevel gear 15. A driving rotating gear 16 is installed at the lower end of the second L-shaped support plate 12. The driving rotating gear 16 is coaxially connected with the second bevel gear 15. An upper fixed tooth ring 18 is fixed at the upper end outside the lower rotating sleeve 19. The lower rotating sleeve 19 is meshed with the upper fixed tooth ring 18 through the driving rotating gear 16.
[0044] (3) The second stirring assembly 24, as Figure 4 , Figure 6 , Figure 7 , Figure 9 and Figure 10 shown:
[0045] It includes a rotating intermediate shaft 26. The rotating intermediate shaft 26 penetrates through the housing main body 2, the lower converging housing 3, and the discharge pipe 4. The upper end of the rotating intermediate shaft 26 passes through the upper end face of the housing main body 2 and extends upward. The lower rotating sleeve 19 is rotatably connected to the middle outside the rotating intermediate shaft 26.
[0046] A second driving motor 22 is installed at the upper end of the first L-shaped support plate 11. The output end of the second driving motor 22 is connected to a third bevel gear 23. The rotating intermediate shaft 26 of the second stirring assembly 24 passes through the first L-shaped support plate 11 and is connected to a fourth bevel gear 25. The fourth bevel gear 25 is meshed with the third bevel gear 23.
[0047] A fixed sleeve 28 is fixed to the lower end of the outer part of the rotating intermediate shaft 26 along the lower rotating sleeve 19. A plurality of connecting plates 29 are fixedly arranged in an annular array on the outer part of the fixed sleeve 28. The other end of the connecting plate 29 is fixed with an outer scraper 30. The outer scraper 30 is inclined in the clockwise direction. A fitting plate 31 is fixed to the outer part of the outer scraper 30. The elastic pressing edge structure of the outer scraper 30 and the fitting plate 31 is matched to ensure a clearance fit of 0.1 mm with the inner wall of the housing body 2, and the wall scraping efficiency reaches 99.2%. A cylindrical spiral plate 33 is fixed to the lower end of the outer part of the rotating intermediate shaft 26, and the outer end face of the cylindrical spiral plate 33 is attached to the inner wall of the discharge pipe 4. A conical spiral plate 32 is arranged along the upper end of the cylindrical spiral plate 33 on the outer part of the rotating intermediate shaft 26. The conical spiral plate 32 is fixed to the cylindrical spiral plate 33. The conical spiral plate 32 and the cylindrical spiral plate 33 are spirally arranged in the clockwise direction, and the outer end face of the conical spiral plate 32 is attached to the inner wall of the lower converging housing 3. During the catalytic reaction stage, the material is pushed upward by counterclockwise rotation, and during the feeding stage, a forced discharge flow channel is formed by clockwise rotation, and the discharge time is shortened to 1 / 3 of that of traditional equipment.
[0048] An internal fixed gear ring 27 is fixed to the inner space of the blocking disc 20 along the outer part of the rotating intermediate shaft 26. A plurality of driven rotating gears 34 are arranged in an annular array on the outer part of the internal fixed gear ring 27. The driven rotating gears 34 are rotatably connected to the blocking disc 20 through shafts. The set height of the driven rotating gears 34 is less than the set height of the internal fixed gear ring 27. When the first stirring assembly 17 moves up and down, it does not affect the meshing connection relationship between the driven rotating gears 34 and the internal fixed gear ring 27. A fifth bevel gear 35 is coaxially connected to the lower end of the driven rotating gear 34. A sixth bevel gear 36 is meshed with the outer part of the fifth bevel gear 35. An outer rotating shaft 37 is arranged outside the sixth bevel gear 36. The outer rotating shaft 37 passes through the outer surface of the blocking disc 20 and extends outward. A plurality of rotating blades 38 are fixedly arranged in an annular array on the outer part of the outer rotating shaft 37.
[0049] The first driving motor 13 drives the revolution movement through a bevel gear set (the first bevel gear 14, the second bevel gear 15), and the second driving motor 22 controls the rotation speed of the outer rotating shaft 37 through the third bevel gear 23 and the fourth bevel gear 25.
[0050] Feeding stage: The prepared material and the catalyst are successively placed into the catalytic reaction preparation chamber 7 through the feed pipe 8.
[0051] At this time, the first driving motor 13 drives the first bevel gear 14 to rotate. Through the meshing connection relationship between the first bevel gear 14 and the second bevel gear 15, the driving rotating gear 16 coaxially connected to the second bevel gear 15 is driven to rotate. Through the meshing connection relationship between the driving rotating gear 16 and the upper fixed tooth ring 18, the lower rotating sleeve 19 is driven to rotate, and the blocking disc 20 is driven to rotate. The rotating blade 38 connected to the blocking disc 20 through the outer rotating shaft 37 is driven to rotate with the lower rotating sleeve 19 as the rotating shaft. Due to the meshing connection relationship between the driven rotating gear 34 and the inner fixed tooth ring 27, and the shaft connection relationship between the blocking disc 20 and the driven rotating gear 34 and the fifth bevel gear 35, the driven rotating gear 34 will roll at a lower speed along the outside of the inner fixed tooth ring 27, so that the sixth bevel gear 36 meshing with the fifth bevel gear 35 drives the outer rotating shaft 37 to rotate, and the rotating blade 38 is driven to rotate at a lower speed with the outer rotating shaft 37 as the rotating shaft; the rotating blade 38 will disperse the downward flowing preparation material to various areas in the catalytic reaction preparation chamber 7.
[0052] Catalytic reaction stage: The external device heats the heating plate 6 through a circuit, and the vacuum insulation chamber 5 can reduce the temperature exchange with the external temperature to achieve heating and constant temperature reaction.
[0053] While the first driving motor 13 is working, the second driving motor 22 drives the third bevel gear 23 to rotate, driving the fourth bevel gear 25 meshing with the third bevel gear 23 to rotate, and the rotating intermediate shaft 26 connected to the fourth bevel gear 25 rotates synchronously.
[0054] The inner fixed tooth ring 27 outside the rotating intermediate shaft 26 rotates to drive the driven rotating gear 34 meshing with the inner fixed tooth ring 27 to rotate, the fifth bevel gear 35 coaxially connected to the driven rotating gear 34 rotates, the sixth bevel gear 36 meshing with the fifth bevel gear 35 drives the outer rotating shaft 37 to rotate, and the rotating blade 38 is driven to rotate at a higher speed with the outer rotating shaft 37 as the rotating shaft to stir and mix the preparation material and the catalyst.
[0055] At the same time, the outer scraper 30, the fitting plate 31, the conical spiral plate 32 and the cylindrical spiral plate 33 are driven to rotate counterclockwise. Since the outer scraper 30 and the fitting plate 31 are inclined in the clockwise direction, and the conical spiral plate 32 and the cylindrical spiral plate 33 are arranged in the clockwise direction, the outer scraper 30 and the fitting plate 31 can push the material adhering to the inner wall of the catalytic reaction protective shell 1 inward and upward, and the cylindrical spiral plate 33 spirally drives the bottom material upward, and the conical spiral plate 32 can push the material adhering to the inner wall of the catalytic reaction protective shell 1 inward and upward; the preparation material and the catalyst can move toward the middle direction of the catalytic reaction preparation chamber 7 and are stirred and mixed by the rotating blade 38.
[0056] Feeding stage: Open the control valve 9, and the material is fed through the discharge pipe 4.
[0057] The second drive motor 22 drives the third bevel gear 23 to rotate in the reverse direction, and the rotating blade 38 is driven to rotate at a relatively high speed with the outer rotating shaft 37 as the rotation axis, agitating the viscous material so that the material can be discharged quickly.
[0058] At the same time, the outer scraper 30, the fitting plate 31, the conical spiral plate 32, and the cylindrical spiral plate 33 are driven to rotate clockwise. The outer scraper 30 and the fitting plate 31 push the material adhering to the inner wall of the catalytic reaction protective housing 1 to move inwards and downwards. The conical spiral plate 32 pushes the material adhering to the inner wall of the catalytic reaction protective housing 1 to move inwards and downwards. The cylindrical spiral plate 33 conveys the material spirally towards the discharge pipe 4.
[0059] (4) The up-and-down drive motion structure, as Figures 1 - 6 shown:
[0060] A third drive motor 46 is installed inside the first L-shaped support plate 11. The output shaft end of the third drive motor 46 is connected to a seventh bevel gear 47. The seventh bevel gear 47 is meshed with an eighth bevel gear 48 on one side facing the fixed sleeve 28. The eighth bevel gear 48 is coaxially connected to an eccentric impact wheel 49 on one side facing the fixed sleeve 28. The third drive motor 46 drives the eccentric impact wheel 49 to generate periodic impact force.
[0061] A lower action ring 39 is arranged at the lower end of the upper fixed tooth ring 18. A plurality of lower telescopic limit rods 40 are fixedly arranged in an external annular array between the lower action ring 39 and the catalytic reaction protective housing 1. A lower pressure spring 41 is arranged along the outside of the fixed sleeve 28 between the lower action ring 39 and the catalytic reaction protective housing 1; an upper action ring 42 is arranged at the upper end of the upper fixed tooth ring 18. A plurality of upper telescopic limit rods 43 are fixedly arranged in an external annular array between the upper action ring 42 and the first L-shaped support plate 11. An upper pressure spring 44 is arranged along the outside of the rotating intermediate shaft 26 between the upper action ring 42 and the first L-shaped support plate 11; both ends of the lower action ring 39 and the upper action ring 42 facing the upper fixed tooth ring 18 are rotatably connected with a plurality of balls 45 to form a dynamic pressure layer, which can drive the upper fixed tooth ring 18 to move upwards or downwards while not affecting the rotation of the upper fixed tooth ring 18; the eccentric impact wheel 49 is located on one side of the upper end of the upper action ring 42 and is in contact with the upper action ring 42.
[0062] The telescopic limit rod is composed of a sleeve and an intermediate rod, which mainly plays the role of vertical movement limit.
[0063] During the catalytic reaction stage and the feeding stage, the third driving motor 46 operates simultaneously. The third driving motor 46 drives the seventh bevel gear 47 to rotate, and drives the eccentric impact wheel 49 coaxially connected to the eighth bevel gear 48 to rotate through the meshing relationship between the seventh bevel gear 47 and the eighth bevel gear 48. When the distal end of the eccentric impact wheel 49 strikes the upper action ring 42, it will drive the upper action ring 42 to move downward, pressing the entire first stirring assembly 17 downward, causing the upper telescopic limit rod 43 and the upper pressure spring 44 to elongate, and the lower telescopic limit rod 40 and the lower pressure spring 41 to contract; since the height of the driven rotating gear 34 is less than that of the internal fixed tooth ring 27, after the first stirring assembly 17 moves downward, the driven rotating gear 34 still meshes with the internal fixed tooth ring 27, without affecting the rest of the working process. When the proximal end of the eccentric impact wheel 49 approaches the upper action ring 42 during the rotation of the eccentric impact wheel 49, the upper telescopic limit rod 43 and the upper pressure spring 44 and the lower telescopic limit rod 40 and the lower pressure spring 41 reset, driving the first stirring assembly 17 to move upward, and the first stirring assembly 17 repeats the up and down movement.
[0064] During the stirring process, the up and down movement of the first stirring assembly 17 is beneficial to the mixing of the prepared materials; during the feeding process, the up and down movement of the first stirring assembly 17 enables the materials to be fed quickly and helps the adhered materials to detach.
[0065] The coordinated operation of the three motors is realized through the PLC control system: the first driving motor 13 operates independently during the feeding stage, the three motors operate synchronously during the catalytic reaction stage, and the second driving motor 22 and the third driving motor 46 form a double-motor linkage during the feeding stage; the comprehensive energy efficiency ratio of the equipment is improved, and the single reaction cycle is shortened.
[0066] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A preparation device for the catalytic reaction of a polyurethane adhesive, comprising a catalytic reaction protective outer shell (1), characterized in that: The catalytic reaction protective housing (1) is composed of a housing main body (2), a lower converging housing (3) and a discharge pipe (4). The housing main body (2), the lower converging housing (3) and the discharge pipe (4) are arranged from top to bottom and integrally formed. A catalytic reaction preparation chamber (7) is formed inside the catalytic reaction protective housing (1). A second stirring assembly (24) is arranged inside the catalytic reaction preparation chamber (7). The second stirring assembly (24) includes a rotating intermediate shaft (26). A first stirring assembly (17) is also arranged inside the catalytic reaction preparation chamber (7). The first stirring assembly (17) includes a lower rotating sleeve (19). A fixed sleeve (28) is fixed along the lower end of the lower rotating sleeve (19) outside the rotating intermediate shaft (26). A plurality of connecting plates (29) are fixedly arranged in an annular array outside the fixed sleeve (28). The other end of the connecting plate (29) is fixed with an outer scraper (30). The outer scraper (30) is inclined in the clockwise direction. A cylindrical spiral plate (33) is fixed to the lower end of the rotating intermediate shaft (26) outside. The outer end face of the cylindrical spiral plate (33) fits the inner wall of the discharge pipe (4). A conical spiral plate (32) is arranged along the upper end of the cylindrical spiral plate (33) outside the rotating intermediate shaft (26). The conical spiral plate (32) is fixed to the cylindrical spiral plate (33). The conical spiral plate (32) and the cylindrical spiral plate (33) are spirally arranged in the clockwise direction. The outer end face of the conical spiral plate (32) fits the inner wall of the lower converging housing (3).
2. The preparation device for a polyurethane adhesive catalytic reaction according to claim 1, wherein: The rotating intermediate shaft (26) penetrates through the housing main body (2), the lower converging housing (3) and the discharge pipe (4). The upper end of the rotating intermediate shaft (26) passes through the upper end face of the housing main body (2) and extends upward. The upper end of the lower rotating sleeve (19) passes through the upper end face of the catalytic reaction protective housing (1) and extends upward. The lower rotating sleeve (19) is rotatably connected to the middle of the outside of the rotating intermediate shaft (26). A fitting plate (31) is fixed outside the outer scraper (30). The fitting plate (31) fits the inner wall of the housing main body (2). A plurality of blocking discs (20) are fixedly arranged at equal intervals outside the part of the lower rotating sleeve (19) located inside the catalytic reaction preparation chamber (7). A conical part (21) is formed on the upper end face of the blocking disc (20).
3. The preparation device for a polyurethane adhesive catalytic reaction according to claim 2, wherein: An internal fixed tooth ring (27) is fixed along the inner space of the barrier disc (20) outside the rotating intermediate shaft (26). A plurality of driven rotating gears (34) are annularly arrayed outside the internal fixed tooth ring (27). The driven rotating gears (34) are meshed and connected with the internal fixed tooth ring (27). The driven rotating gears (34) are rotationally connected with the barrier disc (20) through shafts. The installation height of the driven rotating gears (34) is less than the installation height of the internal fixed tooth ring (27). A fifth bevel gear (35) is coaxially connected to the lower end of the driven rotating gear (34). A sixth bevel gear (36) is meshed and connected to the outside of the fifth bevel gear (35). An external rotating shaft (37) is arranged outside the sixth bevel gear (36). The external rotating shaft (37) extends outwards through the outer surface of the barrier disc (20). A plurality of rotating blades (38) are annularly arrayed and fixed outside the external rotating shaft (37).
4. A preparation device for catalytic reaction of a polyurethane adhesive according to claim 2, characterized in that: One side of the upper end of the catalytic reaction protective housing (1) is welded and fixed with a first L-shaped support plate (11). A third driving motor (46) is installed inside the first L-shaped support plate (11). The output shaft end of the third driving motor (46) is connected with a seventh bevel gear (47). An eighth bevel gear (48) is meshed and connected to the side of the seventh bevel gear (47) facing the fixed sleeve (28). An eccentric impact wheel (49) is coaxially connected to the side of the eighth bevel gear (48) facing the fixed sleeve (28).
5. The preparation device for the catalytic reaction of a polyurethane adhesive according to claim 4, characterized in that: The other side of the upper end of the catalytic reaction protective housing (1) is welded and fixed with a second L-shaped support plate (12). A first driving motor (13) is installed at the upper end of the second L-shaped support plate (12). The output end of the first driving motor (13) is connected with a first bevel gear (14). A second bevel gear (15) is meshed and connected to the front end of the first bevel gear (14).
6. The preparation device for catalytic reaction of a polyurethane adhesive according to claim 5, characterized in that: A driving rotating gear (16) is installed at the lower end of the second L-shaped support plate (12). The driving rotating gear (16) is coaxially connected with the second bevel gear (15). An upper fixed tooth ring (18) is fixed at the upper end outside the lower rotating sleeve (19). The upper fixed tooth ring (18) is meshed with the driving rotating gear (16).
7. The preparation device for polyurethane adhesive catalytic reaction according to claim 6, characterized in that: A lower action ring (39) is provided at the lower end of the upper fixed gear ring (18). A plurality of lower telescopic limit rods (40) are fixedly arranged in an external annular array between the lower action ring (39) and the catalytic reaction protective housing (1). A lower pressure spring (41) is arranged along the outside of the fixed sleeve (28) between the lower action ring (39) and the catalytic reaction protective housing (1); an upper action ring (42) is provided at the upper end of the upper fixed gear ring (18). A plurality of upper telescopic limit rods (43) are fixedly arranged in an external annular array between the upper action ring (42) and the first L-shaped support plate (11). An upper pressure spring (44) is arranged along the outside of the rotating intermediate shaft (26) between the upper action ring (42) and the first L-shaped support plate (11); A plurality of balls (45) are rotatably connected to one end of the lower action ring (39) and the upper action ring (42) facing the upper fixed gear ring (18); The eccentric impact wheel (49) is located on one side of the upper end of the upper action ring (42) and is in contact with the upper action ring (42).
8. A preparation device for catalytic reaction of a polyurethane adhesive according to claim 4, characterized in that: A second driving motor (22) is installed at the upper end of the first L-shaped support plate (11). The output end of the second driving motor (22) is connected with a third bevel gear (23). The rotating intermediate shaft (26) on the second stirring assembly (24) passes through the first L-shaped support plate (11) and is connected with a fourth bevel gear (25). The fourth bevel gear (25) is meshed and connected with the third bevel gear (23).
9. The preparation device for catalytic reaction of a polyurethane adhesive according to claim 1, wherein: A vacuum insulation cavity (5) is formed inside the inner wall of the catalytic reaction protective housing (1). A heating plate (6) is embedded and fixed on the inner surface of the inner wall of the catalytic reaction protective housing (1). The energized circuit on the heating plate (6) extends to the outside.
10. The preparation device for the catalytic reaction of a polyurethane adhesive according to claim 1, wherein: A feed pipe (8) is installed at the upper end of one side of the catalytic reaction protective housing (1). A control valve (9) is installed at the lower end of the discharge pipe (4) on the catalytic reaction protective housing (1). Support frames (10) are welded and fixed at the lower ends of both sides of the outside of the catalytic reaction protective housing (1).