Mixing device for polyurethane resin processing

Abstract

The utility model discloses a mixing device for processing polyurethane resin, which comprises a base, a stirring kettle and a stirring component, the stirring kettle is arranged at the upper end of the base, the stirring component is arranged at the upper end of the stirring kettle, the lower end of the stirring component extends into the stirring kettle, and the stirring component comprises a positive and negative rotation motor, a rotating pipe sleeve and a stirring pipe. A motor supporting frame is arranged in the middle of the upper top wall of the stirring kettle, the forward and reverse rotation motor is arranged on one side of the motor supporting frame, the rotating pipe sleeve is rotationally arranged in the middle of the inner top wall of the stirring kettle, and the upper end of the rotating pipe sleeve extends into the motor supporting frame. The utility model relates to the technical field of resin processing equipment, in particular to a mixing device for processing waterborne polyurethane resin, which has a good stirring effect and can prevent material precipitation and material adhesion and improve the mixing effect of raw materials.

Description

Technical Field

[0001] The utility model relates to the technical field of resin processing equipment, in particular to a mixing device for processing polyurethane resin. Background Art

[0002] Waterborne polyurethane resin is a type of waterborne resin, mainly a polyurethane with water as the dispersion medium. Among waterborne resins, since waterborne polyurethane is a representative of excellent resins, it can play an important role in leather coatings, adhesives and other fields. In the production process of waterborne polyurethane, a neutralizer is required to make the waterborne polyurethane dispersible in water, so a stirring kettle is required to stir and mix it.

[0003] Most existing waterborne polyurethane resin stirring kettles cannot fully stir the waterborne polyurethane resin and the neutralizer, and materials are prone to sedimentation at the bottom of the stirring kettle, thereby reducing the stirring effect and stirring quality of the polyurethane resin. Therefore, improvements need to be made to the existing problems. Utility Model Content

[0004] In view of the above situation, in order to overcome the current technical defects, the utility model provides a mixing device for processing waterborne polyurethane resin with good stirring effect. The device can prevent material precipitation and material adhesion, and can improve the mixing effect of raw materials.

[0005] The technical scheme adopted by the utility model is as follows: the mixing device for polyurethane resin processing proposed in the scheme comprises a base, a stirring kettle and a stirring assembly, the stirring kettle is arranged at the upper end of the base, the stirring assembly is arranged at the upper end of the stirring kettle, the lower end of the stirring assembly extends into the stirring kettle, the stirring assembly comprises a forward and reverse motor, a rotating pipe sleeve and a stirring pipe, a motor support frame is arranged in the middle of the upper top wall of the stirring kettle, the forward and reverse motor is arranged on one side of the motor support frame, the rotating pipe sleeve is rotatably arranged in the middle of the inner top wall of the stirring kettle and the upper end extends into the motor support frame, the stirring pipe is rotatably arranged in the middle of the inner top wall of the motor support frame, the lower end of the stirring pipe penetrates the rotating pipe sleeve and extends into the stirring kettle, an active bevel gear is arranged on the output shaft of the forward and reverse motor, and a driven bevel gear matched with the active bevel gear is respectively arranged on the rotating pipe sleeve and the stirring pipe, and the active bevel gear is meshed with the driven bevel gear.

[0006] In order to facilitate the addition of neutralizing agent and prevent material precipitation, a three-way rotary joint is provided at the upper end of the stirring tube, one end of the three-way rotary joint is connected to a liquid guide tube, the lower end of the stirring tube is connected to a disc-shaped discharge cavity, and a plurality of groups of discharge holes are provided on the disc-shaped discharge cavity at intervals. A stirring shaft is rotatably provided at the bottom of the stirring kettle, and a spiral stirring blade is provided on the stirring shaft. The upper end of the stirring shaft is connected to the middle part of the lower bottom wall of the disc-shaped discharge cavity.

[0007] In order to improve the stirring effect and prevent the material from adhering to the inner wall of the stirring kettle, a plurality of scraper racks for scraping the inside of the stirring kettle are arranged at intervals on the rotating tube sleeve, and a plurality of stirring rods are arranged at intervals on the scraper rack and the stirring tube.

[0008] In order to further improve the stirring and mixing effect and prevent precipitation, a ventilator is provided on one side of the top wall of the reactor, and an air guide pipe is provided on the ventilator through an air pump, and the air guide pipe is connected to the other end of the three-way rotary joint.

[0009] Wherein, a feeding cylinder is provided on one side of the top of the stirring kettle, and a discharging valve is provided on the bottom of the stirring kettle.

[0010] The beneficial effects achieved by the utility model by adopting the above structure are as follows: the utility model is a mixing device for processing polyurethane resin, which has the advantages that: the stirring assembly can make the stirring rods on the scraper frame and the stirring tube rotate in opposite directions to each other, so as to stir and mix the water-based polyurethane resin raw materials and scrape the materials adhering to the stirring kettle at the same time; the stirring tube can simultaneously drive the spiral stirring blades to rotate when stirring the materials, so as to stir the bottom plate of the stirring kettle and prevent the materials from settling; the ventilator can discharge the gas through the disc-shaped discharge cavity, so as to cooperate with the spiral stirring blades to further stir and mix the polyurethane resin raw materials and improve the stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the overall structure of the mixing device for processing polyurethane resin proposed by the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the mixing device for processing polyurethane resin proposed by the utility model;

[0014] Figure 3 The three-dimensional structure diagram of the stirring assembly of the mixing device for processing polyurethane resin proposed in the utility model Figure 1 ;

[0015] Figure 4 The three-dimensional structure diagram of the stirring assembly of the mixing device for processing polyurethane resin proposed in the utility model Figure 2 .

[0016] Among them, 1. stirring kettle, 2. stirring assembly, 3. forward and reverse motor, 4. rotating pipe sleeve, 5. stirring pipe, 6. motor support frame, 7. driving bevel gear, 8. driven bevel gear, 9. three-way rotary joint, 10. liquid guide pipe, 11. disc-shaped discharge cavity, 12. discharge hole, 13. stirring shaft, 14. spiral stirring blade, 15. scraper frame, 16. stirring rod, 17. ventilator, 18. air guide pipe, 19. feed barrel, 20. discharge valve. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical scheme adopted by the utility model is as follows: the mixing device for polyurethane resin processing proposed in this scheme comprises a base, a stirring tank 1 and a stirring assembly 2, the stirring tank 1 is arranged at the upper end of the base, the stirring assembly 2 is arranged at the upper end of the stirring tank 1, a feeding cylinder 19 is arranged on one side of the top of the stirring tank 1, a discharge valve 20 is arranged at the bottom of the stirring tank 1, the lower end of the stirring assembly 2 extends into the stirring tank 1, the stirring assembly 2 comprises a forward and reverse motor 3, a rotating pipe sleeve 4 and a stirring pipe 5, a motor support frame 6 is arranged in the middle of the upper top wall of the stirring tank 1, the forward and reverse motor 3 is arranged on one side of the motor support frame 6, the rotating pipe sleeve 4 is rotatably arranged in the middle of the inner top wall of the stirring tank 1 and the upper end extends into the motor support frame 6, the stirring pipe 5 is rotatably arranged in the middle of the inner top wall of the motor support frame 6, and the lower end of the stirring pipe 5 passes through the rotating pipe sleeve 4 and extends to the stirring In the mixing kettle 1, a driving bevel gear 7 is provided on the output shaft of the forward and reverse motor 3, and a driven bevel gear 8 matched with the driving bevel gear 7 is respectively provided on the rotating tube sleeve 4 and the stirring tube 5, and the driving bevel gear 7 is meshed with the driven bevel gear 8. A three-way rotary joint 9 is provided at the upper end of the stirring tube 5, and one end of the three-way rotary joint 9 is connected with a liquid guide tube 10. A ventilator 17 is provided on one side of the top wall of the reactor, and an air guide tube 18 is provided on the ventilator 17 through an air pump. The air guide tube 18 is connected with the other end of the three-way rotary joint 9, and the lower end of the stirring tube 5 is connected with a disc-shaped discharge chamber 11, and a plurality of groups of discharge holes 12 are arranged on the disc-shaped discharge chamber 11 at intervals. A stirring shaft 13 is rotatably provided at the bottom of the stirring kettle 1, and a spiral stirring blade 14 is provided on the stirring shaft 13. The upper end of the stirring shaft 13 is connected to the middle part of the lower bottom wall of the disc-shaped discharge chamber 11.

[0020] like Figure 2 As shown, a plurality of scraper frames 15 for scraping the inside of the stirring tank 1 are arranged at intervals on the rotating tube sleeve 4, and a plurality of stirring rods 16 are arranged at intervals and staggered on the scraper frames 15 and the stirring tube 5.

[0021] When used, the water-based polyurethane resin raw material is introduced into the stirring kettle 1 through the feeding cylinder 19, and the forward and reverse motor 3 is started to drive the rotating pipe sleeve 4 and the stirring pipe 5 to rotate in opposite directions through the meshing of the driving bevel gear 7 and the driven bevel gear 8, so that the scraper frame 15 and the stirring rod 16 on the stirring pipe 5 stir and mix the water-based polyurethane resin raw material, and scrape the material adhering to the stirring kettle 1;

[0022] During the stirring process, the neutralizer is introduced into the stirring tube 5 through the liquid guide tube 10 and the three-way rotary joint 9, and discharged through the rotation of the disc-shaped discharge cavity 11, and then mixed with the polyurethane resin raw material. During the mixing process, the spiral stirring blade 14 rotates accordingly to stir the bottom plate of the stirring tank 1 to prevent material precipitation;

[0023] The ventilator 17 can guide the gas into the disc-shaped discharge chamber 11 through the air guide pipe 18 and the stirring tube 5, and discharge it through the discharge hole 12, so as to cooperate with the spiral stirring blade 14 to further stir and mix the polyurethane resin raw material and the neutralizer, prevent precipitation, and improve the stirring effect.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mixing device for processing polyurethane resin, comprising a base and a stirring kettle, characterized in that: It also includes a stirring component, the stirring kettle is arranged at the upper end of the base, the stirring component is arranged at the upper end of the stirring kettle, and the lower end of the stirring component extends into the stirring kettle: The stirring assembly includes a forward and reverse motor, a rotating tube sleeve and a stirring tube. A motor support frame is provided in the middle of the upper top wall of the stirring kettle. The forward and reverse motor is arranged on one side of the motor support frame. The rotating tube sleeve is rotatably arranged in the middle of the inner top wall of the stirring kettle and the upper end extends into the motor support frame. The stirring tube is rotatably arranged in the middle of the inner top wall of the motor support frame. The lower end of the stirring tube passes through the rotating tube sleeve and extends into the stirring kettle. An active bevel gear is provided on the output shaft of the forward and reverse motor. A driven bevel gear matched with the active bevel gear is respectively provided on the rotating tube sleeve and the stirring tube. The driving bevel gear is meshed with the driven bevel gear, and a three-way rotary joint is provided at the upper end of the stirring tube, one end of the three-way rotary joint is connected to a liquid guide tube, and the lower end of the stirring tube is connected to a disc-shaped discharge cavity, and a plurality of groups of discharge holes are arranged at intervals on the disc-shaped discharge cavity, and a stirring shaft is rotatably arranged at the bottom of the stirring kettle, and a spiral stirring blade is arranged on the stirring shaft, and the upper end of the stirring shaft is connected to the middle part of the lower bottom wall of the disc-shaped discharge cavity, and a plurality of groups of scraping frames for scraping the inside of the stirring kettle are arranged at intervals on the rotating tube sleeve, and a plurality of groups of stirring rods are arranged alternately on the scraping frame and the stirring tube.

2. A mixing device for processing polyurethane resin according to claim 1, characterized in that: A ventilator is arranged on one side of the top wall of the stirring kettle, and an air guide pipe is arranged on the ventilator through an air pump, and the air guide pipe is communicated with the other end of the three-way rotary joint.

3. A mixing device for processing polyurethane resin according to claim 2, characterized in that: A feeding cylinder is arranged on one side of the top of the stirring kettle, and a discharging valve is arranged on the bottom of the stirring kettle.

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