Polyurethane prepolymer catalytic reaction stirring device

Abstract

The utility model discloses a polyurethane prepolymer catalytic reaction stirring device, which belongs to the technical field of stirring and comprises a stirring kettle body. A kettle body inlet is formed in the upper part of the stirring kettle body, and a kettle body outlet is formed in the lower part of the stirring kettle body; a stirring motor is fixed to the top of the stirring kettle body, a rotating shaft of the stirring motor is concentrically in butt joint with an inner stirring assembly extending into the center of the stirring kettle body, and an outer stirring assembly is rotationally connected to the inner side wall of the stirring kettle body; the outer side of the stirring kettle body is also provided with a synchronous reverse transmission assembly for simultaneously performing meshing transmission on the outer stirring assembly and the inner stirring assembly, and the rotation direction of the inner stirring assembly is completely opposite to that of the outer stirring assembly. When the stirring motor of the device drives the inner stirring assembly to rotate, under the transmission of the synchronous reverse transmission assembly, the rotation directions of the outer stirring assembly and the inner stirring assembly are completely opposite, at the moment, the oscillation amplitude is larger when the polyurethane prepolymer is stirred, the stirring effect is better, and the stirring efficiency and the mixing effect are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring, in particular to a stirring device for polyurethane prepolymer catalytic reaction. Background Technique

[0002] Polyurethane prepolymer, as a raw material of polyurethane, is usually obtained by the reaction of isocyanate and polyol. Polyurethane products formed by polyurethane prepolymer include foams, coatings, adhesives, sealants, etc.

[0003] In the existing patent literature, a patent with a publication number of CN 206823787 U and a name of "a stirring device for polyurethane reaction kettle convenient for disassembly and assembly" only stirs through a stirring rod located at the center of the kettle body. Since the polyurethane rotates and stirs in the same direction in the kettle body all the time, the oscillation amplitude of the polyurethane stirred in the kettle body is small, resulting in a longer time required for the whole stirring process and lower stirring efficiency. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a stirring device for polyurethane prepolymer catalytic reaction. When the stirring motor of the device drives the inner stirring component to rotate, under the transmission of the synchronous reverse transmission component, the rotation direction of the outer stirring component is completely opposite to that of the inner stirring component. At this time, when stirring the polyurethane prepolymer, the oscillation amplitude is larger, the stirring time will be shortened, the stirring effect is better, and the stirring efficiency and mixing effect are effectively improved.

[0005] In order to solve the above technical problems, the technical solution of the utility model is realized as follows:

[0006] A stirring device for polyurethane prepolymer catalytic reaction includes a stirring kettle body. There is a kettle body inlet opened above the stirring kettle body, and a kettle body outlet opened below the stirring kettle body. A stirring motor is fixed on the top of the stirring kettle body;

[0007] The rotating shaft of the stirring motor is concentrically butted with an inner stirring component extending into the center of the stirring kettle body, and an outer stirring component located in the same plane as the inner stirring component is rotatably connected to the inner side wall of the stirring kettle body;

[0008] An outer side of the stirring kettle body is further provided with a synchronous reverse transmission component that meshes and drives both the outer stirring component and the inner stirring component. The rotation direction of the inner stirring component is completely opposite to that of the outer stirring component.

[0009] By adopting the above scheme, when the stirring motor of the device drives the inner stirring component to rotate, under the transmission of the synchronous reverse transmission component, the rotation direction of the outer stirring component is completely opposite to that of the inner stirring component. At this time, when stirring the polyurethane prepolymer, the oscillation amplitude is larger, the stirring time will be shortened, the stirring effect is better, and the stirring efficiency and mixing effect are effectively improved.

[0010] As a preferred embodiment of a stirring device for a polyurethane prepolymer catalytic reaction, the inner stirring assembly includes a central shaft, and the central shaft is concentrically butted with the rotating shaft of the stirring motor; on the central shaft, there are multiple upper and lower layers linearly arrayed along its axial direction and multiple main stirring rods circumferentially arrayed along its circumferential direction;

[0011] Among them, multiple auxiliary stirring rods are linearly arrayed along the axial direction of each main stirring rod and are alternately distributed up and down.

[0012] Adopting the above scheme, in order to achieve stirring, by setting the inner stirring assembly, when the inner stirring assembly is driven, the main stirring rods will rotate, and at this time the auxiliary stirring rods will rotate accordingly. The auxiliary stirring rods can increase the amplitude of stirring, thereby improving the stirring effect.

[0013] As a preferred embodiment of a stirring device for a polyurethane prepolymer catalytic reaction, the outer stirring assembly includes multiple upper and lower annular frames, and the annular frames are rotatably connected to the inner side wall of the stirring kettle body; multiple stirring blades are fixed on the inner side of the annular frames and are circumferentially arrayed and inclined;

[0014] Among them, each layer of stirring blades and the main stirring rods are located in the same horizontal plane.

[0015] Adopting the above scheme, in order to generate intense oscillation during the stirring process, by setting the outer stirring assembly, when the outer stirring assembly is driven, the annular frames will rotate in the reverse direction, and at this time the stirring blades will rotate accordingly. Stirring is carried out by two sets of opposite stirring devices, which can generate intense oscillation during the stirring process, shorten the stirring time, and thereby improve the stirring efficiency and mixing effect.

[0016] As a preferred embodiment of a stirring device for a polyurethane prepolymer catalytic reaction, the synchronous reverse transmission assembly includes a driving gear, and the driving gear is concentrically butted with the rotating shaft of the stirring motor; a first driven gear is also arranged beside the driving gear and is located in the same horizontal plane. The driving gear and the first driven gear are meshed and driven by a tooth chain; a transmission shaft is also concentrically butted on the first driven gear, and multiple second driven gears are concentrically butted on the transmission shaft. A driven tooth disc that meshes with the second driven gears is also fixed on the outer side of the annular frame;

[0017] Among them, a rotating seat is fixed on the outer side surface of the stirring kettle body, and the transmission shaft is rotatably connected in the rotating seat.

[0018] Among them, an avoidance groove is penetrated and opened on the side wall of the stirring kettle body at the meshing position of the second driven gear and the driven tooth disc.

[0019] With the above solution, in order to achieve reverse transmission between the outer stirring component and the inner stirring component, when the synchronous reverse transmission component is driven, the driving gear rotates. At this time, the first driven gear rotates in the same direction as the driving gear under the transmission of the gears. At the same time, the second driven gear rotates concentrically with the first driven gear. At this time, the second driven gear drives the driven disk to rotate in the reverse direction, thereby realizing the reverse rotation of the main stirring rod and the stirring blade.

[0020] As a preferred embodiment of a polyurethane prepolymer catalytic reaction stirring device, the diameter of the driving gear is smaller than the diameter of the first driven gear.

[0021] With the above solution, in order to reduce the load during transmission, the diameter of the first driven gear is designed to be larger, so it will be more labor-saving during meshing transmission, thereby reducing the load on the stirring motor.

[0022] After adopting the above technical solution, the beneficial effects of the present utility model are:

[0023] 1. When the stirring motor of the device drives the inner stirring component to rotate, under the transmission of the synchronous reverse transmission component, the rotation directions of the outer stirring component and the inner stirring component are completely opposite. At this time, when stirring the polyurethane prepolymer, the oscillation amplitude is larger, the stirring time will be shortened, the stirring effect is better, and the stirring efficiency and mixing effect are effectively improved;

[0024] 2. In order to achieve stirring, by setting the inner stirring component, when the inner stirring component is driven, the main stirring rod rotates, and at this time the auxiliary stirring rod will rotate accordingly. The auxiliary stirring rod can increase the stirring amplitude, thereby improving the stirring effect;

[0025] 3. In order to generate intense oscillation during stirring, by setting the outer stirring component, when the outer stirring component is driven, the annular frame will rotate in the reverse direction, and at this time the stirring blade will rotate accordingly. Stirring with two sets of opposite stirring devices can generate intense oscillation during stirring, shorten the stirring time, and thereby improve the stirring efficiency and mixing effect;

[0026] 4. In order to achieve reverse transmission between the outer stirring component and the inner stirring component, when the synchronous reverse transmission component is driven, the driving gear rotates. At this time, the first driven gear rotates in the same direction as the driving gear under the transmission of the gears. At the same time, the second driven gear rotates concentrically with the first driven gear. At this time, the second driven gear drives the driven disk to rotate in the reverse direction, thereby realizing the reverse rotation of the main stirring rod and the stirring blade;

[0027] 5. In order to reduce the load during transmission, the diameter of the first driven gear is designed to be larger, so it will be more labor-saving during meshing transmission, thereby reducing the load on the stirring motor. Description of the Drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Is the three-dimensional structure of the present invention Figure 1 ;

[0030] Figure 2 Is the three-dimensional structure of the present invention Figure 2 ;

[0031] Figure 3 Is hidden Figure 1 The three-dimensional structure diagram after the stirring kettle body in

[0032] Figure 4 Is Figure 3 The schematic diagram during transmission and rotation;

[0033] Figure 5 Is Figure 3 The three-dimensional structure diagram of the inner stirring component in

[0034] Figure 6 Is Figure 5 The partial structure diagram in

[0035] Figure 7 Is Figure 3 The three-dimensional structure diagram of the outer stirring component in

[0036] Figure 8 Is Figure 3 The three-dimensional structure diagram of the synchronous reverse transmission component in

[0037] Figure 9 Is Figure 1 The three-dimensional structure diagram of the stirring kettle body in

[0038] Markings in the figure: 1 - Stirring kettle body; 2 - Kettle body inlet; 3 - Kettle body outlet; 4 - Stirring motor; 5 - Inner stirring component; 501 - Central shaft; 502 - Main stirring rod; 503 - Auxiliary stirring rod; 6 - Outer stirring component; 601 - Ring frame; 602 - Stirring blade; 7 - Synchronous reverse transmission component; 701 - Driving gear; 702 - First driven gear; 703 - Tooth chain; 704 - Transmission shaft; 705 - Second driven gear; 706 - Driven tooth disc; 8 - Rotating seat; 9 - Avoidance groove. Specific embodiments

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0040] As Figures 1 to 4 shown, a stirring device for polyurethane prepolymer catalytic reaction includes a stirring kettle body 1. A kettle body inlet 2 is provided above the stirring kettle body 1, and a kettle body outlet 3 is provided below the stirring kettle body 1. A stirring motor 4 is fixed on the top of the stirring kettle body 1;

[0041] The rotating shaft of the stirring motor 4 is concentrically butted with an inner stirring component 5 extending into the center of the stirring kettle body 1. An outer stirring component 6 located in the same plane as the inner stirring component 5 is rotatably connected to the inner side wall of the stirring kettle body 1;

[0042] An outer stirring component 6 and an inner stirring component 5 are simultaneously meshed and driven by a synchronous reverse transmission component 7 installed outside the stirring kettle body 1. The rotation direction of the inner stirring component 5 is completely opposite to that of the outer stirring component 6.

[0043] When the stirring motor 4 of the device drives the inner stirring component 5 to rotate, under the transmission of the synchronous reverse transmission component 7, the rotation direction of the outer stirring component 6 is completely opposite to that of the inner stirring component 5. At this time, the oscillation amplitude during the stirring of the polyurethane prepolymer is larger, the stirring time will be shortened, and the stirring effect is better, effectively improving the stirring efficiency and mixing effect.

[0044] As Figures 5 to 6 shown, the inner stirring component 5 includes a central shaft 501, and the central shaft 501 is concentrically butted with the rotating shaft of the stirring motor 4; A plurality of main stirring rods 502 are linearly arranged in multiple layers up and down along the axial direction of the central shaft 501 and are also arranged in a circular array along the circumferential direction of the central shaft 501;

[0045] Among them, a plurality of auxiliary stirring rods 503 are linearly arranged up and down and alternately distributed along the axial direction of each main stirring rod 502.

[0046] In order to achieve stirring, by setting the inner stirring component 5, when the inner stirring component 5 is driven, the main stirring rods 502 will rotate. At this time, the auxiliary stirring rods 503 will rotate accordingly. The auxiliary stirring rods 503 can increase the stirring amplitude, thereby improving the stirring effect.

[0047] As Figure 7 shown, the outer stirring component 6 includes a plurality of upper and lower annular frames 601, and the annular frames 601 are rotatably connected to the inner side wall of the stirring kettle body 1; A plurality of stirring blades 602 are fixed inside the annular frame 601 and are arranged in a circular array and inclined.

[0048] Among them, each layer of stirring blades 602 and the main stirring rod 502 are both located in the same horizontal plane.

[0049] In order to generate intense oscillation during the stirring process, by setting the outer stirring assembly 6, when the outer stirring assembly 6 is driven, the annular ring frame 601 will rotate in the reverse direction. At this time, the stirring blades 602 will rotate accordingly. Stirring is carried out by two sets of opposite stirring devices, which can generate intense oscillation during the stirring process, shorten the stirring time, and thus improve the stirring efficiency and mixing effect.

[0050] Such as Figures 8 to 9 As shown, the synchronous reverse transmission assembly 7 includes a driving gear 701, and the driving gear 701 is concentrically butted on the rotating shaft of the stirring motor 4; beside the driving gear 701, there is also a first driven gear 702 located in the same horizontal plane. The driving gear 701 and the first driven gear 702 are meshed and driven by a toothed chain 703; a transmission shaft 704 is also concentrically butted on the first driven gear 702, and multiple second driven gears 705 are concentrically butted on the transmission shaft 704. On the outer side of the annular ring frame 601, there is also a driven tooth disc 706 that meshes and drives with the second driven gear 705;

[0051] Among them, a rotating seat 8 is fixed on the outer side surface of the stirring kettle body 1, and the transmission shaft 704 is rotatably connected in the rotating seat 8.

[0052] Among them, an avoidance groove 9 is penetrated and opened on the side wall of the stirring kettle body 1 at the meshing position of the second driven gear 705 and the driven tooth disc 706.

[0053] In order to achieve reverse transmission between the outer stirring assembly 6 and the inner stirring assembly 5, when the synchronous reverse transmission assembly 7 is driven, the driving gear 701 rotates. At this time, the first driven gear 702 rotates in the same direction as the driving gear 701 under the transmission of the gear. At the same time, the second driven gear 705 rotates concentrically with the first driven gear 702. At this time, the second driven gear 705 will drive the driven tooth disc 706 to rotate in the reverse direction, thereby realizing the reverse rotation of the main stirring rod 502 and the stirring blades 602.

[0054] Such as Figure 8 As shown, the diameter of the driving gear 701 is smaller than the diameter of the first driven gear 702. In order to reduce the load during transmission, the diameter of the first driven gear 702 is designed to be larger, so it will be more labor-saving during meshing transmission, thereby reducing the load on the stirring motor 4.

[0055] The working principle of the present utility model:

[0056] During application, the device is installed inside the main catalytic reaction kettle. The polyurethane prepolymer after the catalytic reaction will enter the inside of the stirring kettle body 1 from the kettle body inlet 2. After stirring is completed, the polyurethane prepolymer is discharged from the kettle body outlet 3.

[0057] During stirring, the stirring motor 4 is started, and the inner stirring component 5 is driven by the stirring motor 4 to rotate. When the inner stirring component 5 is driven, the main stirring rod 502 will rotate, and at this time, the auxiliary stirring rod 503 will rotate accordingly. The amplitude of stirring can be increased through the auxiliary stirring rod 503, thereby improving the stirring effect.

[0058] Meanwhile, when the synchronous reverse transmission component 7 is also driven accordingly, the driving gear 701 rotates. At this time, the first driven gear 702 rotates in the same direction as the driving gear 701 under the transmission of the gears. Meanwhile, the second driven gear 705 rotates concentrically with the first driven gear 702. At this time, the second driven gear 705 drives the driven disk 706 to rotate in the reverse direction, then the annular frame 601 will rotate in the reverse direction, and at this time, the stirring blades 602 will rotate accordingly. Stirring is carried out through two sets of opposite stirring devices, which can generate intense oscillations during the stirring process, shorten the stirring time, thereby improving the stirring efficiency and mixing effect.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A polyurethane prepolymer catalytic reaction stirring device, comprising a stirring kettle (1), a kettle inlet (2) is provided on the top of the stirring kettle (1), a kettle outlet (3) is provided on the bottom of the stirring kettle (1), and a stirring motor (4) is fixed on the top of the stirring kettle (1); Features: The rotating shaft of the stirring motor (4) is coaxially connected to an inner stirring assembly (5) extending into the center of the stirring kettle body (1); and an outer stirring assembly (6) located in the same plane as the inner stirring assembly (5) is rotatably connected to the inner side wall of the stirring kettle body (1); The outer side of the stirring kettle body (1) is also provided with a synchronous reverse transmission component (7) for simultaneously meshing and transmitting the outer stirring component (6) and the inner stirring component (5); the rotation direction of the inner stirring component (5) is completely opposite to the rotation direction of the outer stirring component (6).

2. The polyurethane prepolymer catalytic reaction stirring device according to claim 1, characterized in that: The inner stirring assembly (5) comprises a central shaft (501), and the central shaft (501) is coaxially connected to the rotating shaft of the stirring motor (4); the central shaft (501) has multiple layers of upper and lower linear arrays along its axial direction and multiple main stirring rods (502) along its circumferential circular array.

3. The polyurethane prepolymer catalytic reaction stirring device according to claim 2, characterized in that: Each of the main stirring rods (502) is provided with a plurality of auxiliary stirring rods (503) arranged in a linear array along its axial direction and arranged alternately up and down.

4. The polyurethane prepolymer catalytic reaction stirring device according to claim 3, characterized in that: The external stirring assembly (6) comprises a plurality of upper and lower multi-layer annular ring frames (601), wherein the annular ring frames (601) are rotatably connected to the inner wall of the stirring kettle body (1); a plurality of stirring blades (602) arranged in a circular array and tilted are fixed to the inner side of the annular ring frame (601).

5. The polyurethane prepolymer catalytic reaction stirring device according to claim 4, characterized in that: The stirring blades (602) and the main stirring rods (502) of each layer are located in the same horizontal plane.

6. The polyurethane prepolymer catalytic reaction stirring device according to claim 5, characterized in that: The synchronous reverse transmission assembly (7) comprises a driving gear (701), wherein the driving gear (701) is coaxially connected to the rotating shaft of the stirring motor (4); a driven gear 1 (702) located in the same horizontal plane is also arranged beside the driving gear (701), and the driving gear (701) and the driven gear 1 (702) are meshed and transmitted via a toothed chain (703).

7. The polyurethane prepolymer catalytic reaction stirring device according to claim 6, characterized in that: The driven gear one (702) is also coaxially connected to a transmission shaft (704), and the transmission shaft (704) is coaxially connected to multiple driven gears two (705). The outer side of the annular ring frame (601) is also fixed with a driven gear plate (706) that meshes with the driven gear two (705) for transmission.

8. The polyurethane prepolymer catalytic reaction stirring device according to claim 7, characterized in that: A rotating seat (8) is fixed on the outer side surface of the stirring kettle body (1), and the transmission shaft (704) is rotatably connected to the rotating seat (8).

9. The polyurethane prepolymer catalytic reaction stirring device according to claim 7, characterized in that: An avoidance groove (9) is provided on the side wall of the stirring kettle body (1) at the meshing position between the second driven gear (705) and the driven gear plate (706).

10. The polyurethane prepolymer catalytic reaction stirring device according to claim 7, characterized in that: The diameter of the driving gear (701) is smaller than the diameter of the driven gear 1 (702).

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