Polyurethane preparation reaction kettle

Abstract

The utility model discloses a polyurethane preparation reaction kettle, and relates to the technical field of reaction kettles, a cover plate is arranged above the reaction kettle, the reaction kettle and the cover plate are detachably connected through a bolt assembly, and a main shaft drives a main gear to rotate after a motor works. A plurality of auxiliary gears in meshed connection with the main gear can drive an auxiliary shaft to rotate in the reaction kettle, three stirring assemblies arranged on the auxiliary shaft can stir materials of different degrees, and meanwhile, two spiral blades on the outer wall of the auxiliary shaft can also rotate along with the auxiliary shaft, so that liquid below the auxiliary shaft is conveyed upwards and is stirred by the stirring assemblies, and the stirring effect is improved. The rotation between the gears and the position between the main shaft and the cover plate are rotationally connected through the two sealing bearings, and the outer wall of the main shaft is smooth and does not generate a gap, so that the reaction kettle and the cover plate are sealed and connected through bolts after being covered, and the sealing effect is good; and the condition of leakage is avoided during reaction.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettles, in particular to a polyurethane preparation reaction kettle. Background Art

[0002] According to the application number "CN202121261994.4", by setting up a servo motor, starting the servo motor to rotate forward to drive the second gear to rotate and then the first gear to rotate, the threaded rod rotates synchronously to drive the stirring rod and the stirring blade to rotate. The threaded rod moves down under the action of the threaded sleeve while rotating. Similarly, starting the servo motor in the reverse direction makes the stirring blade move up while rotating, so that stirring can be performed at different heights in the reactor, thereby achieving the purpose of sufficient stirring.

[0003] In the process of implementing the solution, the inventors found that the following problems existed in the prior art and were not well solved:

[0004] 1. The box body is equivalent to a reactor. When the reactor is working, there is a certain pressure inside it. There is no bearing seal between the threaded rod and the box body. Since there is a lifting and sliding mechanism between the mounting box and the mounting plate, even if the screw rod and the mounting box are connected by a bearing, the seal between the box body, the mounting box and the mounting plate cannot be guaranteed. Even if a sealed bearing is used, there are a lot of gaps in the screw thread, and the sealed bearing cannot guarantee the sealing of the reactor when it is working.

[0005] 2. Although the screw can drive the stirring blades to rise and fall when rotating, different materials will be added when the polyurethane is prepared through the reactor, resulting in different viscosities. The rotation of the threaded connection will slow down due to the influence of viscosity, thereby reducing the stirring speed and affecting the stirring effect. Utility Model Content

[0006] The main purpose of the utility model is to provide a polyurethane preparation reactor, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A polyurethane preparation reactor, comprising a reactor, a cover plate is provided above the reactor, the reactor and the cover plate are detachably connected by a bolt assembly, a motor is fixed on the top of the cover plate, a main shaft is fixed on the output end of the motor, an end of the main shaft away from the motor is in communication with the cover plate, an end of the main shaft passing through the cover plate is inserted into the reactor, main gears are fixed at the top and bottom ends of the main shaft in the reactor, a plurality of secondary shafts are provided in a circular array at the side wall of the reactor, secondary gears are fixed on the outer walls at the top and bottom ends of the secondary shaft, the secondary gears are respectively meshed and connected with the sides close to the main gears, three stirring assemblies are equidistantly fixed on the outer wall of the secondary shaft located between the main gears, spiral blades are provided on the outer walls of the secondary shaft located between adjacent stirring assemblies, two sealed bearings are installed on the cover plate at the penetration of the main shaft, and the main shafts are respectively in communication with the inner rings of the sealed bearings.

[0009] Preferably, side brackets are fixed to the top and bottom of the secondary shaft, and the side brackets are respectively fixedly connected to the inner wall of the reactor.

[0010] Preferably, the bottom of the main shaft is rotatably connected to a bearing seat, a bottom bracket is fixed to the position of the reactor below the bearing seat, and the bearing seat is located on the top of the bottom bracket.

[0011] Preferably, a plurality of ear tubes are fixed to the outer wall of the bearing seat, and a plurality of insertion rods are fixed to the top of the bottom bracket, and the insertion rods are respectively penetrated and communicated with the ear tubes matching in position.

[0012] Preferably, the outer dimensions of the insertion rod match the inner dimensions of the ear tube.

[0013] Preferably, the outer rings of the sealed bearings are respectively connected to the cover plates by welding, and the inner rings of the sealed bearings are respectively connected to the outer wall of the main shaft by welding.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The main shaft drives the main gear to rotate after the motor works. Several sub-gears meshing with the main gear will drive the sub-shaft to rotate in the reactor. The three stirring components arranged on the sub-shaft can stir the materials to different degrees. At the same time, the two spiral blades on the outer wall of the sub-shaft will also rotate, thereby transporting the liquid below upward, and then stirring it through the stirring component. The cycle is reciprocating, and the stirring effect is good. The rotation between the gears is good.

[0016] 2. The main shaft and the cover plate are rotatably connected via two sealed bearings. Since the outer wall of the main shaft is smooth and does not produce gaps, after the reactor and the cover plate are sealed and connected via bolts, there will be no leakage during the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a polyurethane preparation reaction kettle of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a reactor and a cover plate of a polyurethane preparation reactor of the utility model after sectioning;

[0019] Figure 3 This is a schematic structural diagram of a polyurethane preparation reactor of the utility model, in which a main gear is connected to a secondary gear on a single secondary shaft;

[0020] Figure 4 The utility model is a schematic diagram of the separation structure of the ear tube and the plug rod of a polyurethane preparation reactor.

[0021] In the figure: 1. Reactor; 2. Cover plate; 3. Motor; 4. Main shaft; 5. Sealed bearing; 6. Main gear; 7. Sub-shaft; 8. Stirring assembly; 9. Spiral blade; 10. Sub-gear; 11. Side bracket; 12. Bearing seat; 13. Ear; 14. Bottom bracket; 15. Rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-4 As shown, a polyurethane preparation reactor comprises a reactor 1, a cover plate 2 is arranged above the reactor 1, the reactor 1 and the cover plate 2 are detachably connected by a bolt assembly, a motor 3 is fixed on the top of the cover plate 2, a main shaft 4 is fixed on the output end of the motor 3, one end of the main shaft 4 away from the motor 3 is connected through the cover plate 2, one end of the main shaft 4 passes through the cover plate 2 and is inserted into the reactor 1, main gears 6 are fixed at the top and bottom positions of the main shaft 4 inside the reactor 1, a plurality of secondary shafts 7 are arranged in a circular array at the side wall of the reactor 1, secondary gears 10 are fixed on the outer walls of the top and bottom ends of the secondary shaft 7, and the secondary gears 10 are respectively meshed and connected with the side close to the main gear 6, three stirring assemblies 8 are equidistantly fixed on the outer wall of the secondary shaft 7 located between the main gears 6, and spiral blades 9 are arranged on the outer wall of the secondary shaft 7 located between adjacent stirring assemblies 8, two sealed bearings 5 ​​are installed at the penetration of the cover plate 2 at the main shaft 4, and the main shaft 4 is connected through the inner ring of the sealed bearing 5 respectively.

[0024] Specifically, side brackets 11 are fixed to the top and bottom of the secondary shaft 7 , and the side brackets 11 are respectively fixedly connected to the inner wall of the reactor 1 , so that the secondary shaft 7 is more stable when rotating.

[0025] Specifically, the bottom of the main shaft 4 is rotatably connected with a bearing seat 12, and a bottom bracket 14 is fixed to the position of the reactor 1 below the bearing seat 12. The bearing seat 12 is located on the top of the bottom bracket 14, and a plurality of ear tubes 13 are fixed to the outer wall of the bearing seat 12. A plurality of plug rods 15 are fixed to the top of the bottom bracket 14. The plug rods 15 are respectively connected with the ear tubes 13 of matching positions, and the outer dimensions of the plug rods 15 are respectively matched with the inner dimensions of the ear tubes 13. When the reactor 1 and the cover plate 2 are disassembled, the ear tubes 13 can be directly pulled out from the outer wall of the plug rods 15, so that the main shaft 4 can be pulled out of the reactor 1. However, when the reactor 1 and the cover plate 2 are connected, the plug rods 15 can limit the ear tubes 13, so that the rotation of the main shaft 4 is more stable.

[0026] Specifically, the outer ring of the sealed bearing 5 is welded to the cover plate 2, and the inner ring of the sealed bearing 5 is welded to the outer wall of the main shaft 4. The welding here is full welding to ensure the sealing.

[0027] Working principle: the main shaft 4 drives the main gear 6 to rotate after the motor 3 works, and several sub-gears 10 meshing with the main gear 6 will drive the sub-shaft 7 to rotate in the reactor 1, and the three stirring components 8 arranged on the sub-shaft 7 can stir the materials to different degrees. At the same time, the two spiral blades 9 on the outer wall of the sub-shaft 7 will also rotate, so as to transport the liquid below upward, and then stir it through the stirring component 8, and the stirring effect is good. The rotation between the gears and the position between the main shaft 4 and the cover plate 2 are rotatably connected through two sealed bearings 5. Since the outer wall of the main shaft 4 is smooth and no gap is generated, after the reactor 1 and the cover plate 2 are covered and sealed by bolts, there will be no leakage during the reaction.

[0028] The connection between the reactor 1 and the cover plate 2 of the present application contains sealing components such as sealing rubber, which is a well-known and mature prior art and will not be described in detail in the present application.

[0029] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A polyurethane preparation reactor, comprising a reactor (1), characterized in that: A cover plate (2) is provided above the reactor (1), and the reactor (1) and the cover plate (2) are detachably connected via a bolt assembly. A motor (3) is fixed on the top of the cover plate (2), and a main shaft (4) is fixed on the output end of the motor (3). The end of the main shaft (4) away from the motor (3) is connected to the cover plate (2). The end of the main shaft (4) that passes through the cover plate (2) is inserted into the reactor (1). Main gears (6) are fixed at the top and bottom of the main shaft (4) inside the reactor (1). The side wall of the reactor (1) is provided with a circular array. A plurality of secondary shafts (7) are arranged in a row, secondary gears (10) are fixed on the outer walls of the top and bottom ends of the secondary shafts (7), and the secondary gears (10) are respectively meshed and connected with the side close to the main gear (6), three stirring assemblies (8) are equidistantly fixed on the outer wall of the secondary shaft (7) located between the main gears (6), and spiral blades (9) are arranged on the outer wall of the secondary shaft (7) located between adjacent stirring assemblies (8), and two sealed bearings (5) are installed at the penetration point of the cover plate (2) located on the main shaft (4), and the main shaft (4) is respectively penetrated and communicated with the inner ring of the sealed bearing (5).

2. A polyurethane preparation reactor according to claim 1, characterized in that: Side brackets (11) are fixed to the top and bottom of the secondary shaft (7), and the side brackets (11) are respectively fixedly connected to the inner wall of the reaction kettle (1).

3. A polyurethane preparation reactor according to claim 1, characterized in that: The bottom of the main shaft (4) is rotatably connected to a bearing seat (12); a bottom bracket (14) is fixed to a position of the reaction kettle (1) below the bearing seat (12); and the bearing seat (12) is seated on top of the bottom bracket (14).

4. A polyurethane preparation reactor according to claim 3, characterized in that: A plurality of ear tubes (13) are fixed on the outer wall of the bearing seat (12), and a plurality of insertion rods (15) are fixed on the top of the bottom bracket (14), wherein the insertion rods (15) are respectively penetrated and communicated with the ear tubes (13) at matching positions.

5. A polyurethane preparation reactor according to claim 4, characterized in that: The outer dimensions of the insertion rod (15) respectively match the inner dimensions of the ear tube (13).

6. A polyurethane preparation reactor according to claim 1, characterized in that: The outer rings of the sealed bearings (5) are respectively connected to the cover plates (2) by welding, and the inner rings of the sealed bearings (5) are respectively connected to the outer wall of the main shaft (4) by welding.

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