Stirring device for synthesizing polyurethane prepolymer

Abstract

The utility model relates to the technical field of stirring devices, in particular to a stirring device for synthesizing a polyurethane prepolymer, which comprises a stirring kettle, an end cover is fixedly mounted at the top of the stirring kettle, and a protective box is fixedly mounted on one side of the end cover. The stirring kettle disclosed by the utility model has the advantages that the speed reducing motor, the first bevel gear, the second bevel gear, the rotating shaft, the air guide hole, the hollow heat-conducting stirring rod, the cover plate, the first heating block, the air guide cover, the air guide pipe, the mounting shell and the movable heating structure are arranged in a matched manner, so that the hollow heat-conducting stirring rod heats materials in the stirring kettle while stirring; by moving the heating structure, a second heating block can move and heat the materials in the stirring kettle, so that the materials in the stirring kettle can be quickly and uniformly heated, and the time required for uniformly heating the materials in the stirring kettle is relatively short; the effect of improving the efficiency of synthesizing the polyurethane prepolymer is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring devices, in particular to a stirring device for synthesizing polyurethane prepolymers. Background Art

[0002] Polyurethane is a high molecular polymer formed by the reaction of polyisocyanate and polyether or polyester polyol under certain conditions. The prepolymer of polyurethane is simply a reactive semi-finished product obtained by controlling the reaction of polyisocyanate and polyol in a certain ratio. Due to the wide variety of polyisocyanates and polyols, the reaction ratios vary.

[0003] In the process of processing polyurethane prepolymer, a stirring device is needed to mix multiple raw materials together to synthesize polyurethane prepolymer. In the process of stirring by the stirring device, a heating structure is needed to heat the material. However, in the process of heating, the temperature is higher at the position close to the heat source, while the temperature is lower at the position far from the heat source. In order to heat the material evenly, a longer stirring time is required, which makes the overall time required for synthesizing the polyurethane prepolymer longer and the efficiency of synthesizing the polyurethane prepolymer lower. Therefore, a stirring device for synthesizing polyurethane prepolymer is needed to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the utility model is to provide a stirring device for the synthesis of polyurethane prepolymers to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides a stirring device for synthesizing polyurethane prepolymers, comprising a stirring kettle, an end cover is fixedly installed on the top of the stirring kettle, a protective box is fixedly installed on one side of the end cover, a reduction motor is fixedly installed on one side of the protective box, an output end of the reduction motor is fixedly connected to a first bevel gear, an outer surface of the first bevel gear is meshed with a second bevel gear, a rotating shaft is fixedly connected to the inner wall of the keyway of the second bevel gear, an air guide hole is opened on one side of the rotating shaft, a plurality of hollow heat-conducting stirring rods connected to the air guide holes are fixedly connected to the outer surface of the rotating shaft, a cover plate is fixedly installed on the top side of the protective box, a plurality of first heating blocks and air guide covers are fixedly installed on the bottom side of the cover plate, an air guide pipe is fixedly connected to the bottom end of the air guide cover, two mounting shells are fixedly installed on the outer surface of the stirring kettle, and both mounting shells are provided with a movable heating structure for heating the interior of the stirring kettle.

[0007] Preferably, any of the above schemes comprises an electric push rod, a heat-conducting plate, a second heating block, a heat-conducting rod and a heat-conducting block, an electric push rod is fixedly mounted on one side of the mounting shell, a heat-conducting plate is fixedly mounted on the output end of the electric push rod, a plurality of second heating blocks are fixedly mounted on one side of the heat-conducting plate, a plurality of heat-conducting rods are fixedly connected to a side of the heat-conducting plate away from the second heating block, and a plurality of heat-conducting rods are fixedly connected to a heat-conducting block at one end away from the heat-conducting plate.

[0008] Preferably, any of the above schemes is that the first bevel gear and the second bevel gear are both located inside the protection box, and the maximum diameters of the first bevel gear and the second bevel gear are both smaller than the width of the internal dimension of the protection box.

[0009] Preferably, any of the above schemes is that the rotating shaft passes through the bottom side of the protective box, passes through one side of the end cover and extends to the interior of the protective box, the rotating shaft is rotatably connected to the protective box via a bearing, and the rotating shaft is rotatably connected to the end cover via a bearing.

[0010] Preferably, in any of the above schemes, the first heating block is located inside the air guide cover, a part of the air guide pipe is located inside the air guide hole, and the outer diameter of the air guide pipe is smaller than the diameter of the air guide hole.

[0011] Preferably, in any of the above schemes, the heat conducting plate is located inside the mounting shell, the heat conducting rod passes through one side of the stirring kettle and extends to the inside of the stirring kettle, and the heat conducting rod is slidably connected to the stirring kettle.

[0012] Preferably, any of the above schemes is that the heat-conducting rod and the hollow heat-conducting stirring rod are staggered.

[0013] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0014] By coordinating the reduction motor, the first bevel gear, the second bevel gear, the rotating shaft, the air guide hole, the hollow heat-conducting stirring rod, the cover plate, the first heating block, the air guide cover, the air guide pipe, the mounting shell and the movable heating structure, the hollow heat-conducting stirring rod heats the material inside the stirring tank while stirring, and the movable heating structure can move the second heating block and heat the material inside the stirring tank, thereby quickly and evenly heating the material inside the stirring tank, so that the time required for evenly heating the material inside the stirring tank is shortened, thereby achieving the effect of improving the efficiency of synthesizing polyurethane prepolymer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2It is a schematic cross-sectional structure diagram of the stirring kettle and its connecting components of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the mobile heating structure of the utility model;

[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0019] In the figure: 1-mixing kettle, 2-end cover, 3-protection box, 4-reduction motor, 5-first bevel gear, 6-second bevel gear, 7-rotating shaft, 8-air guide hole, 9-hollow heat-conducting stirring rod, 10-cover plate, 11-first heating block, 12-air guide cover, 13-air guide pipe, 14-mounting shell, 15-movable heating structure, 1501-electric push rod, 1502-heat conduction plate, 1503-second heating block, 1504-heat conduction rod, 1505-heat conduction block. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0021] like Figures 1 to 4 As shown, a stirring device for synthesizing polyurethane prepolymers comprises a stirring kettle 1, an end cover 2 is fixedly installed on the top of the stirring kettle 1, a material adding port is arranged on the end cover 2, and raw materials required for producing polyurethane prepolymers can be added to the stirring kettle 1 through the material adding port, a protection box 3 is fixedly installed on one side of the end cover 2, a reduction motor 4 is fixedly installed on one side of the protection box 3, a first bevel gear 5 is fixedly connected to the output end of the reduction motor 4, a second bevel gear 6 is meshed on the outer surface of the first bevel gear 5, a rotating shaft 7 is fixedly connected to the inner wall of the keyway of the second bevel gear 6, an air guide hole 8 is opened on one side of the rotating shaft 7, a plurality of hollow heat-conducting stirring rods 9 connected to the air guide hole 8 are fixedly connected to the outer surface of the rotating shaft 7, a cover plate 10 is fixedly installed on the top side of the protection box 3, and a plurality of first A heating block 11 and an air guide cover 12, the bottom end of the air guide cover 12 is fixedly connected with an air guide pipe 13, and two mounting shells 14 are fixedly installed on the outer surface of the stirring kettle 1, and the two mounting shells 14 are provided with a movable heating structure 15 for heating the inside of the stirring kettle 1. When the polyurethane prepolymer inside the stirring kettle 1 is stirred, starting the first heating block 11 can heat the air inside the protective box 3, and the heated air is conducted to the inside of the hollow heat-conducting stirring rod 9 through the air guide hole 8, thereby increasing the temperature of the hollow heat-conducting stirring rod 9, and starting the reduction motor 4, the rotating shaft 7 drives the hollow heat-conducting stirring rod 9 to rotate under the transmission action of the first bevel gear 5 and the second bevel gear 6, so that the raw materials for synthesizing the polyurethane prepolymer inside the stirring kettle 1 can be stirred and the raw materials can be heated at the same time.

[0022] As an optional technical solution of the utility model, the mobile heating structure 15 includes an electric push rod 1501, a heat conducting plate 1502, a second heating block 1503, a heat conducting rod 1504 and a heat conducting block 1505. The electric push rod 1501 is fixedly installed on one side of the mounting shell 14, and the heat conducting plate 1502 is fixedly installed on the output end of the electric push rod 1501. A plurality of second heating blocks 1503 are fixedly installed on one side of the heat conducting plate 1502. A plurality of heat conducting rods 1504 are fixedly connected to a side of the heat conducting plate 1502 away from the second heating block 1503. The plurality of heat conducting rods 1504 are away from the heat conducting plate 15 02 is fixedly connected with a heat-conducting block 1505 at one end. Starting the second heating block 1503 can heat the heat-conducting plate 1502. At this time, the heat is transferred to the heat-conducting block 1505 through the heat-conducting rod 1504, thereby heating the raw material of the polyurethane prepolymer synthesized in the stirring tank 1, and by starting the electric push rod 1501, the heat-conducting plate 1502 can drive the heat-conducting rod 1504 and the heat-conducting block 1505 to move, thereby adjusting the position of the heat-conducting block 1505, so that the heat-conducting block 1505 can heat different positions of the raw material of the polyurethane prepolymer synthesized in the stirring tank 1.

[0023] As an optional technical solution of the utility model, the first bevel gear 5 and the second bevel gear 6 are both located inside the protective box 3, and the maximum diameters of the first bevel gear 5 and the second bevel gear 6 are both smaller than the width of the internal dimensions of the protective box 3, so that the first bevel gear 5 and the second bevel gear 6 can rotate smoothly, and the first bevel gear 5 and the second bevel gear 6 are protected by the protective box 3, which greatly avoids the influence of external factors on the first bevel gear 5 and the second bevel gear 6, thereby ensuring the service life of the first bevel gear 5 and the second bevel gear 6.

[0024] As an optional technical solution of the utility model, the rotating shaft 7 passes through the bottom side of the protective box 3, the rotating shaft 7 passes through one side of the end cover 2 and extends to the interior of the protective box 3, the rotating shaft 7 is rotatably connected to the protective box 3 through a bearing, the rotating shaft 7 is rotatably connected to the end cover 2 through a bearing, and the rotating shaft 7 is supported, thereby ensuring the stability of the rotating shaft 7 during rotation.

[0025] As an optional technical solution of the present utility model, the first heating block 11 is located inside the air guide cover 12, a part of the air guide pipe 13 is located inside the air guide hole 8, and the outer diameter of the air guide pipe 13 is smaller than the diameter of the air guide hole 8, which can avoid interference between the rotating shaft 7 and the air guide pipe 13 during rotation, so that the rotating shaft 7 can rotate smoothly.

[0026] As an optional technical solution of the present invention, the heat conducting plate 1502 is located inside the mounting shell 14, the heat conducting rod 1504 passes through one side of the stirring kettle 1 and extends to the inside of the stirring kettle 1, and the heat conducting rod 1504 is slidably connected to the stirring kettle 1, so that the heat conducting rod 1504 can move smoothly.

[0027] As an optional technical solution of the present invention, the heat-conducting rod 1504 and the hollow heat-conducting stirring rod 9 are staggered, which can avoid interference between the hollow heat-conducting stirring rod 9 and the heat-conducting rod 1504 during rotation, allowing the hollow heat-conducting stirring rod 9 to rotate smoothly.

[0028] A stirring device for polyurethane prepolymer synthesis, the working principle is as follows:

[0029] When the polyurethane prepolymer in the stirring tank 1 is stirred, the first heating block 11 is started to heat the air in the protective box 3, and the heated air is conducted to the inside of the hollow heat-conducting stirring rod 9 through the air guide hole 8, thereby increasing the temperature of the hollow heat-conducting stirring rod 9, and the reduction motor 4 is started, and the rotating shaft 7 drives the hollow heat-conducting stirring rod 9 to rotate under the transmission action of the first bevel gear 5 and the second bevel gear 6, so that the raw materials for synthesizing the polyurethane prepolymer in the stirring tank 1 can be stirred and heated at the same time. In addition, starting the second heating block 1503 can heat the heat conducting plate 1502. At this time, the heat is transferred to the heat conducting block 1505 through the heat conducting rod 1504, thereby heating the raw materials for synthesizing the polyurethane prepolymer inside the stirring tank 1. The electric push rod 1501 can be started to enable the heat conducting plate 1502 to drive the heat conducting rod 1504 and the heat conducting block 1505 to move, thereby adjusting the position of the heat conducting block 1505, so that the heat conducting block 1505 can heat different positions of the raw materials for synthesizing the polyurethane prepolymer inside the stirring tank 1.

[0030] In summary, the stirring device for synthesizing polyurethane prepolymer, through the coordinated arrangement of the reduction motor 4, the first bevel gear 5, the second bevel gear 6, the rotating shaft 7, the air guide hole 8, the hollow heat-conducting stirring rod 9, the cover plate 10, the first heating block 11, the air guide cover 12, the air guide pipe 13, the mounting shell 14 and the movable heating structure 15, enables the hollow heat-conducting stirring rod 9 to heat the material inside the stirring tank 1 while stirring, and the second heating block 1503 can be moved by the movable heating structure 15 to heat the material inside the stirring tank 1, so that the material inside the stirring tank 1 can be heated quickly and evenly, so that the time required for evenly heating the material inside the stirring tank 1 is short, thereby achieving the effect of improving the efficiency of synthesizing polyurethane prepolymer.

Claims

1. A stirring device for polyurethane prepolymer synthesis, characterized in that: The invention comprises a stirring kettle (1), wherein an end cover (2) is fixedly mounted on the top of the stirring kettle (1), a protection box (3) is fixedly mounted on one side of the end cover (2), a reduction motor (4) is fixedly mounted on one side of the protection box (3), a first bevel gear (5) is fixedly connected to the output end of the reduction motor (4), a second bevel gear (6) is meshed on the outer surface of the first bevel gear (5), a rotating shaft (7) is fixedly connected to the inner wall of the keyway of the second bevel gear (6), an air guide hole (8) is opened on one side of the rotating shaft (7), and an outer surface of the rotating shaft (7) is provided with a plurality of air guide holes (8). A plurality of hollow heat-conducting stirring rods (9) connected to the air guide holes (8) are fixedly connected to the surface; a cover plate (10) is fixedly installed on the top side of the protection box (3); a plurality of first heating blocks (11) and an air guide cover (12) are fixedly installed on the bottom side of the cover plate (10); an air guide pipe (13) is fixedly connected to the bottom end of the air guide cover (12); two mounting shells (14) are fixedly installed on the outer surface of the stirring kettle (1); and both mounting shells (14) are provided with a movable heating structure (15) for heating the interior of the stirring kettle (1).

2. A stirring device for polyurethane prepolymer synthesis according to claim 1, characterized in that: The movable heating structure (15) comprises an electric push rod (1501), a heat conducting plate (1502), a second heating block (1503), a heat conducting rod (1504) and a heat conducting block (1505); the electric push rod (1501) is fixedly mounted on one side of the mounting shell (14); the heat conducting plate (1502) is fixedly mounted on the output end of the electric push rod (1501); a plurality of second heating blocks (1503) are fixedly mounted on one side of the heat conducting plate (1502); a plurality of heat conducting rods (1504) are fixedly connected to a side of the heat conducting plate (1502) away from the second heating block (1503); and a plurality of heat conducting rods (1504) are fixedly connected to a heat conducting block (1505) at one end away from the heat conducting plate (1502).

3. A stirring device for polyurethane prepolymer synthesis according to claim 2, characterized in that: The first bevel gear (5) and the second bevel gear (6) are both located inside the protection box (3); the maximum diameters of the first bevel gear (5) and the second bevel gear (6) are both smaller than the width of the internal dimension of the protection box (3).

4. A stirring device for synthesizing a polyurethane prepolymer according to claim 3, characterized in that: The rotating shaft (7) passes through the bottom side of the protection box (3), passes through one side of the end cover (2) and extends to the interior of the protection box (3), the rotating shaft (7) is rotatably connected to the protection box (3) via a bearing, and the rotating shaft (7) is rotatably connected to the end cover (2) via a bearing.

5. A stirring device for polyurethane prepolymer synthesis according to claim 4, characterized in that: The first heating block (11) is located inside the air guide cover (12), a portion of the air guide pipe (13) is located inside the air guide hole (8), and the outer diameter of the air guide pipe (13) is smaller than the diameter of the air guide hole (8).

6. A stirring device for polyurethane prepolymer synthesis according to claim 5, characterized in that: The heat conducting plate (1502) is located inside the mounting shell (14), the heat conducting rod (1504) penetrates one side of the stirring kettle (1) and extends to the inside of the stirring kettle (1), and the heat conducting rod (1504) is slidably connected to the stirring kettle (1).

7. A stirring device for synthesizing a polyurethane prepolymer according to claim 6, characterized in that: The heat-conducting rod (1504) and the hollow heat-conducting stirring rod (9) are staggered in distribution.

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