Multi-stage stirring reaction kettle for TPU (thermoplastic polyurethane) production

Abstract

The utility model relates to a multistage stirring reaction kettle for TPU (thermoplastic polyurethane) production, which belongs to the technical field of reaction kettles and comprises a reaction kettle body and supporting legs mounted on the outer side wall of the reaction kettle body in a circumferential array manner. A first driving gear and a second driving gear are rotationally connected to the top of the kettle cover from left to right in sequence, stirring rods are connected to the bottom of the first driving gear and the bottom of the second driving gear, a driving motor is connected to the top of the kettle cover through a support, and a driving gear is connected to an output shaft of the driving motor; a linkage rod is connected to the top of the first driving gear, a linkage gear is mounted at the top of the linkage rod, rectangular rods with grooves in the tops are symmetrically connected to the top of the kettle cover, linkage type premixing assemblies are arranged on the rectangular rods, and when TPU raw materials are mixed through the reaction kettle body, unmixed raw materials can be premixed through the linkage type premixing assemblies, so that the TPU raw materials can be premixed, and the TPU raw materials can be premixed. The subsequent mixing processing efficiency is improved, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettles, in particular to a multi-stage stirring reaction kettle for TPU production. Background Art

[0002] TPU is a thermoplastic polyurethane elastomer material. This material combines the characteristics of plastic and rubber, with both the processing performance of plastic and the elasticity and wear resistance of rubber. When TPU is processed, it needs to be stirred and mixed in a reactor.

[0003] The current application document with application number CN202120654062.X discloses a multi-stage stirred reactor for TPU resin production, including a reactor cylinder, a connecting block is provided at the middle of the inner cavity and the lower end of the inner cavity of the reactor cylinder, a plurality of stirring blades distributed in a ring array are fixedly connected to the outer wall of the connecting block, a reversing assembly is provided between the two connecting blocks, and the reversing assembly includes a hollow cylinder, and the inner walls of the upper and lower sides of the hollow cylinder are both fitted with circular plates, and the sides of the two circular plates close to each other are fixedly connected with annular teeth, and reversing gears are provided on both sides of the middle of the inner cavity of the hollow cylinder. The utility model is provided with circular plates at the inner cavities at the upper and lower ends of the hollow cylinder, and the two circular plates are meshed and connected by two reversing gears, so that the two circular plates can rotate synchronously in the opposite direction, thereby driving the fixed rods on the outside of the two connecting blocks to rotate synchronously in the opposite direction, thereby improving the stirring effect of the TPU resin.

[0004] When in use, the above technical solution can make the stirring blades on the outer sides of the two connecting blocks rotate in opposite directions, so as to stir the resin raw materials more evenly, and has strong practicality. However, the above technical solution is not convenient for pre-mixing the raw materials to improve the subsequent mixing efficiency. Utility Model Content

[0005] In order to overcome the technical defects of the prior art, the utility model provides a multi-stage stirring reactor for TPU production, which can premix unmixed raw materials through a linkage premixing component, thereby improving the subsequent mixing processing efficiency.

[0006] The technical solution adopted by the utility model is: it includes a reactor body and support legs installed in a circular array on the outer side wall of the reactor body, the top of the reactor body is connected to a reactor cover, the top of the reactor cover is rotatably connected to a first driving gear and a second driving gear from left to right, the bottom of the first driving gear and the bottom of the second driving gear are both connected to a stirring rod, the top of the reactor cover is connected to a driving motor through a bracket, the output shaft of the driving motor is connected to a driving gear, the top of the first driving gear is connected to a linkage rod, the top of the linkage rod is equipped with a linkage gear, the top of the reactor cover is symmetrically connected to a rectangular rod with a groove on the top, a linkage pre-mixing component is provided on the rectangular rod, and a positioning component is connected to the rectangular rod.

[0007] Preferably, in order to rotate the second driving gear through the first driving gear, the first driving gear is meshed with the second driving gear, and the stirring rod is located in the reactor body.

[0008] Preferably, in order to connect the plug rod to the rectangular rod, the linkage premixing assembly includes a plug rod arranged in a groove at the top of the rectangular rod, a premixing barrel is connected to the outer wall of one end of the plug rod, and a mixing rod is rotatably installed in the premixing barrel.

[0009] Preferably, in order to rotate the mixing rod through the mixing gear, one end of the mixing rod extends to the outside of the pre-mixing barrel, and a mixing gear is connected to one end of the mixing rod, and the mixing gear is meshed with the linkage gear.

[0010] Preferably, in order to position the rectangular plate through the side rod, the positioning assembly includes a side rod installed on the outer wall of the rectangular rod, and a rectangular plate with a rectangular groove on the top surface is fixedly installed on one end of the side rod, and a bidirectional screw rod is rotatably connected in the rectangular groove on the top surface of the rectangular plate.

[0011] Preferably, in order to displace the movable plate, a positioning motor is installed on the outer wall of the rectangular plate, the output shaft of the positioning motor is connected to one end of the bidirectional screw rod, and the movable plate is threadedly connected to both ends of the bidirectional screw rod.

[0012] Preferably, in order to limit the insertion rod by the clamping plate, the movable plate is located in the rectangular groove on the top surface of the rectangular plate, and a clamping plate is installed on one end of the movable plate, and the clamping plate is in conflict with the insertion rod.

[0013] Preferably, in order to rotate the first driving gear through the driving gear, the driving gear is meshed with the first driving gear.

[0014] The beneficial effects of the utility model are:

[0015] The utility model is provided with a linkage premixing component and a positioning component. When the TPU raw material is placed in the reactor body, the raw material can be more evenly stirred through two stirring rods rotating in opposite directions. At this time, the user can place the unmixed raw material into the premixing barrel on the linkage premixing component for premixing, thereby improving the subsequent mixing processing efficiency and having strong practicality. Under the action of the positioning component, the linkage premixing component can be positioned, making the linkage premixing component convenient and quick to install and remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the kettle cover in the utility model.

[0018] Figure 3 It is a structural schematic diagram of the positioning component in the utility model.

[0019] Figure 4 It is a schematic diagram of the installation of the stirring rod in the utility model.

[0020] Figure 5 It is a schematic diagram of the structure of the premixing barrel in the utility model.

[0021] Figure 6 It is a schematic diagram of the installation of the mixing rod in the utility model.

[0022] Explanation of the accompanying drawings: In the figure: 1, reactor body; 2, supporting legs; 3, reactor cover; 4, first drive gear; 5, second drive gear; 6, stirring rod; 7, bracket; 8, drive motor; 9, driving gear; 10, linkage rod; 11, linkage gear; 12, rectangular rod; 13, linkage pre-mixing assembly; 1301, plug rod; 1302, pre-mixing barrel; 1303, mixing rod; 1304, mixing gear; 14, positioning assembly; 1401, side rod; 1402, rectangular plate; 1403, bidirectional screw rod; 1404, positioning motor; 1405, moving plate; 1406, clamping plate. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] like Figure 1-Figure 6As shown, this embodiment provides a multi-stage stirring reactor for TPU production, including a reactor body 1 and support legs 2 installed in a circular array on the outer side wall of the reactor body 1, the top of the reactor body 1 is connected to a reactor cover 3, the top of the reactor cover 3 is rotatably connected to a first driving gear 4 and a second driving gear 5 from left to right, the bottom of the first driving gear 4 and the bottom of the second driving gear 5 are both connected to a stirring rod 6, the top of the reactor cover 3 is connected to a driving motor 8 through a bracket 7, the output shaft of the driving motor 8 is connected to a driving gear 9, the top of the first driving gear 4 is connected to a linkage rod 10, the top of the linkage rod 10 is installed with a linkage gear 11, the top of the reactor cover 3 is symmetrically connected to a rectangular rod 12 with a groove on the top, a linkage pre-mixing component 13 is provided on the rectangular rod 12, and a positioning component 14 is connected to the rectangular rod 12, and the linkage pre-mixing component 13 can be fixed by the positioning component 14.

[0025] The driving gear 9 meshes with the first driving gear 4 , and the first driving gear 4 meshes with the second driving gear 5 . The stirring rods 6 are located in the reactor body 1 . Driven by the driving gear 9 , the two stirring rods 6 can rotate to mix and stir the raw materials.

[0026] The linkage premixing assembly 13 includes an insertion rod 1301 arranged in a groove at the top of the rectangular rod 12, and a premixing barrel 1302 is connected to the outer wall of one end of the insertion rod 1301. A mixing rod 1303 is rotatably installed in the premixing barrel 1302, and one end of the mixing rod 1303 extends to the outside of the premixing barrel 1302. A mixing gear 1304 is connected to one end of the mixing rod 1303, and the mixing gear 1304 is meshed with the linkage gear 11. The mixing gear 1304 and the mixing rod 1303 are integrated, so when the mixing gear 1304 rotates, the mixing rod 1303 can be driven to rotate, and after the mixing rod 1303 rotates, the raw materials in the premixing barrel 1302 can be premixed.

[0027] The positioning assembly 14 includes a side rod 1401 installed on the outer wall of the rectangular rod 12, a rectangular plate 1402 with a rectangular groove on the top surface is fixedly installed on one end of the side rod 1401, a bidirectional screw rod 1403 is rotatably connected in the rectangular groove on the top surface of the rectangular plate 1402, a positioning motor 1404 is installed on the outer wall of the rectangular plate 1402, the output shaft of the positioning motor 1404 is connected to one end of the bidirectional screw rod 1403, and both ends of the bidirectional screw rod 1403 are threadedly connected with a moving plate 1405, the moving plate 1405 is located in the rectangular groove on the top surface of the rectangular plate 1402, and the moving plate 1405 is connected to the moving plate 1405. A clamping plate 1406 is installed on one end of 405, and the clamping plate 1406 conflicts with the insertion rod 1301. When the pre-mixing barrel 1302 needs to be disassembled, the user can make the positioning motor 1404 work and drive the bidirectional screw rod 1403 to rotate. At this time, the bidirectional screw rod 1403 can drive the movable plate 1405 and the clamping plate 1406 to move. When the clamping plate 1406 is no longer in contact with the insertion rod 1301, the limit on the insertion plate can be released. Thereafter, the user can pull the pre-mixing barrel 1302 upward to remove it, and the above-mentioned reverse operation steps can be used when installing the pre-mixing barrel 1302.

[0028] When the utility model is used, when mixing and stirring the TPU raw materials, the user can first put the raw materials into the reactor body 1, and the reactor body 1 is respectively provided with a feed pipe and a discharge pipe, which are not marked in the figure. When the TPU raw materials are placed in the reactor body 1, the user can make the driving motor 8 work and drive the driving gear 9 to rotate. Since the driving gear 9 is meshed with the first driving gear 4, the first driving gear 4 can drive the second driving gear 5 to rotate, and then the two stirring rods 6 can be rotated. Since the rotation directions of the first driving gear 4 and the second driving gear 5 are opposite, the rotation directions of the two stirring rods 6 are also opposite. The raw materials can be mixed and stirred by the two stirring rods 6 with opposite movement directions. For more uniform stirring, the user can then place the unmixed raw materials into the premixing barrel 1302. Since the first driving gear 4 can drive the linkage rod 10 and the linkage gear 11 to engage when rotating, and the linkage gear 11 can drive the mixing gear 1304 and the mixing rod 1303 to rotate after rotating, the raw materials in the premixing barrel 1302 can be premixed through the mixing rod 1303, which improves the subsequent mixing processing efficiency and has strong practicality. In addition, the diameter of the linkage gear 11 is smaller than the diameter of the mixing gear 1304, so the rotation of the linkage gear 11 will cause the rotation speed of the mixing gear 1304 to be relatively slow. At this time, the rotation speed of the mixing rod 1303 is also relatively slow, because the rotation speed needs to be relatively reduced when the raw materials are premixed.

[0029] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A multi-stage stirred reactor for TPU production, comprising a reactor body (1) and support legs (2) mounted in a circular array on the outer side wall of the reactor body (1), characterized in that: The top of the reactor body (1) is connected to a reactor cover (3), and the top of the reactor cover (3) is rotatably connected to a first driving gear (4) and a second driving gear (5) in sequence from left to right. The bottoms of the first driving gear (4) and the second driving gear (5) are both connected to stirring rods (6). The top of the reactor cover (3) is connected to a driving motor (8) via a bracket (7), and an active gear (9) is connected to the output shaft of the driving motor (8). The top of the first driving gear (4) is connected to a linkage rod (10), and a linkage gear (11) is installed on the top of the linkage rod (10). The top of the reactor cover (3) is symmetrically connected to a rectangular rod (12) having a groove on the top, and a linkage pre-mixing assembly (13) is arranged on the rectangular rod (12), and a positioning assembly (14) is connected to the rectangular rod (12).

2. The multi-stage stirred reactor for TPU production according to claim 1, characterized in that: The first driving gear (4) is meshed with the second driving gear (5), and the stirring rod (6) is located inside the reactor body (1).

3. The multi-stage stirred reactor for TPU production according to claim 1, characterized in that: The linkage premixing assembly (13) comprises an insertion rod (1301) arranged in a groove at the top of the rectangular rod (12); a premixing barrel (1302) is connected to the outer wall of one end of the insertion rod (1301); and a mixing rod (1303) is rotatably mounted in the premixing barrel (1302).

4. The multi-stage stirred reactor for TPU production according to claim 3, characterized in that: One end of the mixing rod (1303) extends to the outside of the pre-mixing barrel (1302), and a mixing gear (1304) is connected to one end of the mixing rod (1303), and the mixing gear (1304) is meshed with the linkage gear (11).

5. The multi-stage stirred reactor for TPU production according to claim 3, characterized in that: The positioning assembly (14) comprises a side rod (1401) mounted on the outer wall of the rectangular rod (12); a rectangular plate (1402) having a rectangular groove on the top surface is fixedly mounted on one end of the side rod (1401); a bidirectional screw rod (1403) is rotatably connected in the rectangular groove on the top surface of the rectangular plate (1402).

6. The multi-stage stirred reactor for TPU production according to claim 5, characterized in that: A positioning motor (1404) is installed on the outer wall of the rectangular plate (1402), and the output shaft of the positioning motor (1404) is connected to one end of the bidirectional screw rod (1403), and both ends of the bidirectional screw rod (1403) are threadedly connected to a moving plate (1405).

7. The multi-stage stirred reactor for TPU production according to claim 6, characterized in that: The movable plate (1405) is located in a rectangular groove on the top surface of the rectangular plate (1402), and a clamping plate (1406) is installed on one end of the movable plate (1405), and the clamping plate (1406) is in conflict with the insertion rod (1301).

8. The multi-stage stirred reactor for TPU production according to claim 1, characterized in that: The driving gear (9) is meshed with the first driving gear (4).

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