Polypropylene mixing reaction kettle

Abstract

The utility model discloses a polypropylene mixing reaction kettle which comprises a reaction kettle body, a communicating pipe is communicated with the inner bottom of the reaction kettle body in a penetrating mode, a feeding port is formed in one side of the outer side wall of the communicating pipe in a penetrating mode, a mounting frame is fixedly connected to the upper end of the reaction kettle body, and a driving device is fixedly mounted at the upper end of the mounting frame. The output end of the driving device is in transmission connection with a rotating shaft, and one end of the rotating shaft is fixedly connected with a feeding threaded blade. A polypropylene raw material in a reaction kettle body enters a communicating pipe through a feeding port, a driving device is started, so that a feeding threaded blade rotates in the communicating pipe, the polypropylene raw material at the bottom of the reaction kettle body is transported, a driving bevel gear drives a first driven bevel gear to rotate, and a stirring frame stirs the transported raw material; the stirring frame is matched with the feeding threaded blade, so that stirring dead angles are effectively avoided, and the quality of polypropylene produced by the reaction kettle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polypropylene production equipment, in particular to a polypropylene mixing reactor. Background Art

[0002] Polypropylene, abbreviated as PP, is a polymer formed by the addition polymerization of propylene. It is a white waxy material with a transparent and light appearance. Polypropylene is a thermoplastic synthetic resin with excellent properties, a colorless translucent thermoplastic lightweight general-purpose plastic, having chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, and good high-abrasion processing properties, etc. To ensure that polypropylene monomers can polymerize efficiently and stably, it needs to be carried out in a reaction kettle.

[0003] In the prior art, as disclosed in Chinese Patent CN216538441U, a reaction kettle for producing polypropylene PP particle coating material capable of efficient mixing includes a reaction kettle body, a feed pipe fixedly connected to the upper surface of the reaction kettle body, a discharge pipe fixedly connected to the bottom surface of the reaction kettle body, and a heater installed on the inner wall of the reaction kettle body.

[0004] However, in the above patent, although the cooperation between the motor, the first bevel gear, the second rotating shaft, the second bevel gear, the third bevel gear, and the first rotating shaft makes the materials in the reaction kettle body mix more evenly, the bottom of the stirring frame does not contact the bottom of the reaction kettle, and the materials at the bottom of the reaction kettle cannot be stirred, resulting in a stirring dead angle, thus affecting the quality of polypropylene produced by the reaction kettle. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a polypropylene mixing reactor to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A polypropylene mixing reactor includes a reaction kettle body. A communicating pipe penetrates and communicates with the inner bottom of the reaction kettle body. One side of the outer wall of the communicating pipe is provided with a feed port. The upper end of the reaction kettle body is fixedly connected with a mounting frame. A driving device is fixedly installed at the upper end of the mounting frame. The output end of the driving device is connected with a rotating shaft in a transmission manner. One end of the rotating shaft is fixedly connected with an upper feeding thread blade. The upper feeding thread blade is located inside the communicating pipe. One side of the outer wall of the rotating shaft is rotatably connected with a stirring frame.

[0007] As a further preferred embodiment of this technical solution, a driven bevel gear two is rotatably connected to one side of the inner wall of the mounting frame. A driving bevel gear is rotatably connected to the inner top of the mounting frame. One side of the driven bevel gear two meshes with one side of the driving bevel gear. The other side of the driven bevel gear two meshes with a driven bevel gear one. One side of the driven bevel gear one is fixedly connected with one side of the stirring frame.

[0008] As a further preference of the present technical solution, one end of the stirring frame is fixedly connected with a connecting frame, one end of the connecting frame is fixedly connected with a rotating ring, one side of the outer side wall of the communicating pipe is fixedly connected with a supporting ring, and the inner wall of the rotating ring is rotatably connected with one side of the inner wall of the supporting ring.

[0009] As a further preference of the present technical solution, the lower end of the reaction kettle body is fixedly connected with a reinforcing rib, and one side of the reinforcing rib is fixedly connected with one side of the outer side wall of the communicating pipe.

[0010] As a further preference of the present technical solution, a sliding groove is provided on one side of the stirring frame, a cleaning scraper is slidably connected to the inner wall of the sliding groove, a return spring is fixedly connected to one side of the inner wall of the sliding groove, and one end of the return spring is fixedly connected with one side of the cleaning scraper.

[0011] As a further preference of the present technical solution, a heating device is fixedly installed on the inner wall of the reaction kettle body, an inner tank is fixedly connected inside the reaction kettle body, and the outer side wall of the inner tank is attached to one side of the heating device.

[0012] As a further preference of the present technical solution, a feed pipe is fixedly communicated with the upper end of the reaction kettle body, and a valve is fixedly installed on one side of the communicating pipe.

[0013] The utility model provides a polypropylene mixing reaction kettle, which has the following beneficial effects:

[0014] (1) Through the feed port of the utility model, the polypropylene raw material in the reaction kettle body enters the communicating pipe. The driving device is started, so that the feeding screw blade rotates in the communicating pipe, transports the polypropylene raw material at the bottom of the reaction kettle body up, the driving bevel gear drives the driven bevel gear one to rotate, and the stirring frame stirs the transported raw material. The mutual cooperation of the stirring frame and the feeding screw blade effectively avoids the stirring dead angle and improves the quality of polypropylene produced by the reaction kettle.

[0015] (2) Through the structural design of the cleaning scraper of the utility model, when discharging the reacted polypropylene, the stirring frame is rotated to make the cleaning scraper scrape the raw material on the inner wall of the inner tank, avoiding part of the raw material adhering to the inner wall of the inner tank, resulting in waste of polypropylene. With the auxiliary action of the return spring, the cleaning scraper can be tightly attached to the inner wall of the inner tank, avoiding wear of the cleaning scraper during long-term use, resulting in a gap between the cleaning scraper and the inner tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2Schematic diagram of the internal structure of the reactor body of the present utility model;

[0018] Figure 3 is Figure 2 Partial enlarged schematic diagram of area A in;

[0019] Figure 4 Schematic diagram of the connection relationship between the stirring frame and the feeding screw blade in the present utility model;

[0020] In the figure: 1. Reactor body; 2. Feed pipe; 3. Connecting pipe; 4. Valve; 5. Mounting frame; 6. Driving device; 7. Inner liner; 8. Heating device; 9. First driven bevel gear; 10. Driving bevel gear; 11. Second driven bevel gear; 12. Stirring frame; 13. Feeding screw blade; 14. Rotating shaft; 15. Connecting frame; 16. Reinforcing rib; 17. Rotating ring; 18. Support ring; 19. Feed inlet; 20. Cleaning scraper; 21. Return spring; 22. Sliding groove. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0022] The present utility model provides a technical solution: As Figure 1 - Figure 4 shown, in this embodiment, a polypropylene mixing reactor includes a reactor body 1. A connecting pipe 3 penetrates through and communicates with the inner bottom of the reactor body 1. One side of the outer side wall of the connecting pipe 3 is provided with a feed inlet 19. The upper end of the reactor body 1 is fixedly connected with a mounting frame 5. The upper end of the mounting frame 5 is fixedly installed with a driving device 6. The output end of the driving device 6 is connected with a rotating shaft 14 in a transmission manner. One end of the rotating shaft 14 is fixedly connected with a feeding screw blade 13. The feeding screw blade 13 is located inside the connecting pipe 3. One side of the outer side wall of the rotating shaft 14 is rotatably connected with a stirring frame 12. Through the feed inlet 19, the polypropylene raw material in the reactor body 1 enters the connecting pipe 3. The driving device 6 is turned on, so that the feeding screw blade 13 rotates in the connecting pipe 3, transporting the polypropylene raw material at the bottom of the reactor body 1 upwards. The driving bevel gear 10 drives the first driven bevel gear 9 to rotate, and the stirring frame 12 stirs the transported raw material. The mutual cooperation between the stirring frame 12 and the feeding screw blade 13 effectively avoids stirring dead corners and improves the quality of polypropylene produced by the reactor.

[0023] As Figure 1 , Figure 2 and Figure 4As shown, on one side of the inner wall of the mounting bracket 5, a driven bevel gear II 11 is rotatably connected. At the top inside the mounting bracket 5, a driving bevel gear 10 is rotatably connected. One side of the driven bevel gear II 11 meshes with one side of the driving bevel gear 10. On the other side of the driven bevel gear II 11, a driven bevel gear I 9 is meshed. One side of the driven bevel gear I 9 is fixedly connected to one side of the stirring frame 12. Through the cooperation among the driving bevel gear 10, the driven bevel gear II 11 and the driven bevel gear I 9, while the feeding screw blade 13 rotates, the stirring frame 12 can be driven to stir the raw materials in the reaction kettle body 1.

[0024] As Figure 2 and Figure 3 shown, one end of the stirring frame 12 is fixedly connected to a connecting frame 15. One end of the connecting frame 15 is fixedly connected to a rotating ring 17. On one side of the outer sidewall of the communicating pipe 3, a support ring 18 is fixedly connected. The inner wall of the rotating ring 17 is rotatably connected to one side of the inner wall of the support ring 18. Through the structural design of the support ring 18 and the rotating ring 17, the stability of the rotation of the stirring frame 12 can be improved.

[0025] As Figure 2 and Figure 3 shown, at the lower end of the reaction kettle body 1, a reinforcing rib 16 is fixedly connected. One side of the reinforcing rib 16 is fixedly connected to one side of the outer sidewall of the communicating pipe 3. The reinforcing rib 16 is used to strengthen the connection between the communicating pipe 3 and the reaction kettle body 1.

[0026] As Figure 2 and Figure 4 shown, on one side of the stirring frame 12, a sliding groove 22 is provided. Inside the inner wall of the sliding groove 22, a cleaning scraper 20 is slidably connected. On one side of the inner wall of the sliding groove 22, a return spring 21 is fixedly connected. One end of the return spring 21 is fixedly connected to one side of the cleaning scraper 20. Through the structural design of the cleaning scraper 20, when discharging the completed polypropylene reaction, the stirring frame 12 is rotated to make the cleaning scraper 20 scrape off the raw materials on the inner wall of the inner tank 7, preventing some raw materials from adhering to the inner wall of the inner tank 7 and causing waste of polypropylene.

[0027] As Figure 2 shown, a heating device 8 is fixedly installed on the inner wall of the reaction kettle body 1. Inside the reaction kettle body 1, an inner tank 7 is fixedly connected. The outer sidewall of the inner tank 7 is in contact with one side of the heating device 8. Through the heating device 8, the polypropylene reaction in the reaction kettle body 1 can be quickly accelerated, improving the production efficiency.

[0028] As Figure 1 and Figure 2 shown, at the upper end of the reaction kettle body 1, a feed pipe 2 is fixedly communicated. On one side of the communicating pipe 3, a valve 4 is fixedly installed. Through the valve 4, polypropylene leakage and waste can be prevented.

[0029] The utility model provides a polypropylene mixing reactor, and the specific working principle is as follows:

[0030] When using the reactor to produce polypropylene, first add the raw materials into the reactor body 1 through the feed pipe 2, turn on the heating device 8 to heat the raw materials. At the same time, turn on the driving device 6 to make the feeding screw blade 13 rotate in the connecting pipe 3. The polypropylene raw materials enter the reactor body 1 through the feed port 19, transport the polypropylene raw materials at the bottom of the reactor body 1 upwards. The driving bevel gear 10 drives the driven bevel gear 9 to rotate, and the stirring frame 12 stirs the transported raw materials. When the reaction is completed, rotate the valve 4 to discharge the polypropylene. At the same time, reverse the driving device 6, and the polypropylene is quickly discharged through the feeding screw blade 13. When the stirring frame 12 rotates, the cleaning scraper 20 scrapes the raw materials on the inner wall of the inner tank 7, so that the production is completed.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A polypropylene mixing reactor, comprising a reactor body (1), characterized in that: A connecting pipe (3) is passed through the bottom of the interior of the reactor body (1), and a feed port (19) is passed through one side of the outer wall of the connecting pipe (3). A mounting frame (5) is fixedly connected to the upper end of the reactor body (1), and a driving device (6) is fixedly installed on the upper end of the mounting frame (5). The output end of the driving device (6) is connected to a rotating shaft (14), and one end of the rotating shaft (14) is fixedly connected to a feeding thread blade (13), and the feeding thread blade (13) is located inside the connecting pipe (3). A stirring frame (12) is rotatably connected to one side of the outer wall of the rotating shaft (14).

2. A polypropylene mixing reactor according to claim 1, characterized in that: A driven bevel gear 2 (11) is rotatably connected to one side of the inner wall of the mounting frame (5), a driving bevel gear (10) is rotatably connected to the inner top of the mounting frame (5), one side of the driven bevel gear 2 (11) is meshed with one side of the driving bevel gear (10), the other side of the driven bevel gear 2 (11) is meshed with a driven bevel gear 1 (9), and one side of the driven bevel gear 1 (9) is fixedly connected to one side of the stirring frame (12).

3. A polypropylene mixing reactor according to claim 1, characterized in that: One end of the stirring frame (12) is fixedly connected to a connecting frame (15), one end of the connecting frame (15) is fixedly connected to a rotating ring (17), one side of the outer wall of the connecting pipe (3) is fixedly connected to a supporting ring (18), and the inner wall of the rotating ring (17) is rotatably connected to one side of the inner wall of the supporting ring (18).

4. A polypropylene mixing reactor according to claim 1, characterized in that: A reinforcing rib (16) is fixedly connected to the lower end of the reactor body (1), and one side of the reinforcing rib (16) is fixedly connected to one side of the outer wall of the connecting pipe (3).

5. A polypropylene mixing reactor according to claim 1, characterized in that: A sliding groove (22) is provided on one side of the stirring frame (12); a cleaning scraper (20) is slidably connected to the inner wall of the sliding groove (22); a return spring (21) is fixedly connected to one side of the inner wall of the sliding groove (22); one end of the return spring (21) is fixedly connected to one side of the cleaning scraper (20).

6. A polypropylene mixing reactor according to claim 1, characterized in that: A heating device (8) is fixedly mounted on the inner wall of the reactor body (1), an inner liner (7) is fixedly connected to the interior of the reactor body (1), and an outer wall of the inner liner (7) is in contact with one side of the heating device (8).

7. A polypropylene mixing reactor according to claim 1, characterized in that: The upper end of the reactor body (1) is fixedly connected to a feed pipe (2), and a valve (4) is fixedly installed on one side of the connecting pipe (3).

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