Horizontal stirring device for polypropylene preparation

Abstract

The embodiment of the utility model provides a horizontal stirring device for polypropylene preparation, and relates to the technical field of polypropylene preparation. The horizontal stirring device for polypropylene preparation comprises a reactor and a stirring assembly, one end of the stirring assembly is connected with a driving assembly, the stirring assembly comprises a first pipeline and a second pipeline, a closing opening is formed in one end of the first pipeline, a first rotating rod is arranged in the first pipeline, and the first rotating rod comprises a first feeding part; raw materials and auxiliaries of the raw materials are injected into the first pipeline through the feeding pipe, the raw materials start to be mixed after reaching the stirring part, and when one end of the first pipeline is provided with the closing opening, the raw materials move to the closing opening to enable pressure to be increased; the stirring part and the first feeding part move in the axial directions of the stirring part and the first feeding part, and in the process, part of the raw materials in the first pipeline can flow back to be stirred again, so that the stirring effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of polypropylene preparation, in particular to a horizontal stirring device for polypropylene preparation. Background Art

[0002] Polypropylene (PP), as one of the five most widely used general-purpose plastics with the largest output, is one of the new materials industries that my country focuses on developing. It is widely used in the fields of automobiles, packaging, textiles, medicine and health due to its low density, chemical corrosion resistance, and excellent optical and mechanical properties. In recent years, my country has accelerated the transformation and upgrading of the plastic processing industry, promoted the improvement of the industry's independent innovation capabilities, and the PP production capacity at home and abroad is in a rapid growth trend. However, with the increasing demand for high-performance polypropylene products such as high-end pipe materials, automobiles, home appliances, medical, high melt flow rate transparent films and functional materials at home and abroad, the development of high-end PP special materials in China is still far behind that in foreign countries, resulting in products that are difficult to meet the needs of end users. Although the PP output is large, it is structurally insufficient.

[0003] In the prior art (application number CN202321530497.9, patent name is a Chinese invention patent application for a polypropylene preparation mixing and stirring blade structure.), the blade body cooperates with the socket and is located in the middle of the socket. The fixing rod passes through the socket and cooperates with the socket. Through the setting of the socket, the socket is connected to the mounting block and forms a whole. The socket and the blade body can rotate the blade body and insert the fixing rod into the socket and the blade body to adjust the angle of the blade body. In the process of realizing the technical solution, the inventor found that there are at least the following problems in the prior art:

[0004] Since bulk polymerization is usually adopted in the preparation process of polypropylene, this preparation method usually involves adding a variety of additives. The distribution of the additives in the polymerization liquid will ultimately determine the quality of the polypropylene product. In the above-mentioned prior art, the blade body has a fixed shape and adopts a vertical stirring method, which will cause the additives added to the polymerization liquid to be affected by gravity and centrifugal force during the stirring process, so that they are mostly distributed on the periphery of the polymerization liquid, resulting in the quality of the final product being affected. Utility Model Content

[0005] The utility model aims to provide a horizontal stirring device for preparing polypropylene, which can avoid the problem that the additives added into the polymerization liquid are affected by gravity and centrifugal force during the stirring process, so that they are mostly distributed on the periphery of the polymerization liquid, resulting in the quality of the final product being affected.

[0006] The utility model provides a horizontal stirring device for preparing polypropylene, comprising a reactor, wherein a stirring assembly for mixing polypropylene raw materials is arranged inside the reactor, and one end of the stirring assembly is connected to a driving assembly for driving the stirring assembly to operate;

[0007] The stirring assembly includes a first pipe and a second pipe connected to the first pipe, one end of the first pipe is provided with a closing end, one side of the first pipe is fixedly connected to a feeding pipe for feeding raw materials, a first rotating rod is rotatably arranged inside the first pipe, and a second rotating rod connected to the first rotating rod is rotatably arranged inside the second pipe;

[0008] The first rotating rod comprises a first feeding part for conveying raw materials, one end of the first feeding part is slidably connected to a stirring part for mixing the raw materials, and one end of the stirring part is connected to a second feeding part for feeding the raw materials into the second pipe.

[0009] In a specific embodiment, a first spiral blade is spirally wound around the outer periphery of the first feeding portion, a plurality of groups of mixing plates are arranged at equal intervals along the circumferential direction of the axis of one end of the first feeding portion, an inclined plate matching the mixing plate is arranged on the surface of the stirring portion, a plurality of groups of first stirring blades are arranged on the surface of the stirring portion, a second stirring blade whose number and spacing are equal to those of the mixing plate is fixedly arranged at one end of the stirring portion, a connecting port is also opened at one end of the stirring portion, and a second spiral blade whose area is larger than the first spiral blade is arranged on the second feeding portion.

[0010] In a specific embodiment, a slide is provided at one end of the first feeding part, a guide groove is provided on the inner wall of the slide, a spring is installed inside the slide, a connecting rod located inside the slide is provided at one end of the stirring part, and an insert matching the guide groove is fixedly provided on the outer side of the connecting rod.

[0011] In a specific embodiment, a stabilizing member is provided on the first pipe and the second pipe, and the stabilizing member includes a fixing rod fixed on the inner wall of the reactor, one end of the fixing rod is fixedly provided with a collar sleeved on the outer wall of the first pipe and the second pipe, and an anti-slip surface is fixedly provided inside the collar.

[0012] In a specific embodiment, a sealing ring is fixedly provided at one end of the first feeding portion and the stirring portion.

[0013] In a specific embodiment, a spiral stirring blade is arranged on the outer side of the second rotating rod, a second reinforcing rod fixedly connected to the surface of the second rotating rod is fixedly arranged on the spiral stirring blade, and a third spiral blade is also spirally wound on the surface of the second rotating rod.

[0014] In a specific embodiment, a reinforcing sheet is fixedly provided at one end of the second rotating rod, a first reinforcing rod connected to the second rotating rod is fixedly provided at one end of the reinforcing sheet, and the first reinforcing rod is fixedly connected to the spiral stirring blade.

[0015] In a specific embodiment, the driving assembly includes a motor, and the driving assembly includes a motor for driving the first rotating rod to rotate, a mounting seat is installed at one end of the motor, and a reducer connected to the motor and the first rotating rod is installed on one side of the mounting seat.

[0016] In a specific implementation manner, a connecting seat is further provided at one end of the reducer, a mounting port is provided in the connecting seat, and the mounting port is connected to the feed pipe.

[0017] In a specific embodiment, a base frame is fixedly provided at the bottom end of the reactor, a long platform is threadedly connected to the base frame, and a plurality of groups of hydraulic support feet are provided on the outer side of the long platform.

[0018] The beneficial effects of the present application are as follows: the raw materials and auxiliary agents required in the polypropylene preparation process are injected into the first pipeline through the feed pipe, and the driving component is started to rotate the first rotating rod located inside the first pipeline, and the rotating first rotating rod drives the first feeding part to make the raw material move linearly in the first pipeline until it moves to the stirring part. The first feeding part can drive the stirring part and the second feeding part to rotate synchronously while rotating, and the raw materials begin to be mixed after reaching the stirring part. When the raw materials that have been preliminarily mixed reach the position of the second feeding part, due to the closing end of the first pipeline and the structural difference between the second feeding part and the first feeding part, the pressure at the closing end of the first pipeline increases, compression occurs between the stirring part and the first feeding part, and the stirring part and the first feeding part are displaced along the axis direction of the two parts. During the process, part of the raw material located inside the first pipeline will flow back and be stirred again, so that the stirring effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the stirring assembly structure of an embodiment of the utility model;

[0022] Figure 3 A three-dimensional schematic diagram of a half-section structure of a stirring assembly according to an embodiment of the utility model;

[0023] Figure 4 It is a three-dimensional schematic diagram of the structure of the first feeding part of an embodiment of the utility model;

[0024] Figure 5 It is a three-dimensional schematic diagram of the stirring part structure of an embodiment of the utility model;

[0025] Figure 6 This is a three-dimensional schematic diagram of the structure of the stabilizing member of an embodiment of the utility model;

[0026] Figure 7 It is a three-dimensional schematic diagram of the second rotating rod structure of an embodiment of the utility model;

[0027] Figure 8 It is a three-dimensional schematic diagram of the driving component structure of an embodiment of the utility model.

[0028] Icons: 1-reactor; 11-base frame; 2-stirring assembly; 21-first pipeline; 211-closing end; 22-second pipeline; 23-stabilizing member; 231-fixing rod; 232-ring; 233-anti-slip surface; 24-feeding pipe; 25-first rotating rod; 251-first feeding part; 2511-first spiral blade; 2512-mixing plate; 2513-slideway; 2514-guide groove; 252-stirring part; 2521-connecting rod; 2522-insertion strip; 2523-inclined plate; 2524 -first stirring blade; 2525-second stirring blade; 2526-connecting port; 253-second feeding part; 2531-second spiral blade; 26-second rotating rod; 261-reinforcement plate; 2611-first reinforcement rod; 262-spiral stirring blade; 2621-second reinforcement rod; 263-third spiral blade; 27-sealing ring; 28-spring; 3-drive assembly; 31-motor; 32-mounting seat; 33-reducer; 34-connecting seat; 341-mounting port; 4-long table; 41-hydraulic support foot. DETAILED DESCRIPTION

[0029] Since the vertical stirring method is adopted in the preparation process of polypropylene, the additives added into the polymer solution will be affected by gravity and centrifugal force during the stirring process, so that they are mostly distributed on the periphery of the polymer solution, resulting in the quality of the final product being affected. Therefore, the inventor provides a horizontal stirring device for preparing polypropylene after research. In the preparation process of polypropylene, the raw material can be first fed into the first pipe, and then stirred by the first feeding part and the stirring part inside the first pipe. The back and forth movement between the first feeding part and the stirring part, as well as the paddles with different shapes on the surfaces of the stirring part and the first feeding part can improve the stirring effect on the polypropylene raw material, thereby solving the above-mentioned defects.

[0030] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0031] Please refer to Figures 1 to 3The embodiment of the utility model provides a horizontal stirring device for preparing polypropylene, comprising a reactor 1, wherein a stirring component 2 for mixing polypropylene raw materials is provided inside the reactor 1, and a driving component 3 for driving the stirring component 2 is connected to one end thereof;

[0032] The stirring assembly 2 includes a first pipe 21 and a second pipe 22 connected to the first pipe 21. One end of the first pipe 21 is provided with a closing end 211. One side of the first pipe 21 is fixedly connected to a feeding pipe 24 for feeding raw materials. A first rotating rod 25 is rotatably arranged inside the first pipe 21. A second rotating rod 26 connected to the first rotating rod 25 is rotatably arranged inside the second pipe 22.

[0033] The first rotating rod 25 includes a first feeding part 251 for conveying raw materials, one end of the first feeding part 251 is slidably connected to a stirring part 252 for mixing the raw materials, and one end of the stirring part 252 is connected to a second feeding part 253 for feeding the raw materials into the second pipe 22;

[0034] In this embodiment: the raw materials and the additives required in the polypropylene preparation process are injected into the first pipe 21 through the feed pipe 24, and the driving assembly 3 is started to rotate the first rotating rod 25 located inside the first pipe 21. The rotating first rotating rod 25 drives the first feeding part 251 to make the raw materials move linearly in the first pipe 21 until they move to the stirring part 252. The first feeding part 251 can drive the stirring part 252 and the second feeding part 253 to rotate synchronously while rotating. When the raw materials reach the stirring part 252, mixing begins;

[0035] When the raw materials after preliminary mixing reach the position of the second feeding part 253, due to the fact that one end of the first pipe 21 is provided with a closing port 211 and the structural difference between the second feeding part 253 and the first feeding part 251, the pressure at the closing port 211 of the first pipe 21 increases, and compression occurs between the stirring part 252 and the first feeding part 251, so that the stirring part 252 and the first feeding part 251 are displaced along the axis direction thereof. During the process, part of the raw materials in the first pipe 21 will flow back and be stirred again, so that the stirring effect is better.

[0036] As a technical optimization solution of the utility model, it should be noted that an existing control device such as a solenoid valve can be added to one end of the feed pipe 24 to adjust the raw material flow inside the first pipeline 21, thereby adjusting the moving stroke between the first feeding part 251 and the stirring part 252, and then separately controlling the quality requirements of different products. There are two reactors 1, and the two reactors 1 are connected in series.

[0037] Please refer to Figure 4 and Figure 5, the first feeding part 251 is spirally wound with a first spiral blade 2511 on the periphery, a plurality of groups of mixing plates 2512 are arranged at equal intervals along the circumferential direction of the axis at one end of the first feeding part 251, an inclined plate 2523 matching the mixing plate 2512 is arranged on the surface of the stirring part 252, a plurality of groups of first stirring blades 2524 are arranged on the surface of the stirring part 252, a second stirring blade 2525 whose number and spacing are equal to those of the mixing plate 2512 is fixedly arranged at one end of the stirring part 252, a connecting port 2526 is also opened at one end of the stirring part 252, and a second spiral blade 2531 whose area is larger than the first spiral blade 2511 is arranged on the second feeding part 253;

[0038] In this embodiment: the first spiral blade 2511 on the periphery of the first feeding part 251 can transport the raw materials in a straight line, the mixing plate 2512 at one end of the first feeding part 251 can perform the first step of mixing on the raw materials entering the first pipe 21, and the inclined plate 2523 on the surface of the stirring part 252 can be combined with the mixing plate 2512 when the stirring part 252 is close to the first feeding part 251, so as to increase the mixing area at a single place and improve the mixing effect. The number of the multiple groups of first stirring blades 2524 on the surface of the stirring part 252 and the angles between the blades are different from those of the mixing plate 2512. This design can solve different requirements for raw material mixing. In view of the problem that the radial mixing of particles is uneven and the axial back mixing amount is large, which is not conducive to product uniformity, different gate paddle structures are combined and used to improve the radial mixing and axial diffusion effects of the materials during the stirring process, thereby improving the material stirring efficiency, and then improving the long-term operation capacity and product quality of the reactor 1.

[0039] As a technical optimization solution of the utility model, the stirring part 252 is provided with multiple groups, and the second stirring plate 2525 at one end of the stirring part 252 has the same structure as the mixing plate 2512, so that the stirring part 252 of the upper group can be combined with the inclined plate 2523 on the stirring part 252 of the next group, and the second spiral blade 2531 on the second feeding part 253 has a larger area than the first spiral blade 2511 in order to further compress the spatial volume inside the closing end 211 of the first pipe 21, thereby increasing the extrusion of the raw materials there, so that the stirring part 252 can smoothly approach the first feeding part 251.

[0040] Please refer to Figure 4 and Figure 5 A slideway 2513 is provided at one end of the first feeding part 251, a guide groove 2514 is provided on the inner wall of the slideway 2513, a spring 28 is also installed inside the slideway 2513, a connecting rod 2521 located inside the slideway 2513 is provided at one end of the stirring part 252, and an insert 2522 matching the guide groove 2514 is fixedly provided on the outer side of the connecting rod 2521;

[0041] In this embodiment: when the stirring portion 252 approaches the first feeding portion 251, the connecting rod 2521 at one end of the stirring portion 252 moves linearly on the slideway 2513 at one end of the first feeding portion 251. During the movement, the insert 2522 on the outer side of the connecting rod 2521 moves along the guide groove 2514 in the slideway 2513. The guide groove 2514 can not only guide the stirring portion 252, but also enable the first feeding portion 251 to drive the stirring portion 252 to rotate synchronously during the rotation process. The connecting port 2526 at one end of the stirring portion 252 has the same structure as the slideway 2513 and is used to connect adjacent stirring portions 252.

[0042] As a technical optimization solution of the utility model, when the connecting rod 2521 moves inside the slide 2513, the spring 28 located inside the slide 2513 is compressed. When the pressure of the raw material at the closing end 211 at one end of the first pipe 21 decreases, the spring 28 begins to rebound and pushes the stirring part 252 to reset, thereby switching the stirring state in the first pipe 21. When the volume of the raw material at the closing end 211 increases again, the pressure generated will cause the spring 28 to be compressed again, and the cycle repeats, thereby improving the effect of the raw material being stirred in the first pipe 21.

[0043] Please refer to Figure 6 The first pipe 21 and the second pipe 22 are provided with a stabilizing member 23, the stabilizing member 23 includes a fixing rod 231 fixed to the inner wall of the reactor 1, one end of the fixing rod 231 is fixedly provided with a collar 232 sleeved on the outer wall of the first pipe 21 and the second pipe 22, and the collar 232 is fixedly provided with an anti-slip surface 233 inside;

[0044] In this embodiment: the stabilizing member 23 is used to maintain the stability of the first pipe 21 and the second pipe 22 in the working state, and reduce the shaking of the first pipe 21 and the second pipe 22 during operation, thereby affecting the stirring state of the raw materials in the first pipe 21 and the second pipe 22;

[0045] As a technical optimization solution of the utility model, the fixing rod 231 used by the stabilizing member 23 is made of a hydraulic rod, which can not only change its own length to adapt to the position of the first pipe 21 and the second pipe 22, but also play the function of reducing the force, thereby avoiding the rigid connection between the stabilizing member 23 and the first pipe 21 and the second pipe 22, which causes the first pipe 21 and the second pipe 22 to rupture when the first pipe 21 and the second pipe 22 vibrate violently.

[0046] Please refer to Figure 4 and Figure 5 , a sealing ring 27 is fixedly provided at one end of the first feeding part 251 and the stirring part 252;

[0047] In this embodiment, the sealing ring 27 can prevent the raw materials in the first pipeline 21 from flowing into the slideway 2513 when the first pipeline 21 is working, thereby affecting the movement of the stirring part 252.

[0048] Please refer to Figure 7 The second rotating rod 26 is provided with a spiral stirring blade 262 on the outer side, and a second reinforcing rod 2621 fixedly connected to the surface of the second rotating rod 26 is fixedly provided on the spiral stirring blade 262. The surface of the second rotating rod 26 is also spirally wound with a third spiral blade 263;

[0049] In this embodiment: the edge of the spiral stirring blade 262 is in contact with the inner wall of the second pipe 22, and the auxiliary agent moved to the edge due to the centrifugal force in the raw material after being stirred in the first pipe 21 can be stirred for the second time, so that the raw material and the auxiliary agent can be better integrated;

[0050] As a technical optimization solution of the utility model, the second reinforcement rod 2621 on the spiral stirring blade 262 can enhance the overall structural strength of the spiral stirring blade 262, thereby avoiding the bending of the spiral stirring blade 262 after being subjected to radial force. The third spiral blade 263 located on the surface of the second rotating rod 26 can deliver the finally mixed raw materials to the next process.

[0051] Please refer to Figure 7 A reinforcing sheet 261 is fixedly provided at one end of the second rotating rod 26, a first reinforcing rod 2611 connected to the second rotating rod 26 is fixedly provided at one end of the reinforcing sheet 261, and the first reinforcing rod 2611 is fixedly connected to the spiral stirring sheet 262;

[0052] In this embodiment, the reinforcing piece 261 at one end of the second rotating rod 26 is used to strengthen the force applied to the spiral stirring piece 262 along its axial direction.

[0053] Please refer to Figure 8 The driving assembly 3 includes a motor 31 for driving the first rotating rod 25 to rotate, a mounting seat 32 is mounted on one end of the motor 31, and a reducer 33 connected to the motor 31 and the first rotating rod 25 is mounted on one side of the mounting seat 32;

[0054] In this embodiment: the motor 31 is started to drive the first rotating rod 25 to rotate, and the mounting base 32 at one end of the motor 31 is used to ensure the stability of the motor 31 when it is in operation. The reducer 33 connected to the motor 31 and the first rotating rod 25 can reduce the rotation speed of the first rotating rod 25, thereby increasing the torque of the first rotating rod 25, and then the first rotating rod 25 can effectively stir the relatively viscous raw materials.

[0055] Please refer to Figure 8The reducer 33 is also provided with a connecting seat 34 at one end, and a mounting port 341 is provided in the connecting seat 34, and the mounting port 341 is connected to the feed pipe 24;

[0056] In this embodiment, the connection seat 34 is used to connect the stirring assembly 2 and the driving assembly 3 , and a material tank can be loaded on the connection seat 34 to achieve the effect of continuously feeding the raw materials into the stirring assembly 2 through the feeding pipe 24 .

[0057] Please refer to Figure 1 The bottom end of the reactor 1 is fixedly provided with a base frame 11, the base frame 11 is threadedly connected with a long platform 4, and a plurality of groups of hydraulic feet 41 are provided on the outside of the long platform 4;

[0058] In this embodiment: the bottom frame 11 is used to keep the reactor 1 stable when in operation, and the long platform 4 is used to stably connect two reactors 1 in series to prevent one of the reactors 1 from being affected by external forces and causing position deviation;

[0059] As a technical optimization solution of the present invention, multiple groups of hydraulic support feet 41 arranged on the outside of the long platform 4 can adjust the height of the long platform 4.

[0060] Please refer to Figure 3 , Figure 5 and Figure 7 ,

[0061] In summary, the working principle of a horizontal stirring device for preparing polypropylene in an embodiment of the utility model is as follows: the motor 31 is started to drive the first rotating rod 25 to rotate, and the rotating first rotating rod 25 drives the first feeding part 251 to make the raw material move linearly in the first pipe 21 until it moves to the stirring part 252. The first feeding part 251 rotates while driving the stirring part 252 and the second feeding part 253 to rotate synchronously. When the raw material reaches the stirring part 252, mixing begins. When the raw material reaches the second feeding part 253 after preliminary mixing, since a closing opening 211 is provided at one end of the first pipe 21, and the area of ​​the second spiral blade 2531 on the second feeding part 253 is larger than that of the first spiral blade 2511, the squeezing of the raw material at this location is improved, so that The stirring part 252 and the first feeding part 251 are displaced along their axial directions. During the process, part of the raw material inside the first pipe 21 will flow back for stirring again. When the stirring part 252 pushes the connecting rod 2521 to move inside the slideway 2513 in the first feeding part 251, the spring 28 inside the slideway 2513 is compressed. When the pressure of the raw material at the closing end 211 of the first pipe 21 decreases, the spring 28 starts to rebound and pushes the stirring part 252 to reset, thereby switching the stirring state in the first pipe 21. When the volume of the raw material at the closing end 211 increases again, the pressure generated will cause the spring 28 to be compressed again, and the cycle repeats, thereby improving the stirring effect of the raw material in the first pipe 21.

[0062] The first spiral blade 2511 on the periphery of the first feeding part 251 can transport the raw materials in a straight line, and the mixing plate 2512 at one end of the first feeding part 251 can perform the first step of mixing on the raw materials entering the first pipe 21. The inclined plate 2523 on the surface of the stirring part 252 can be combined with the mixing plate 2512 when the stirring part 252 is close to the first feeding part 251, so as to increase the mixing area at a single place and improve the mixing effect. The number of the multiple groups of first stirring blades 2524 on the surface of the stirring part 252 and the angles between the blades are different from those of the mixing plate 2512. This design can solve different requirements for raw material mixing. In view of the problem that the radial mixing of particles is uneven and the axial back mixing amount is large, which is not conducive to product uniformity, different gate paddle structures are combined and used to improve the radial mixing and axial diffusion effects of the materials during the stirring process, thereby improving the material stirring efficiency, and then improving the long-term operation capacity and product quality of the reactor 1.

[0063] The edge of the spiral stirring blade 262 fits with the inner wall of the second pipe 22, and can perform secondary stirring on the additives that move to the edge due to centrifugal force in the raw materials after stirring in the first pipe 21, so that the raw materials and the additives can be better integrated.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A horizontal stirring device for preparing polypropylene, characterized in that: The reactor (1) comprises a stirring assembly (2) for mixing polypropylene raw materials, wherein one end of the stirring assembly (2) is connected to a driving assembly (3) for driving the stirring assembly (2); The stirring assembly (2) comprises a first pipe (21) and a second pipe (22) connected to the first pipe (21); a closing end (211) is provided at one end of the first pipe (21); a feeding pipe (24) for feeding raw materials is fixedly connected to one side of the first pipe (21); a first rotating rod (25) is rotatably arranged inside the first pipe (21); and a second rotating rod (26) connected to the first rotating rod (25) is rotatably arranged inside the second pipe (22); The first rotating rod (25) comprises a first feeding portion (251) for conveying raw materials, one end of the first feeding portion (251) is slidably connected to a stirring portion (252) for mixing the raw materials, and one end of the stirring portion (252) is connected to a second feeding portion (253) for conveying the raw materials into the second pipe (22).

2. A horizontal stirring device for preparing polypropylene according to claim 1, characterized in that: The first feeding portion (251) is spirally wound with a first spiral blade (2511) on its periphery; a plurality of groups of mixing plates (2512) are arranged at equal intervals at one end of the first feeding portion (251) along the circumferential direction of its axis; an inclined plate (2523) matching the mixing plate (2512) is arranged on the surface of the stirring portion (252); a plurality of groups of first stirring blades (2524) are arranged on the surface of the stirring portion (252); a second stirring blade (2525) having the same number and spacing as the mixing plate (2512) is fixedly arranged at one end of the stirring portion (252); a connecting port (2526) is also provided at one end of the stirring portion (252); and a second spiral blade (2531) having an area larger than that of the first spiral blade (2511) is arranged on the second feeding portion (253).

3. A horizontal stirring device for preparing polypropylene according to claim 2, characterized in that: A slideway (2513) is provided at one end of the first feeding portion (251), a guide groove (2514) is provided on the inner wall of the slideway (2513), and a spring (28) is also installed inside the slideway (2513). A connecting rod (2521) located inside the slideway (2513) is provided at one end of the stirring portion (252), and an insert (2522) matching the guide groove (2514) is fixedly provided on the outer side of the connecting rod (2521).

4. A horizontal stirring device for preparing polypropylene according to claim 1, characterized in that: The first pipe (21) and the second pipe (22) are provided with a stabilizing member (23), the stabilizing member (23) comprising a fixing rod (231) fixed on the inner wall of the reactor (1), a collar (232) sleeved on the outer wall of the first pipe (21) and the second pipe (22) being fixedly provided at one end of the fixing rod (231), and an anti-slip surface (233) being fixedly provided inside the collar (232).

5. A horizontal stirring device for preparing polypropylene according to claim 3, characterized in that: A sealing ring (27) is fixedly provided at one end of each of the first feeding portion (251) and the stirring portion (252).

6. A horizontal stirring device for preparing polypropylene according to claim 1, characterized in that: A spiral stirring blade (262) is arranged on the outer side of the second rotating rod (26), and a second reinforcing rod (2621) fixedly connected to the surface of the second rotating rod (26) is fixedly arranged on the spiral stirring blade (262), and a third spiral blade (263) is also spirally wound on the surface of the second rotating rod (26).

7. A horizontal stirring device for preparing polypropylene according to claim 6, characterized in that: A reinforcing sheet (261) is fixedly provided at one end of the second rotating rod (26), a first reinforcing rod (2611) connected to the second rotating rod (26) is fixedly provided at one end of the reinforcing sheet (261), and the first reinforcing rod (2611) is fixedly connected to the spiral stirring sheet (262).

8. A horizontal stirring device for preparing polypropylene according to claim 1, characterized in that: The driving assembly (3) comprises a motor (31) for driving the first rotating rod (25) to rotate, a mounting seat (32) being mounted on one end of the motor (31), and a reducer (33) connected to the motor (31) and the first rotating rod (25) being mounted on one side of the mounting seat (32).

9. A horizontal stirring device for preparing polypropylene according to claim 8, characterized in that: A connecting seat (34) is also provided at one end of the reducer (33), and a mounting opening (341) is provided in the connecting seat (34), and the mounting opening (341) is connected to the feed pipe (24).

10. A horizontal stirring device for preparing polypropylene according to claim 1, characterized in that: A base frame (11) is fixedly arranged at the bottom end of the reactor (1), a long platform (4) is threadedly connected to the base frame (11), and a plurality of groups of hydraulic support feet (41) are arranged on the outside of the long platform (4).

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