Condensation reaction kettle for preparing rubber antioxidant

Abstract

The utility model relates to the technical field of condensation reaction equipment, and discloses a condensation reaction kettle for preparing a rubber antioxidant, which comprises a reaction kettle main body and a driving motor fixedly arranged at the top of the reaction kettle main body, the output end of the driving motor is fixedly connected with a rotating shaft, and a mixing component is arranged at the joint of the rotating shaft and the reaction kettle main body. Through the arrangement of the mixing assembly, when materials in the reaction kettle main body are axially mixed and stirred, the rotary drum drives the blades to rotate in the reaction kettle main body, so that the materials in the reaction kettle main body can be longitudinally mixed, and the materials in the reaction kettle main body can be uniformly mixed through axial and longitudinal double stirring; compared with the prior art, the reaction kettle has the advantages that reactants can be fully contacted and mixed in the reaction kettle main body, so that the reaction speed is increased, and the two rotary drums drive the blades to rotate in opposite directions in the reaction kettle main body, so that strong shearing force and vortex can be formed during mixing, materials can be more effectively scattered and mixed, and the mixing uniformity is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of condensation reaction equipment, and more specifically to a condensation reaction kettle for preparing a rubber antioxidant. Background Art

[0002] Rubber antioxidant is an additive used in rubber products, which can improve its aging resistance and extend its service life. Therefore, it plays an important role in the rubber industry. The condensation reactor used for the preparation of rubber antioxidant is a kind of equipment specially used in the synthesis process of rubber antioxidant. In the synthesis of rubber antioxidant, the reactor mixes the reactants together by heating and stirring to promote the chemical reaction. The reaction usually involves the condensation reaction of different chemical substances, that is, the process of small molecules being removed to form higher molecules.

[0003] In the prior art, when mixing the materials inside the condensation reactor for preparing rubber antioxidants, the materials are mixed mainly by driving the stirring rod to rotate by a driving motor, which easily forms mixing dead zones in the reactor. These zones are not fully stirred and the materials are not mixed evenly, resulting in incomplete reaction of some materials or excessive side reactions. In addition, the mixing efficiency of unidirectional stirring is relatively low. In particular, for high-viscosity materials or materials that require highly uniform mixing, long-term stirring is required to achieve the desired mixing effect, which prolongs the production cycle. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a condensation reaction kettle for preparing a rubber antioxidant to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a condensation reactor for preparing a rubber antioxidant, comprising a reactor body and a driving motor fixedly installed on the top of the reactor body, wherein the output end of the driving motor is fixedly connected to a rotating shaft, the outer surface of the rotating shaft is fixedly connected to a connecting rod, the end surface of the connecting rod is fixedly connected to a stirring plate, and a mixing assembly is installed at the connection between the rotating shaft and the reactor body;

[0006] The mixing assembly includes a main shaft rotatably connected to the inside of the rotating shaft, a fixing rod is fixedly connected to the bottom end of the outer surface of the main shaft, and the end face of the fixing rod is fixedly connected to the inner bottom surface of the reactor body, the top of the main shaft is fixedly connected to the first bevel gear, the outer surface of the rotating shaft is fixedly connected to the fixing rod, the surface of the first bevel gear is meshingly connected to the second bevel gear, the surface center of the second bevel gear is fixedly connected to the rotating rod, the end of the rotating rod away from the second bevel gear is fixedly connected to the driving gear, the outer surface of the fixing rod is fixedly installed with a locating bearing, the outer ring of the locating bearing is fixedly connected to a rotating drum, the inner wall of the rotating drum is fixedly connected with an internal gear ring, a sealing ring is fixedly installed on the inner side of the rotating drum close to the rotating shaft, and blades are fixedly connected to the outer surface of the rotating drum at equal intervals.

[0007] Furthermore, the number of the second bevel gears is two, and surfaces of the two second bevel gears are meshedly connected to the surface of the first bevel gear.

[0008] Furthermore, the outer surface of the main shaft is rotatably connected to the inside of the rotating shaft through a fixed bearing, and the outer surface of the rotating rod is rotatably connected to the inside of the fixed rod through a fixed bearing.

[0009] Furthermore, the first bevel gear and the second bevel gear are both rotatably connected inside the rotating shaft, and one end of the main shaft away from the first bevel gear extends to the bottom of the rotating shaft.

[0010] Furthermore, the surface of the driving gear is meshingly connected to the inner wall of the inner gear ring, and the surface of the sealing ring is sealingly rotatably connected to the outer surface of the fixing rod.

[0011] Furthermore, the rotating drum and the rotating shaft are both rotatably connected to the inside of the reactor body, and the rotating drum is rotatably connected to the outside of the fixed rod through a positioning bearing.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model provides a mixing assembly. When the driving motor drives the rotating shaft, the connecting rod and the stirring plate to rotate and axially mix and stir the materials inside the reactor body, the rotating shaft will also rotate outside the main shaft. At this time, the second bevel gear is rotatably connected to the surface of the first bevel gear. The second bevel gear drives the driving gear and the inner gear ring to rotate through the rotating rod, and finally drives the blades to rotate inside the reactor body through the rotating drum, so that the materials inside the reactor body can be longitudinally mixed. Through the dual axial and longitudinal stirring, it can ensure that the reactants are fully contacted and mixed in the reactor body, thereby accelerating the reaction speed and improving the production efficiency. At the same time, multi-dimensional stirring can enhance the mass transfer and heat transfer effects, which is beneficial to the control and uniform distribution of the reaction temperature, reduce local overheating or supercooling, and improve the reaction efficiency.

[0014] 2. The utility model provides two second bevel gears meshingly connected with the first bevel gear, so that the two rotating drums drive the blades to rotate in opposite directions inside the reactor body. Therefore, strong shearing force and eddy current are formed during mixing, which can more effectively break up and mix the materials, especially for materials with high viscosity, and significantly improve the mixing uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a schematic diagram of the connection between the rotating shaft and the mixing assembly in the utility model;

[0017] Figure 3 It is a cross-sectional view of the mixing assembly in the utility model;

[0018] Figure 4 It is a schematic diagram of the connection between the rotating drum, the positioning bearing, the inner gear ring and the sealing ring in the utility model.

[0019] The accompanying drawings are marked as follows: 1. Reactor body; 2. Drive motor; 3. Rotating shaft; 4. Connecting rod; 5. Stirring plate; 6. Mixing assembly; 61. Main shaft; 62. Fixed rod; 63. First bevel gear; 64. Second bevel gear; 65. Rotating rod; 66. Drive gear; 67. Positioning bearing; 68. Rotating drum; 69. Internal gear ring; 610. Sealing ring; 611. Blade; 612. Fixed rod. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0021] Figure 1-4 It is the best embodiment of the utility model, and the following Figure 1-4 The utility model is further described.

[0022] A condensation reactor for preparing a rubber antioxidant, comprising a reactor body 1 and a driving motor 2 fixedly mounted on the top of the reactor body 1, wherein a rotating shaft 3 is fixedly connected to the output end of the driving motor 2, a connecting rod 4 is fixedly connected to the outer surface of the rotating shaft 3, a stirring plate 5 is fixedly connected to the end surface of the connecting rod 4, and a mixing assembly 6 is installed at the connection between the rotating shaft 3 and the reactor body 1;

[0023] The mixing assembly 6 includes a main shaft 61 rotatably connected to the inside of the rotating shaft 3, a fixing rod 62 is fixedly connected to the bottom end of the outer surface of the main shaft 61, and the end face of the fixing rod 62 is fixedly connected to the inner bottom surface of the reactor body 1, a first bevel gear 63 is fixedly connected to the top of the main shaft 61, a fixing rod 612 is fixedly connected to the outer surface of the rotating shaft 3, the surface of the first bevel gear 63 is meshingly connected to the second bevel gear 64, a rotating rod 65 is fixedly connected at the center of the surface of the second bevel gear 64, and a driving gear 66 is fixedly connected to the end of the rotating rod 65 away from the second bevel gear 64, a locating bearing 67 is fixedly installed on the outer surface of the fixing rod 612, a rotating drum 68 is fixedly connected to the outer ring of the locating bearing 67, an inner gear ring 69 is fixedly connected to the inner wall of the rotating drum 68, a sealing ring 610 is fixedly installed on the inner side of the rotating drum 68 close to the rotating shaft 3, and blades 611 are fixedly connected to the outer surface of the rotating drum 68 at equal intervals.

[0024] In this embodiment, by setting a mixing component 6, when the driving motor 2 drives the rotating shaft 3, the connecting rod 4 and the stirring plate 5 to rotate and axially mix and stir the materials inside the reactor body 1, the rotating shaft 3 will also rotate outside the main shaft 61. At this time, the second bevel gear 64 is rotatably connected to the surface of the first bevel gear 63. The second bevel gear 64 drives the driving gear 66 and the inner gear ring 69 to rotate through the rotating rod 65, and finally drives the blade 611 to rotate inside the reactor body 1 through the rotating drum 68, so that the materials inside the reactor body 1 can be longitudinally mixed. Through the dual axial and longitudinal stirring, it can ensure that the reactants are fully contacted and mixed in the reactor body 1, thereby accelerating the reaction speed and improving the production efficiency. At the same time, multi-dimensional stirring can enhance the mass transfer and heat transfer effects, which is beneficial to the control and uniform distribution of the reaction temperature, reduce local overheating or supercooling, and improve the reaction efficiency.

[0025] Specifically, there are two second bevel gears 64 , and surfaces of the two second bevel gears 64 are meshedly connected to the surface of the first bevel gear 63 .

[0026] In this embodiment, two second bevel gears 64 are provided to mesh with the first bevel gear 63, so that the two rotating drums 68 drive the blades 611 to rotate in opposite directions inside the reactor body 1. Therefore, strong shear force and vortex are formed during mixing, which can more effectively break up and mix the materials, especially for materials with high viscosity, and significantly improve the mixing uniformity.

[0027] Specifically, the outer surface of the main shaft 61 is rotatably connected to the inside of the rotating shaft 3 through a fixed bearing, and the outer surface of the rotating rod 65 is rotatably connected to the inside of the fixed rod 612 through a fixed bearing.

[0028] In this embodiment, by providing a fixed bearing, the stability of the main shaft 61 and the rotating rod 65 during rotation can be enhanced.

[0029] Specifically, the first bevel gear 63 and the second bevel gear 64 are both rotatably connected to the interior of the rotating shaft 3 , and one end of the main shaft 61 away from the first bevel gear 63 extends to the bottom of the rotating shaft 3 .

[0030] In this embodiment, by extending one end of the main shaft 61 away from the first bevel gear 63 to the bottom of the rotating shaft 3, the main shaft 61 can be fixed by the fixing rod 62 to prevent the main shaft 61 from rotating.

[0031] Specifically, the surface of the driving gear 66 is meshedly connected to the inner wall of the inner gear ring 69 , and the surface of the sealing ring 610 is sealingly rotatably connected to the outer surface of the fixing rod 612 .

[0032] In this embodiment, the driving gear 66 is meshed with the inner gear ring 69 to drive the rotating drum 68 to rotate outside the fixing rod 612 .

[0033] Specifically, the rotating drum 68 and the rotating shaft 3 are both rotatably connected to the inside of the reactor body 1 , and the rotating drum 68 is rotatably connected to the outside of the fixed rod 612 through the positioning bearing 67 .

[0034] In this embodiment, by providing a positioning bearing 67 , it is possible to ensure that the drum 68 rotates stably, and the blades 611 can achieve stable mixing and stirring of the materials inside the reactor body 1 .

[0035] The working principle and use process of the utility model are as follows: when in use, after the material is placed inside the reactor body 1, the driving motor 2 is started, and the driving motor 2 rotates axially inside the reactor body 1 through the rotating shaft 3, the connecting rod 4 and the stirring plate 5, and mixes the material. At the same time, the rotating shaft 3 will also rotate outside the main shaft 61. At this time, due to the meshing of the second bevel gear 64 and the first bevel gear 63, the second bevel gear 64 will rotate on the surface connected to the first bevel gear 63, and the second bevel gear 64 will drive the driving gear 66 and the inner gear ring 69 to rotate through the rotating rod 65, and the inner gear ring 69 will drive the rotating drum 68 to rotate, and finally the blade 611 will be driven to rotate inside the reactor body 1 through the rotating drum 68, so as to stir the reactor body 1. The materials inside the reactor body 1 are mixed longitudinally. Through the dual stirring in the axial and longitudinal directions, it can be ensured that the reactants are fully contacted and mixed in the reactor body 1, thereby accelerating the reaction speed and improving the production efficiency. At the same time, multi-dimensional stirring can enhance the mass transfer and heat transfer effects, which is beneficial to the control and uniform distribution of the reaction temperature, reduce local overheating or supercooling, and improve the reaction efficiency. By setting two second bevel gears 64 to be meshed and connected with the first bevel gear 63, the two rotating drums 68 drive the blades 611 to rotate in opposite directions inside the reactor body 1. Therefore, strong shear force and vortex will be formed during mixing, which can more effectively break up and mix the materials, especially for materials with high viscosity, and significantly improve the mixing uniformity.

[0036] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A condensation reactor for preparing a rubber antioxidant, comprising a reactor body (1) and a drive motor (2) fixedly mounted on the top of the reactor body (1), characterized in that: The output end of the driving motor (2) is fixedly connected to a rotating shaft (3), the outer surface of the rotating shaft (3) is fixedly connected to a connecting rod (4), the end surface of the connecting rod (4) is fixedly connected to a stirring plate (5), and a mixing assembly (6) is installed at the connection between the rotating shaft (3) and the reactor body (1); The mixing assembly (6) comprises a main shaft (61) rotatably connected to the inside of the rotating shaft (3); a fixing rod (62) is fixedly connected to the bottom end of the outer surface of the main shaft (61); the end surface of the fixing rod (62) is fixedly connected to the inner bottom surface of the reactor body (1); a first bevel gear (63) is fixedly connected to the top of the main shaft (61); a fixing rod (612) is fixedly connected to the outer surface of the rotating shaft (3); a second bevel gear (64) is meshingly connected to the surface of the first bevel gear (63); a second bevel gear (64) is fixedly connected to the center of the surface of the second bevel gear (64); A rotating rod (65) is fixedly connected thereto; one end of the rotating rod (65) away from the second bevel gear (64) is fixedly connected to a driving gear (66); a locating bearing (67) is fixedly mounted on the outer surface of the fixed rod (612); the outer ring of the locating bearing (67) is fixedly connected to a rotating cylinder (68); an inner gear ring (69) is fixedly connected to the inner wall of the rotating cylinder (68); a sealing ring (610) is fixedly mounted on the inner side of the rotating cylinder (68) close to the rotating shaft (3); and blades (611) are fixedly mounted on the outer surface of the rotating cylinder (68) at equal intervals.

2. A condensation reaction kettle for preparing a rubber antioxidant according to claim 1, characterized in that: The number of the second bevel gears (64) is two, and the surfaces of the two second bevel gears (64) are both meshedly connected to the surface of the first bevel gear (63).

3. The condensation reactor for preparing a rubber antioxidant according to claim 1, characterized in that: The outer surface of the main shaft (61) is rotatably connected to the inside of the rotating shaft (3) via a fixed bearing, and the outer surface of the rotating rod (65) is rotatably connected to the inside of the fixed rod (612) via a fixed bearing.

4. The condensation reactor for preparing a rubber antioxidant according to claim 1, characterized in that: The first bevel gear (63) and the second bevel gear (64) are both rotatably connected to the interior of the rotating shaft (3), and an end of the main shaft (61) away from the first bevel gear (63) extends to the bottom of the rotating shaft (3).

5. The condensation reaction kettle for preparing a rubber antioxidant according to claim 1, characterized in that: The surface of the driving gear (66) is meshingly connected to the inner wall of the inner gear ring (69), and the surface of the sealing ring (610) is sealingly rotatably connected to the outer surface of the fixing rod (612).

6. The condensation reaction kettle for preparing a rubber antioxidant according to claim 1, characterized in that: The rotating drum (68) and the rotating shaft (3) are both rotatably connected to the inside of the reactor body (1), and the rotating drum (68) is rotatably connected to the outside of the fixed rod (612) via a positioning bearing (67).

Images