Reaction device for rubber antioxidant

Abstract

The utility model belongs to the technical field of rubber anti-aging agent production, and particularly relates to a rubber anti-aging agent reaction device which comprises a barrel with the upper end face and the lower end face both in a hemispherical shape, a feeding valve port is formed in the cambered surface of the upper end of the barrel, and a stirring frame is rotationally arranged in the barrel below the feeding valve port. A plurality of first heating cores are arranged on the inner wall of the barrel, a plurality of bent backflow pipes are evenly connected to the outer circle face of the barrel in the circumferential direction, spiral shafts are rotationally arranged in the backflow pipes, heating ring pipes are arranged outside the backflow pipes, a plurality of second heating cores are arranged in the heating ring pipes, and the spiral shafts are arranged in the second heating cores. The reaction kettle disclosed by the utility model has the advantages that through the arrangement of the return pipe, the spiral shaft, the heating ring pipe, the filter screen and the like, raw materials accumulated at the bottom and the outer edge can flow back upwards to finish secondary stirring in the original stirring reaction process, and secondary reaction can be finished in the return process; and the reaction quality and efficiency are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber antioxidant production, in particular to a reaction device for the rubber antioxidant. Background Art

[0002] During the use of rubber, it will be affected by external factors and age, causing its physical and mechanical properties to change, causing the rubber to lose elasticity, mechanical properties to decline, and service life to be shortened. In order to solve the problem of rubber aging, it is necessary to add appropriate additives to the rubber in order to inhibit or delay the aging process and extend the service life of the rubber. This additive that prevents rubber aging is called a rubber antioxidant. In the production process of the rubber antioxidant DTPD, a condensation reaction must first be carried out. During the condensation reaction, the condensation reaction solution must be heated, and the condensation reaction time needs to be several hours. In order to ensure a good reaction effect, some special devices have appeared.

[0003] For example, patent application number CN201821794190.9 discloses a rubber antioxidant DTPD reaction device, including a reactor, a feed port and an exhaust port are provided on the top of the reactor, a discharge port is provided on the lower end, a stirring shaft is provided in the reactor, the stirring shaft is driven by a stirring motor, a stirring blade is provided on the stirring shaft, an insulation shell is provided on the outside of the reactor, an insulation chamber is formed between the insulation shell and the reactor, a heating medium inlet and a heating medium outlet are provided in the insulation chamber, the exhaust port is connected to the cooling tower and the phase separator in sequence through a pipeline, the phase separator is provided with an additive addition port, a discharge port is provided on the upper end of the phase separator, and a water outlet is provided on the lower end. The device can improve the uniformity of the reaction and the insulation effect, and save energy.

[0004] In the prior art, the uniformity of the reaction and the insulation effect are improved by setting up an insulation shell and a stirring shaft. However, there are still certain deficiencies in the overall use process: the prior art stirs by means of a stirring shaft, and there are many dead corners as a whole. Most of the raw materials will accumulate at the bottom of the reactor or away from the edge after stirring, resulting in poor reaction effect. The prior art lacks structures and settings that can effectively handle them, which affects the overall molding quality. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a reaction device for a rubber antioxidant. The utility model arranges a reflux pipe, a spiral shaft, a heating ring pipe, a filter screen, etc., so that the raw materials accumulated at the bottom and the outer edge during the stirring reaction can not only reflux upward to complete secondary stirring, but also complete secondary reaction during the reflux process, thereby effectively improving the reaction quality and efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reaction device for a rubber antioxidant, comprising a cylinder with hemispherical upper and lower end faces, a feed valve port being arranged on the arc surface of the upper end of the cylinder, a stirring frame being arranged rotatably in the cylinder below the feed valve port, a plurality of first heating cores being arranged on the inner wall of the cylinder, a plurality of bent reflux pipes being evenly connected and arranged along the circumferential direction on the outer circumferential surface of the cylinder, a spiral shaft being arranged rotatably in the reflux pipe, a heating ring pipe being arranged outside the reflux pipe, and a plurality of second heating cores being arranged in the heating ring pipe. The arrangement of the spiral shaft and the heating ring pipe allows the raw materials to be subjected to secondary heating reaction treatment during the upward reflux process.

[0007] Preferably, an exhaust port is provided on one side of the top of the cylinder, and a discharge valve port is provided on the bottom of the cylinder. The exhaust port and the discharge valve port are provided to facilitate the discharge of the reaction gas and the discharge of the molding material.

[0008] Preferably, an upwardly inclined conduit is connected between the bottom of each reflux pipe and the cylinder, a filter is arranged inside each of the inclined conduits, a connecting ring is arranged outside the filter and connected to the outer circumferential surface of the inclined conduit, and a third heating core is arranged inside the connecting ring. The arrangement of the filter and the connecting ring can filter and heat the raw materials refluxed upward, thereby improving the reaction quality.

[0009] Preferably, a plurality of vibrators are evenly arranged on the outer circumferential surface of the connecting ring along the circumferential direction. The arrangement of the plurality of vibrators can effectively prevent the filter from being blocked.

[0010] Preferably, a first driving motor is arranged on the top of the cylinder, and an output end of the first driving motor is interconnected with the stirring frame.

[0011] Preferably, a connecting platform is provided at the bend at the top of the reflux pipe, a second driving motor is provided on the upper surface of the connecting platform, and an output end of the second driving motor is connected to the top of the spiral shaft.

[0012] In summary, compared with the prior art, the beneficial effects of this solution are:

[0013] The utility model arranges the reflux pipe, the spiral shaft and the heating ring pipe, so that the inside of the cylinder is stirred and heated as a whole. In the process of completing the reaction, the raw materials at the bottom or the outer edge of the cylinder can be re-discharged into the cylinder upwardly and the raw materials can be heated for a second time, which effectively improves the reaction quality and efficiency.

[0014] The utility model screens the raw materials and performs centralized rapid heating treatment during the upward reflux of the raw materials through the arrangement of the filter screen, the connecting ring, the third heating core, the vibrator, etc., thereby reducing the reaction pressure inside the cylinder and effectively improving the reaction quality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a front view of the utility model as a whole;

[0017] Figure 3 The utility model is an overall top view;

[0018] Figure 4 A schematic diagram of the cross-sectional structure of the utility model at AA;

[0019] Figure 5 B is an enlarged schematic diagram of the utility model;

[0020] Figure 6 An enlarged schematic diagram of the structure of the utility model C; DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0022] Embodiment 1:

[0023] refer to Figure 1-6 A reaction device for a rubber antioxidant comprises a cylinder 10 whose upper and lower end surfaces are both hemispherical, a feed valve port 12 is arranged on the arc surface of the upper end of the cylinder 10, a stirring frame 17 is rotatably arranged in the cylinder 10 below the feed valve port 12, a plurality of first heating cores 18 are arranged on the inner wall of the cylinder 10, a plurality of bent reflux pipes 11 are evenly connected and arranged along the circumferential direction on the outer circular surface of the cylinder 10, a spiral shaft 20 is rotatably arranged in the reflux pipe 11, a heating ring pipe 14 is arranged outside the reflux pipe 11, and a plurality of second heating cores 19 are arranged in the heating ring pipe 14.

[0024] Specifically, the upper end surface of the cylinder 10 is hemispherical, which is convenient for the antioxidant to collect and discharge gas during the reaction process. The feed valve port 12 is arranged on one side of the upper hemisphere of the cylinder 10, and is used to pour the raw materials into the cylinder 10. When a certain amount of raw materials are stored in the cylinder 10, the multiple first heating cores 18 on the inner wall of the cylinder 10 will heat the cylinder 10, and then the stirring frame 17 will rotate, so as to stir the raw materials, so that the raw materials are mixed and reacted;

[0025] During the stirring reaction of the raw materials, due to the weight and the hemispherical nature of the bottom of the cylinder 10, the raw materials will accumulate at the bottom of the cylinder 10, and one end of the reflux pipe 11 is connected to the bottom of the cylinder 10, and the other end is connected to the relatively upper outer cylindrical surface of the cylinder 10. When the raw materials accumulate at the bottom of the cylinder 10, part of the raw materials will flow into the reflux pipe 11 due to their own gravity. At this time, the spiral shaft 20 in the reflux pipe 11 will rotate, thereby stirring the raw materials flowing into the reflux pipe 11, and forming an upward-flowing spiral vortex inside the reflux pipe 11, so that the raw materials gathered at the bottom of the cylinder 10 that cannot be fully mixed and reacted can flow back to the top of the cylinder 10 through the top end of the reflux pipe 11, thereby completing the up and down circulation processing of the raw materials.

[0026] In the above process, the multiple second heating cores 19 arranged outside the reflux pipe 11 in the heating ring pipe 14 will perform centralized heating treatment on the reflux pipe 11, so that the raw materials rolling upward in the reflux pipe 11 can receive secondary heating reaction treatment, thereby improving the reaction effect and quality.

[0027] refer to Figure 1 An exhaust port 13 is provided on one side of the top of the cylinder 10 , and a discharge valve port 16 is provided on the bottom of the cylinder 10 .

[0028] Specifically, the exhaust port 13 is arranged at one side of the outer spherical surface at the top of the cylinder 10, and the gas flowing upward from the reaction can be discharged to the outside. The discharge valve port 16 is arranged at the center of the bottom circle of the cylinder 10, and the materials after the reaction can be discharged to the outside.

[0029] refer to Figure 5 An upwardly inclined duct 24 is connected between the bottom of each reflux pipe 11 and the cylinder 10, and a filter screen 21 is arranged in each inclined duct 24. A connecting ring 15 is connected to the outer circumferential surface of the filter screen 21 and the inclined duct 24, and a third heating core 23 is arranged in the connecting ring 15.

[0030] Specifically, the inclined conduit 24 is tilted upward at a certain angle as a whole and is interconnected with one end of the bottom of the reflux pipe 11. Compared with the right-angle connection, this setting is convenient for the raw materials to move upward smoothly. The filter screen 21 can filter the raw materials with larger particles that have not effectively reacted. The filter screen 21 is made of a metal material with fast heat conduction. The externally connected third heating core 23 can perform high-temperature heating treatment on the filter screen 21, so that the filter screen 21 can perform local positioning heating on the raw materials filtered on one side, so that it can react quickly and melt to a suitable size, and then return to the top position in the cylinder 10 through processing, thereby improving the reaction quality.

[0031] refer to Figure 1 A first driving motor 25 is disposed on the top of the cylinder 10 , and an output end of the first driving motor 25 is connected to the stirring frame 17 .

[0032] Specifically, the first driving motor 25 is a prior art, and this solution will not elaborate on it in detail. The output end of the first driving motor 25 can drive the stirring frame 17 to rotate, so as to stir the raw materials inside the cylinder 10.

[0033] refer to Figure 6 A connecting platform 27 is provided at the top bend of the reflux pipe 11 , and a second driving motor 26 is provided on the upper end surface of the connecting platform 27 . The output end of the second driving motor 26 is connected to the top of the spiral shaft 20 .

[0034] Specifically, the second drive motor 26 is a prior art, and this solution will not elaborate on it in detail. The output end of the second drive motor 26 can drive the spiral shaft 20 to rotate, so that the raw materials at the bottom of the cylinder 10 can be smoothly rolled upward to complete a large amount of flipping processing.

[0035] Embodiment 2:

[0036] On the basis of or different from the first embodiment, reference Figure 5 A plurality of vibrators 22 are evenly arranged on the outer circumferential surface of the connecting ring 15 along the circumferential direction.

[0037] Specifically, the vibrator 22 is a prior art, and the output end of the vibrator 22 is interconnected with the outer cylindrical surface of the connecting ring 15. When powered on, the connecting ring 15 and the filter 21 can be subjected to high-frequency vibration treatment, so that the raw materials intercepted by the filter 21 but not completely dissolved can be vibrated, thereby reducing the occurrence of blockage and ensuring the fluidity of the raw materials.

[0038] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0039] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0040] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present application, and should be within the scope of protection of the claims attached to the present application.

Claims

1. A reaction device for a rubber antioxidant, comprising a cylinder (10) with hemispherical upper and lower end surfaces, characterized in that: A feed valve port (12) is arranged on the arc surface at the upper end of the cylinder (10), and a stirring frame (17) is rotatably arranged in the cylinder (10) below the feed valve port (12). A plurality of first heating cores (18) are arranged on the inner wall of the cylinder (10), and a plurality of bent reflux pipes (11) are connected to the outer circumferential surface of the cylinder (10), and a spiral shaft (20) is rotatably arranged in the reflux pipe (11). A heating ring pipe (14) is arranged outside the reflux pipe (11), and a plurality of second heating cores (19) are arranged in the heating ring pipe (14).

2. The reaction device of a rubber antioxidant according to claim 1, characterized in that: An exhaust port (13) is provided on one side of the top of the cylinder (10), and a discharge valve port (16) is provided on the bottom of the cylinder (10).

3. The reaction device of a rubber antioxidant according to claim 1, characterized in that: An upwardly inclined duct (24) is connected between the bottom of each return pipe (11) and the cylinder (10), a filter screen (21) is arranged inside each inclined duct (24), a connecting ring (15) is connected to the outside of the filter screen (21) and the outer circumferential surface of the inclined duct (24), and a third heating core (23) is arranged inside the connecting ring (15).

4. The reaction device of a rubber antioxidant according to claim 3, characterized in that: A plurality of vibrators (22) are arranged on the outer circumferential surface of the connecting ring (15).

5. The reaction device of a rubber antioxidant according to claim 1, characterized in that: A first driving motor (25) is arranged on the top of the cylinder (10), and an output end of the first driving motor (25) is interconnected with the stirring frame (17).

6. The reaction device of a rubber antioxidant according to claim 1, characterized in that: A connecting platform (27) is provided at the top bend of the return pipe (11), a second drive motor (26) is provided on the upper end surface of the connecting platform (27), and an output end of the second drive motor (26) is connected to the top of the spiral shaft (20).

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