Preparation method and processing device of antioxidant rubber compound

Abstract

The invention relates to the technical field of anti-oxidation rubber compound preparation, and discloses an anti-oxidation rubber compound preparation method and an anti-oxidation rubber compound processing device.The anti-oxidation rubber compound processing device comprises a frame structure, and square material alloy supporting legs are fixedly arranged at the lower ends of the four corners of the frame structure through bolts or welding; side end supports which are symmetrical left and right are fixedly arranged on the frame structure through bolts, a hollow mulling barrel is fixedly arranged between the side end supports through bolts, a stirring shaft for mulling is rotationally arranged in the mulling barrel, and a supporting frame is further fixedly arranged on the side edge of the frame structure. According to the invention, an oxygen-free mulling environment is formed through special mulling equipment, and a rubber compound with an extremely low oxidation rate is obtained through high-speed mulling and stirring after the rubber compound is added, so that the degree of oxidative decomposition and reduction of internal molecules of the rubber compound is small, and good practical life of the material can be maintained.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of antioxidant mixed rubber, in particular to a preparation method of antioxidant mixed rubber and a processing device thereof. Background Art

[0002] Compound silicone rubber is a basic rubber compound made of polyorganosiloxane (commonly known as raw rubber), a linear high polymer containing methyl or vinyl groups, combined with reinforcing fillers, incremental fillers and additives that impart various properties.

[0003] Rubber mix for extrusion molding is usually made of methyl vinyl silicone raw rubber, fumed silica and other additives. After adding DCBP, it can be made into products such as hoses, rubber strips and wires and cables by extruder and hot air vulcanization process. Rubber mix for extrusion requires a certain plasticity. When using a grade with too low hardness, the plasticity of the plastic is too low, it is easy to become sticky, foam, the die mouth expands greatly, and the diameter of the extrudate exceeds the die mouth diameter too much, affecting the extrusion process and the appearance of the product. On the contrary, if a grade with too high hardness is used, it will be difficult to extrude due to the small die mouth expansion. The applicable hardness (Shore A) is 50-70. Precipitated silica is not suitable for use as a reinforcing filler for silicone rubber for extrusion molding due to its high water content, otherwise it is easy to cause foaming of the product during hot air vulcanization.

[0004] White carbon black is an ideal filler for green tires. Applying it to tires can reduce the heat generation and hysteresis of rubber, reduce the rolling resistance of tires, have low heat generation, high tensile strength and tear strength, good aging resistance of rubber, save fuel, and the dust pollution of the entire production process is small, saving energy. However, due to the large specific surface area of ​​white carbon black particles, high surface free energy, large number of surface atoms and extremely unstable, easy to combine with other atoms, when the amount of white carbon black is large, it is difficult to make white carbon black evenly dispersed in rubber materials by traditional dry rubber mixing process. In practical applications, the dispersion degree of white carbon black is improved by adding coupling agents, but a multi-stage rubber mixing process is still required, which is energy-consuming and time-consuming. In order to solve this technical problem, we adopt a wet modified mixing process to prepare natural rubber white carbon black masterbatch. The wet modified natural rubber white carbon black masterbatch is made by mixing white carbon black slurry with natural rubber latex through blending, co-coagulation, creping, granulation, water washing, drying, etc., so that the mixing of white carbon black is carried out in the liquid phase, and the dispersion and uniformity are improved.

[0005] Closed rubber mixing machine is also called internal mixer, which is mainly used for rubber plasticizing and mixing. Internal mixer is a machine with a pair of relatively rotating rotors of specific shapes, which plasticizes and mixes polymer materials intermittently under a closed state with adjustable temperature and pressure. It is mainly composed of internal mixing chamber, rotor, rotor sealing device, feeding and pressing device, unloading device, transmission device and machine base.

[0006] Common internal mixers include bucket mixers and drop mixers. The unloading device of the bucket mixer is a bucket type. When unloading, the pressure weight is lifted, and the mixing chamber is turned outward through the turning transmission device to unload the refined rubber from the mixing chamber into the hopper, and the hopper transports the rubber to the open mixer. The turning device of the mixing chamber can be a turbine screw or a screw nut; the unloading mechanism of the drop mixer is a swing drop type, which is composed of a lower top bolt, a support, a locking device and an opening and closing device. The swing drop type greatly speeds up the speed of feeding and unloading, and has good sealing performance. However, the drop mixer has a big defect, that is, it consumes a lot of energy. The total power of the commonly used 150L bucket mixer during normal operation is about 500KW, while the total power of the 190L drop mixer during normal operation reaches more than 2500KW. Therefore, in order to meet the requirements of energy saving and environmental protection, shortening the refining time of the drop mixer can save a lot of energy. Summary of the invention

[0007] The technical problem to be solved by the present invention is: in order to overcome the above problems, a method for preparing an antioxidant mixed rubber and a processing device thereof are provided, which solve the above problems.

[0008] The present invention solves the technical problem by adopting the following technical solutions:

[0009] A method for preparing an antioxidant rubber compound and a processing device thereof, comprising a frame structure, wherein square alloy support feet are fixedly provided at the lower ends of the four corners of the frame structure by bolts or welding, and left-right symmetrical side end brackets are fixedly provided on the frame structure by bolts, and a hollow mixing barrel is fixedly provided between the side end brackets by bolts, and a mixing shaft for mixing is rotatably provided in the mixing barrel. In addition, a support frame is fixedly provided on the side of the frame structure, a turbine worm reducer is fixedly provided on the support frame, a driving motor for driving is fixedly provided on the turbine worm reducer, and the output shaft of the turbine worm reducer is used to drive and rotate the mixing shaft arranged in the mixing barrel, and in addition, an opening is provided on the side of the mixing barrel for feeding, and two symmetrical articulated arms are hingedly provided on the outer side of the mixing barrel, and a material port cover plate for covering the material feeding opening is fixedly provided between the articulated arms, and an antioxidant feeding port and a helium anti-oxygen supply port which are communicated with the interior of the mixing barrel and are located on the upper side of the mixing barrel, and a discharge port for discharging is provided on the lower side of the mixing barrel.

[0010] In an embodiment of an antioxidant mixed rubber preparation and processing device, a support foot triangular rib is welded and fixed between the square alloy support foot and the frame structure, and the support foot triangular rib is used to improve the relative structural strength of the square alloy support foot and the frame structure, thereby improving stability.

[0011] In an embodiment of an antioxidant mixed rubber preparation and processing device, a rubber buffer foot pad is fixedly provided on the lower end surface of the square alloy support foot to improve the shock absorption performance of the equipment.

[0012] In an embodiment of an antioxidant rubber compound preparation and processing device, an oxygen concentration monitor extending into the mixing cylinder to monitor the oxygen concentration in the mixing cylinder is fixedly provided on the mixing cylinder.

[0013] In an embodiment of an antioxidant compound rubber preparation and processing device, an adjustable clamp ring is fixedly provided on the rotating shaft by bolts, a stirring blade adjustment shaft is fixedly provided at the tail end of the stirring blade by bolts, and the stirring blade adjustment shaft is inserted into the adjustable clamp ring.

[0014] In an embodiment of an antioxidant rubber compound preparation and processing device, the stirring blade adjustment shaft is fixed to the adjustable clamp ring by a set screw and its working radius length can be adjusted.

[0015] In an embodiment of an apparatus for preparing and processing an antioxidant mixed rubber, heating components are fixedly provided at both ends of the mixing barrel for heating the mixed rubber.

[0016] In an embodiment of an antioxidant rubber compound preparation and processing device, a pneumatic telescopic rod is hingedly provided on the mixing cylinder, and the other end of the pneumatic telescopic rod is hingedly connected to the front end of the hinged arm to drive the material port cover to flip and close.

[0017] A method for preparing an antioxidant rubber compound using an antioxidant rubber compound preparation processing device comprises the following steps: firstly, the rubber compound raw material is put into the mixing drum through the side opening of the mixing drum, then the material port cover is closed and the lock is locked, then the helium anti-oxygen supply port is opened to inflate the mixing drum for deoxygenation protection, then the driving motor is started to rotate the rotating shaft after deceleration through the turbine worm reducer, the rotating speed of the rotating shaft is not less than the oxygen concentration monitor revolution per minute, and the temperature in the mixing drum is set between degrees Celsius and degrees Celsius.

[0018] The advantages and positive effects of the present invention are: an oxygen-free mixing environment is formed by a special mixing device, and after adding the rubber compound, a rubber compound with an extremely low oxidation rate is obtained by high-speed mixing and stirring, so that the internal molecules of the rubber compound are less decomposed and reduced by oxidation, and the material can maintain a good practical life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2It is a schematic diagram of the structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0024] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0025] like Figure 1-3 As shown, the preparation method and processing device of an antioxidant mixed rubber according to the present invention include a frame structure 30, wherein square alloy support feet 10 are fixedly provided at the lower ends of the four corners of the frame structure 30 by bolts or welding, and symmetrical side end brackets 12 are fixedly provided on the frame structure 30 by bolts, and a hollow mixing cylinder 13 is fixedly provided between the side end brackets 12 by bolts, and a mixing shaft for mixing is rotatably provided in the mixing cylinder 13, and a support frame 19 is fixedly provided on the side of the frame structure 30, and a turbine worm reducer 18 is fixedly provided on the support frame 19, and the turbine worm reducer A driving motor 17 is fixedly provided on 18 for driving, and the output shaft of the turbine worm reducer 18 is used to drive the stirring shaft arranged in the mixing cylinder 13 to rotate. In addition, an opening is provided on the side of the mixing cylinder 13 for feeding, and two symmetrical hinged arms 25 are hinged on the outer side of the mixing cylinder 13, and a material port cover plate 20 for covering the feeding opening is fixed between the hinged arms 25. The mixing cylinder 13 is provided with an antioxidant feeding port 14 and a helium antioxidant supply port 16 which are connected to the interior thereof and are located on the upper side of the mixing cylinder 13, and a discharge port 23 for discharging is provided on the lower side of the mixing cylinder 13.

[0026] In an embodiment of an antioxidant mixed rubber preparation and processing device, a support foot triangular rib 11 is welded and fixed between the square alloy support foot 10 and the frame structure 30, and the support foot triangular rib 11 is used to improve the relative structural strength of the square alloy support foot 10 and the frame structure 30, thereby improving stability.

[0027] In an embodiment of an anti-oxidation mixed rubber preparation and processing device, a rubber buffer foot pad 24 is fixedly provided on the lower end surface of the square alloy support foot 10 to improve the shock absorption performance of the equipment.

[0028] In an embodiment of an antioxidant rubber compound preparation and processing device, an oxygen concentration monitor 15 extending into the mixing cylinder 13 and monitoring the oxygen concentration in the mixing cylinder 13 is fixedly provided on the mixing cylinder 13 .

[0029] In an embodiment of an antioxidant compound rubber preparation and processing device, an adjustable clamp ring 27 is fixedly provided on the rotating shaft 26 by bolts, and an agitator blade adjustment shaft 29 is fixedly provided at the tail end of the agitator blade 28 by bolts, and the agitator blade adjustment shaft 29 is inserted into the adjustable clamp ring 27.

[0030] In an embodiment of an antioxidant rubber compound preparation and processing device, the stirring blade adjustment shaft 29 is fixed to the adjustable clamp ring 27 by a set screw and its working radius length can be adjusted.

[0031] In an embodiment of an apparatus for preparing and processing an antioxidant mixed rubber, heating components are fixedly provided at both ends of the mixing cylinder 13 for heating the mixed rubber.

[0032] In an embodiment of an antioxidant rubber compound preparation and processing device, a pneumatic telescopic rod 22 is hingedly provided on the mixing cylinder 13, and the other end of the pneumatic telescopic rod 22 is hingedly connected to the front end of the hinged arm 25 to drive the material port cover plate 20 to flip and close.

[0033] A method for preparing an antioxidant rubber compound using an antioxidant rubber compound preparation processing device, firstly, the rubber compound raw material is put into the mixing cylinder 13 through the side opening of the mixing cylinder 13, then the material port cover 20 is closed and the lock 21 is locked, then the helium anti-oxygen supply port 16 is opened to inflate the mixing cylinder 13 for deoxygenation protection, then the drive motor 17 is started to rotate the rotating shaft 26 after deceleration through the turbine worm reducer 18, the rotation speed of the rotating shaft 26 is not less than the oxygen concentration monitor 15 revolutions per minute, and the temperature in the mixing cylinder 13 is set between 50 degrees Celsius and 65 degrees Celsius.

[0034] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A method for preparing an antioxidant rubber compound and a processing device thereof, characterized in that: The invention comprises a frame structure (30), wherein square alloy support feet (10) are fixedly provided at the lower ends of the four corners of the frame structure (30) by bolts or welding, and symmetrical side end brackets (12) are fixedly provided on the frame structure (30) by bolts, and a hollow mixing cylinder (13) is fixedly provided between the side end brackets (12) by bolts, and a mixing shaft for mixing is rotatably provided in the mixing cylinder (13), and a support frame (19) is fixedly provided on the side of the frame structure (30), and a worm gear reducer (18) is fixedly provided on the support frame (19), and a driving motor for driving is fixedly provided on the worm gear reducer (18). The invention relates to a mixing drum (17), wherein the output shaft of the turbine worm reducer (18) is used to drive the stirring shaft arranged in the mixing drum (13) to rotate. In addition, an opening is provided on the side of the mixing drum (13) for feeding materials. Two symmetrical hinged arms (25) are hingedly provided on the outer side of the mixing drum (13). A material port cover plate (20) for covering the material feeding opening is fixedly provided between the hinged arms (25). The mixing drum (13) is provided with an antioxidant feeding port (14) and a helium antioxidant gas supply port (16) which are connected to the interior of the mixing drum (13) and are located on the upper side of the mixing drum (13). A material discharge port (23) for discharging materials is provided on the lower side of the mixing drum (13).

2. The method for preparing an antioxidant rubber compound and the processing device thereof according to claim 1, characterized in that: A supporting foot triangular rib plate (11) is welded and fixed between the square alloy supporting foot (10) and the frame structure (30), and the supporting foot triangular rib plate (11) is used to improve the relative structural strength of the square alloy supporting foot (10) and the frame structure (30), thereby improving stability.

3. The method for preparing an antioxidant rubber compound and the processing device thereof according to claim 2, characterized in that: A rubber buffer foot pad (24) is fixedly provided on the lower end surface of the square alloy support foot (10) to improve the shock absorption performance of the equipment.

4. The method for preparing an antioxidant rubber compound and the processing device thereof according to claim 3, characterized in that: An oxygen concentration monitor (15) is fixedly provided on the mixing cylinder (13) and extends into the mixing cylinder (13) to monitor the oxygen concentration in the mixing cylinder (13).

5. The method for preparing an antioxidant rubber compound and the processing device thereof according to claim 4, characterized in that: An adjustable clamp ring (27) is fixedly provided on the rotating shaft (26) by means of bolts, and an agitator blade adjusting shaft (29) is fixedly provided at the rear end of the agitator blade (28) by means of bolts, and the agitator blade adjusting shaft (29) is inserted into the adjustable clamp ring (27).

6. The method for preparing an antioxidant rubber compound and the processing device thereof according to claim 5, characterized in that: The stirring blade adjustment shaft (29) is fixed to the adjustment clamp ring (27) via a set screw and its working radius length can be adjusted.

7. The method for preparing an antioxidant rubber compound and the processing device thereof according to claim 6, characterized in that: Heating components are fixedly provided at both ends of the mixing cylinder (13) for heating the mixed rubber.

8. The method for preparing an antioxidant rubber mix and the processing device thereof according to claim 7, characterized in that: The mixing cylinder (13) is hingedly provided with a pneumatic telescopic rod (22), and the other end of the pneumatic telescopic rod (22) is hingedly connected to the front end of the hinged arm (25) for driving the material port cover plate (20) to flip and close.

9. A method for preparing an antioxidant rubber compound using an antioxidant rubber compound preparation processing device, comprising: firstly, feeding a rubber compound raw material into the mixing drum (13) through the side opening of the mixing drum (13), then closing the material port cover (20) and locking the locker (21), then opening the helium anti-oxygen supply port (16) to inflate and deoxygenate the mixing drum (13) for protection, then starting the drive motor (17) to rotate the rotating shaft (26) after deceleration through the worm gear reducer (18), the rotating speed of the rotating shaft (26) is not less than the oxygen concentration monitor (15) revolutions per minute, and the temperature in the mixing drum (13) is set between (50) degrees Celsius and (65) degrees Celsius.

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