Internal mixer pyrolysis carbon black particle size treatment and feeding device

Abstract

The utility model relates to the technical field of pyrolysis carbon black treatment, and provides an internal mixer pyrolysis carbon black particle size treatment and feeding device which comprises a pyrolysis carbon black storage tank, an airflow crushing mechanism and an internal mixer, the airflow crushing mechanism comprises an airflow crushing bin, the airflow crushing bin is connected with a pyrolysis carbon black storage tank through a feeding pusher and connected with an air tank through a first pipeline, the upper portion of the airflow crushing bin is connected with a grading chamber, the top of the grading chamber is connected with the air tank through a second pipeline, and a grading machine is arranged in the grading chamber. The discharging end of the grader is connected with the feeding end of a cyclone separator, the discharging end of the cyclone separator is connected with the feeding ends of a plurality of particle size storage tanks through different electromagnetic valves, and the particle size storage tanks are connected with the internal mixer through different electromagnetic valves. According to the scheme, the cracking carbon black which is regularly and uniformly distributed can be obtained by adjusting the proportion of the particle size, so that the performance of the cracking carbon black is mastered, and the application value of the cracking carbon black is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pyrolysis carbon black treatment, and particularly relates to a device for treating the particle size of pyrolysis carbon black and feeding materials in a mixer. Background Technique

[0002] Globally, the accumulation of waste tires has become an increasingly serious environmental problem. Every year, hundreds of millions of waste tires are discarded or piled up, not only occupying a large amount of land resources, but also potentially causing fires, polluting soil and water bodies, posing a serious threat to the ecological environment. Therefore, how to effectively treat and utilize waste tires to reduce their negative impact on the environment has become a hot issue of global concern. For the treatment of waste tires, pyrolysis technology, as an environmentally friendly and resource-based method, has gradually received attention. Through high-temperature pyrolysis, rubber and other organic components in waste tires can be converted into valuable products such as pyrolysis oil, pyrolysis gas, and pyrolysis carbon black. Among them, pyrolysis carbon black, as an important by-product, has broad application potential in the fields of rubber, coatings, plastics, etc. due to its unique physical and chemical properties.

[0003] The particle size of carbon black used in tires generally ranges from 10 to 100 nm. The size and distribution of carbon black aggregate particles are important indicators affecting the performance of carbon black, and also directly affect other properties and service properties of carbon black.

[0004] Due to the influence of various factors during the pyrolysis process, such as pyrolysis temperature, heating rate, pyrolysis time, and the composition and properties of raw materials, the generated pyrolysis carbon black particles have uneven size distribution and are disorderly, making it difficult to control the performance of pyrolysis carbon black, and thus unable to meet the application requirements of pyrolysis carbon black in different fields. For example, small-particle-size pyrolysis carbon black can be used as a reinforcing filler for materials such as rubber. Due to its high specific surface area and strong compensation effect, it can effectively improve the mechanical properties of materials, such as strength, hardness, and wear resistance. Large-particle-size pyrolysis carbon black is mainly used to enhance the mechanical properties of industrial rubber products, such as improving wear resistance and tensile strength.

[0005] Therefore, how to control the particle size distribution of pyrolysis carbon black to make its distribution regular, so as to improve the product quality and performance stability, has become one of the important research directions of pyrolysis carbon black. Content of the Utility Model

[0006] To solve the problems in the background technique, the utility model proposes a device for treating the particle size of pyrolysis carbon black and feeding materials in a mixer, which can not only obtain pyrolysis carbon black with different particle sizes, but also obtain regularly distributed and uniformly distributed pyrolysis carbon black by adjusting the particle size ratio, thereby mastering the performance of pyrolysis carbon black and improving its application value.

[0007] To achieve the above purpose, the utility model adopts the following scheme:

[0008] A device for treating the particle size of pyrolytic carbon black and feeding it into a kneader. The device includes a pyrolytic carbon black storage tank, an air-flow crushing mechanism, and a kneader; the air-flow crushing mechanism includes an air-flow crushing chamber, which is connected to the pyrolytic carbon black storage tank through a feeding pusher. The air-flow crushing chamber is connected to an air tank through a first pipeline. Above the air-flow crushing chamber, there is a classification chamber, which is connected to the air tank through a second pipeline. A classifier is provided in the classification chamber. The discharging end of the classifier is connected to the feeding end of a cyclone separator. The discharging end of the cyclone separator is connected to the feeding ends of multiple particle size storage tanks through different first solenoid valves. The multiple particle size storage tanks are connected to the kneader through different second solenoid valves.

[0009] Furthermore, the air-flow crusher further includes an induced draft fan, which is connected to the top of the cyclone separator through a dust collector.

[0010] Furthermore, a screw rod is provided in the feeding pusher. The feeding end of the feeding pusher is connected to the discharging end of the pyrolytic carbon black storage tank, and the discharging end of the feeding pusher is connected to the feeding end of the air-flow crushing chamber.

[0011] Furthermore, a gravity sensor is provided on each particle size storage tank.

[0012] Furthermore, the classifier includes a fixed discharging pipe and a classification wheel. The fixed discharging pipe is fixedly arranged at the end of the classification chamber close to the cyclone separator. The classification wheel is rotatably connected to one end of the fixed discharging pipe away from the cyclone separator. There is a rotating gap between the classification wheel and the fixed discharging pipe. The pressure in the classification chamber is positive pressure.

[0013] Furthermore, the first pipeline is connected with multiple branch pipes, and the output end of each branch pipe is respectively connected to the air-flow crushing chamber through a nozzle.

[0014] The beneficial effects of the present utility model are as follows: According to different frequencies of the classifier, the pyrolytic carbon black with screened particle sizes can be stored in the corresponding particle size storage tanks. Before entering the kneader, the weight of the pyrolytic carbon black entering the kneader can be accurately obtained through the gravity sensors of the particle size storage tanks, so as to master the ratio of pyrolytic carbon black with different particle sizes, make its size and distribution regular, and further improve the use performance of pyrolytic carbon black and the stability of the quality and performance of its products.

[0015] In addition, due to the need for the rotation of the classification wheel, there is a rotating gap between the classification wheel and the fixed discharging pipe. The rotating gap is prone to accumulate pyrolytic carbon black particles. The device for treating the particle size and feeding uses an induced draft fan to make the whole device in a negative pressure state. The device introduces a second pipeline from the air tank to make the classification chamber in a positive pressure state, which can generate an air flow, facilitating the cleaning of impurities and dust, especially convenient for removing the pyrolytic carbon black particles remaining in the rotating gap. Description of the Drawings

[0016] Figure 1 The figure is a schematic structural diagram of a device for treating the particle size of cracked carbon black and feeding the same in a kneader of the present utility model.

[0017] Reference numerals in the figure: 1, cracked carbon black storage tank; 2, feeding pusher; 3, air jet milling chamber; 4, classification chamber; 5, cyclone separator; 6, particle size storage tank; 601, first solenoid valve; 602, second solenoid valve; 7, kneader; 8, gas tank; 801, first pipeline; 802, second pipeline; 9, dust collector; 10, induced draft fan; 11, fixed discharge pipe; 12, classification wheel. Detailed Embodiments

[0018] In order to make the present utility model clearer and more understandable, the following further detailed description of the present utility model is given in conjunction with the description of the drawings and embodiments. It should be understood that the embodiments given are only one of the implementation modes and do not represent all embodiments.

[0019] Combined with Figure 1 , this embodiment provides a device for treating the particle size of cracked carbon black and feeding the same in a kneader. The device includes a cracked carbon black storage tank 1, an air jet milling mechanism and a kneader 7; the air jet milling mechanism includes an air jet milling chamber 3, and the air jet milling chamber 3 is connected to the cracked carbon black storage tank 1 through a feeding pusher 2. The air jet milling chamber 3 is connected to a gas tank 8 through a first pipeline 801. A classification chamber 4 is connected above the air jet milling chamber 3. The classification chamber 4 is connected to the gas tank 8 through a second pipeline 802. A classifier is provided in the classification chamber 4, and the discharge end of the classifier is connected to the feeding end of a cyclone separator 5. The discharge end of the cyclone separator 5 is connected to the feeding ends of a plurality of particle size storage tanks 6 through different first solenoid valves 601. The plurality of particle size storage tanks 6 are connected to the kneader 7 through different second solenoid valves 602.

[0020] Specifically, the air jet mill further includes an induced draft fan 10, and the induced draft fan 10 is connected to the top of the cyclone separator 5 through a dust collector 9. A screw rod is provided in the feeding pusher 2. The feeding end of the feeding pusher 2 is connected to the discharge end of the cracked carbon black storage tank 1, and the discharge end of the feeding pusher 2 is connected to the feeding end of the air jet milling chamber 3. The first pipeline 801 is connected with a plurality of branch pipes, and the output end of each branch pipe is respectively connected to the air jet milling chamber 3 through a nozzle.

[0021] The cracked carbon black enters the feeding pusher 2 through the cracked carbon black storage tank 1. The feeding pusher 2 pushes the cracked carbon black into the airflow pulverizing chamber 3 through a threaded rod. The air tank 8 injects compressed air into the airflow pulverizing chamber 3 at high speed through multiple nozzles. The accelerated particles collide and pulverize each other at the intersection of the nozzles. The pulverized cracked carbon black moves to the classification chamber 4 with the upward airflow. Under the strong centrifugal force generated by the high-speed rotating classifier, the coarse and fine materials are separated. The particles meeting the particle size requirements enter the cyclone separator 5 through the classification inner cylinder of the classifier for collection, and the remaining particles fall back to the airflow pulverizing chamber 3. At this time, the solenoid valve connecting the particle size storage tank 6 and the cyclone separator 5 is opened. The cracked carbon black meeting the requirements enters the corresponding particle size storage tank 6 under the action of the cyclone separator 5. According to different classifier frequencies, cracked carbon black with different particle sizes can be screened out and stored in the corresponding particle size storage tanks 6 respectively.

[0022] The cracked carbon black with small particle size can be used as a reinforcing filler for materials such as rubber and plastics. Due to its high specific surface area and strong reinforcing effect, it can effectively improve the mechanical properties of materials, such as strength, hardness and wear resistance. While the cracked carbon black with large particle size is mainly used to enhance the mechanical properties of industrial rubber products due to its good dispersibility, such as improving wear resistance and tensile strength. Therefore, the properties of cracked carbon black with different particle sizes are different, and their application fields will also be different. As a preferred solution, each of the particle size storage tanks 6 is provided with a gravity sensor. In this embodiment, different particle sizes of cracked carbon black are stored and retrieved through multiple particle size storage tanks 6. Before entering the internal mixer 7, the weight of the cracked carbon black entering the internal mixer 7 can be accurately obtained through the gravity sensor of the particle size storage tank 6, so as to master the ratio of cracked carbon black with different particle sizes, make its size and distribution regular, and then improve the use performance of cracked carbon black and enhance the product quality and performance stability.

[0023] The classifier includes a fixed discharge pipe 11 and a classification wheel 12. The fixed discharge pipe 11 is fixedly arranged at the end of the classification chamber 4 close to the cyclone separator 5. The classification wheel 12 is rotatably connected to one end of the fixed discharge pipe 11 away from the cyclone separator 5. There is a rotating gap between the classification wheel 12 and the fixed discharge pipe 11. The pressure in the classification chamber 4 is positive pressure. Due to the need for the rotation of the classification wheel 12, there is a rotating gap between the classification wheel 12 and the fixed discharge pipe 11, and cracked carbon black particles are likely to accumulate in the rotating gap. The particle size processing and feeding device uses a blower 10 to keep the whole device in a negative pressure state all the time. As a preference, in this embodiment, a second pipeline 802 is introduced from the air tank 8 to make the inside of the classification chamber 4 in a positive pressure state to generate an air flow, which is convenient for cleaning impurities and dust, especially for cleaning the cracked carbon black particles remaining in the rotating gap.

[0024] The specific embodiments of the present utility model have been described in detail above in conjunction with the figures, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A kneader cracking carbon black particle size treatment and feeding device, characterized in that: The device includes a pyrolytic carbon black storage tank (1), a pneumatic grinding mechanism, and a mixer (7); the pneumatic grinding mechanism includes a pneumatic grinding chamber (3), the pneumatic grinding chamber (3) is connected to the pyrolytic carbon black storage tank (1) through a feeding pusher (2), the pneumatic grinding chamber (3) is connected to an air tank (8) through a first pipeline (801), a classification chamber (4) is connected above the pneumatic grinding chamber (3), the classification chamber (4) is connected to the air tank (8) through a second pipeline (802), a classifier is arranged in the classification chamber (4), the discharge end of the classifier is connected to the feeding end of a cyclone separator (5), and the discharge end of the cyclone separator (5) is connected to the feeding ends of a plurality of particle size storage tanks (6) through different first solenoid valves (601), and the plurality of particle size storage tanks (6) are connected to the mixer (7) through different second solenoid valves (602).

2. The size treatment and feeding device for cracked carbon black particle size of an internal mixer according to claim 1, wherein: The pneumatic grinder further includes an induced draft fan (10), and the induced draft fan (10) is connected to the top of the cyclone separator (5) through a dust collector (9).

3. The pelletizing and feeding device for treating the particle size of pyrolytic carbon black of a kneader according to claim 1, wherein: A screw rod is arranged in the feeding pusher (2), the feeding end of the feeding pusher (2) is connected to the discharge end of the pyrolytic carbon black storage tank (1), and the discharge end of the feeding pusher (2) is connected to the feeding end of the pneumatic grinding chamber (3).

4. A kneader cracking carbon black particle size treatment and feeding device according to claim 1, characterized in that: A gravity sensor is arranged on each of the particle size storage tanks (6).

5. The size treatment and feeding device for cracking carbon black particles of a kneader according to claim 1, wherein: The classifier includes a fixed discharge pipe (11) and a classification wheel (12), the fixed discharge pipe (11) is fixedly arranged at the end of the classification chamber (4) close to the cyclone separator (5), the classification wheel (12) is rotatably connected to one end of the fixed discharge pipe (11) away from the cyclone separator (5), a rotating gap is arranged between the classification wheel (12) and the fixed discharge pipe (11), and the pressure in the classification chamber (4) is positive pressure.

6. The size treatment and feeding device for cracked carbon black particle size of an internal mixer according to claim 1, characterized in that: The first pipeline (801) is connected with a plurality of branch pipes, and the output end of each branch pipe is respectively connected to the pneumatic grinding chamber (3) through a nozzle.

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