A rubber emulsion pipeline continuous flocculation device

Abstract

The application discloses a kind of rubber emulsion pipeline continuous flocculation equipment, belong to rubber emulsion flocculation equipment technical field, including rack, rack is fixedly installed with machine cylinder, flocculation mixing screw is rotatably installed in machine cylinder, flocculation mixing screw is inserted into and coaxially arranged with machine cylinder by the open end of machine cylinder, the hollow part is equipped in the open end of flocculation mixing screw close to machine cylinder, a plurality of through holes that communicate hollow part are equipped on flocculation mixing screw, the outer surface of the end of flocculation mixing screw away from hollow part is equipped with mixing spiral, rack is fixedly installed with flocculation liquid injection pipe, flocculation liquid injection pipe communicates hollow part, corresponding hollow part is equipped with liquid phase mixing barrel on machine cylinder, liquid phase mixing barrel communicates machine cylinder, corresponding mixing spiral position is equipped with discharge cylinder on machine cylinder, discharge cylinder connects dehydration drying device.The application solves the technical problems that current flocculation device is difficult to realize continuous production, and flocculation efficiency is low, and is widely applied in rubber emulsion flocculation.

Description

Technical Field

[0001] This invention belongs to the technical field of rubber latex flocculation equipment, and particularly relates to a continuous flocculation equipment for rubber latex pipelines. Background Technology

[0002] Traditional dry mixing is the main mixing process for preparing styrene-butadiene rubber (SBR) composites, but it causes fillers to be released into the air, causing environmental pollution and harming workers' health, making it not a green and environmentally friendly mixing process. Wet mixing of SBR latex can avoid filler dispersion and improve filler dispersibility, making it a research hotspot for scholars both domestically and internationally.

[0003] Flocculation is the process by which suspended particles in water or liquid aggregate and form flocs, thereby accelerating particle settling and achieving solid-liquid separation. This phenomenon or operation is called flocculation, and latex flocculation is a crucial process in wet mixing. Currently used flocculation equipment is difficult to achieve continuous production and has low flocculation efficiency.

[0004] Therefore, in the field of rubber latex flocculation equipment technology, there is still a need for research and improvement of continuous flocculation equipment for rubber latex pipelines. This is a research hotspot and focus in the current field of rubber latex flocculation equipment technology, and it is also the starting point for the completion of this invention. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide a continuous flocculation device for rubber latex pipelines, so as to solve the technical problem that current flocculation devices are difficult to achieve continuous production and have low flocculation efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a continuous flocculation device for rubber latex pipelines, comprising a frame, a cylinder fixedly installed on the frame, one end of the cylinder being sealed and the other end being open, a flocculation mixing screw driven by a first power device being rotatably installed inside the cylinder, the flocculation mixing screw extending into the open end of the cylinder and being coaxially arranged with the cylinder, a hollow part being provided near the open end of the cylinder, a plurality of through holes communicating with the hollow part being provided on the flocculation mixing screw, a mixing spiral being provided on the outer surface of the end of the flocculation mixing screw away from the hollow part, a flocculant injection pipe being fixedly installed on the frame, the flocculant injection pipe communicating with the hollow part, a liquid phase mixing cylinder being provided on the cylinder corresponding to the hollow part, the liquid phase mixing cylinder communicating with the cylinder, a discharge cylinder being provided on the cylinder corresponding to the position of the mixing spiral, and the discharge cylinder being connected to a dehydration and drying device.

[0007] As an improvement, the dehydration and drying device includes a conveying screw barrel connected to the discharge cylinder, a conveying screw driven by a second power device is rotatably installed inside the conveying screw barrel, and a rubber material outlet is provided at the end of the conveying screw barrel away from the discharge cylinder.

[0008] As a further improvement, the conveying screw is inclined, with the end of the conveying screw having the rubber outlet higher than the end of the conveying screw near the discharge cylinder.

[0009] As a further improvement, the inclination angle of the conveying screw is 20 degrees.

[0010] As a further improvement, a spray pipe is provided in the middle of the conveying screw cylinder, the spray pipe extends into the conveying screw cylinder, and a water outlet pipe is provided on the conveying screw cylinder, the water outlet pipe being positioned lower than the spray pipe.

[0011] As a further improvement, the flocculation mixing screw is provided with a number of spaced pins, which are located on the outer surface of the hollow part of the flocculation mixing screw.

[0012] After adopting the above technical solution, the beneficial effects of the present invention are:

[0013] In this embodiment of the invention, the rubber latex and silica dispersion enter the barrel through the liquid phase mixing cylinder, while the flocculant is injected under high pressure into the hollow section through the flocculant injection pipe and enters the barrel through the through hole on the flocculation mixing screw to mix with the rubber latex / silica mixture. The mixture is fully mixed by the mixing screw, realizing continuous flocculation of the rubber latex / silica mixture, which greatly improves the production efficiency.

[0014] Because a spray pipe is installed in the middle of the conveying screw, the masterbatch is dehydrated while being conveyed forward by the shearing and squeezing of the conveying screw, and clean water is sprayed from the spray pipe to remove impurities on the masterbatch, finally obtaining clean masterbatch, which ensures the continuity of production and further improves production efficiency.

[0015] Because the flocculation mixing screw has several spaced pins, the agglomerated silica particles are broken into smaller particles through the shearing and stirring of the pins on the flocculation mixing screw, so as to achieve uniform dispersion of silica in the rubber matrix, thereby improving flocculation efficiency and thus improving production efficiency. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the flocculation mixing screw in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the dehydration and drying device in an embodiment of the present invention;

[0021] In the diagram: 1. Frame, 2. Barrel, 3. Flocculation mixing screw, 301. Hollow section, 302. Through hole, 303. Mixing spiral, 304. Central channel, 4. First power unit, 5. Liquid phase mixing cylinder, 6. Flocculant injection pipe, 7. Pin, 8. Discharge cylinder, 9. Conveying cylinder, 10. Conveying screw, 11. Second power unit, 12. Spray pipe, 13. Abdominal box, 14. Water outlet pipe, 15. Rubber material outlet, 16. Rotary joint. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The terms used in this specification, such as "front," "back," "left," "right," "inner," "outer," and "middle," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of the invention.

[0024] like Figure 1 and Figure 2As shown, this invention provides a continuous flocculation device for rubber latex pipelines, including a frame 1. A cylinder 2 is fixedly installed on the frame 1. One end of the cylinder 2 is sealed and the other end is open. A flocculation mixing screw 3 driven by a first power device 4 is rotatably installed inside the cylinder 2. The first power device 4 is typically a combination of a motor and a reducer. The flocculation mixing screw 3 is connected to the first power device 4 via gear transmission, belt transmission, or chain transmission. The flocculation mixing screw 3 extends into the open end of the cylinder 2 and is coaxially arranged with the cylinder 2. A hollow part 301 is provided near the open end of the cylinder 2. The length of the hollow section 301 is approximately half the length of the flocculation mixing screw 3. Those skilled in the art can adjust the length of the hollow section 301 as needed. The flocculation mixing screw 3 has several through holes 302 connecting to the hollow section 301, allowing the barrel 2 and the hollow section 301 to communicate with each other. A mixing spiral 303 is provided on the outer surface of the end of the flocculation mixing screw 3 away from the hollow section 301. A flocculant injection tube 6 is fixedly installed on the frame 1, connecting to the hollow section 301. Specifically, the end of the flocculation mixing screw 3 extends beyond the open end of the barrel 2, and the end of the flocculation mixing screw 3... The machine has a central channel 304. A rotary joint 16 is installed at the end of the flocculation mixing screw 3. The injection port of the flocculant injection pipe 6 is connected to the rotary joint 16. A liquid phase mixing cylinder 5 is provided on the barrel 2 corresponding to the hollow part 301. The liquid phase mixing cylinder 5 is connected to the barrel 2. Several spaced pins 7 are provided on the flocculation mixing screw 3. The pins 7 are located on the outer surface of the hollow part 301 of the flocculation mixing screw 3. Rubber latex and silica dispersion enter the barrel 2 through the liquid phase mixing cylinder 5. Through the shearing and stirring of the pins 7 on the flocculation mixing screw 3, the agglomerated silica particles are broken into smaller particles. Smaller particles are used to achieve uniform dispersion of silica in the rubber matrix. Then, the flocculant is injected into the hollow part 301 of the flocculation mixing screw 3 under high pressure. The flocculant enters the barrel 2 through the through hole 302 on the flocculation mixing screw 3 and mixes with the rubber latex / silica mixture to achieve continuous flocculation of the rubber latex / silica mixture. The barrel 2 is equipped with a discharge cylinder 8 corresponding to the position of the mixing screw 303. The discharge cylinder 8 is usually located at the end of the mixing screw 303. The discharge cylinder 8 is connected to the dehydration and drying device. The flocculated masterbatch enters the downstream dehydration and drying device through the discharge cylinder 8.

[0025] Specifically, in order to ensure continuous production, such as Figure 3As shown, the dehydration and drying device includes a conveying screw barrel connected to the discharge cylinder 8. A conveying screw 10, driven by a second power unit 11, is rotatably installed inside the conveying screw barrel. The second power unit 11 is typically a combination of a motor and a reducer. The second power unit 11 and the conveying screw 10 are connected via chain drive, belt drive, or gear drive. A rubber outlet 15 is located at the end of the conveying screw barrel furthest from the discharge cylinder 8. The conveying screw barrel is inclined, with the end having the rubber outlet 15 higher than the end closest to the discharge cylinder 8. The inclination angle of the conveying screw barrel is 20 degrees, and the overall 20° inclination facilitates the removal of water from the flocculated masterbatch. The flocculated masterbatch enters the conveying screw barrel through the discharge cylinder 8, and is sheared and squeezed by the conveying screw 10 while being conveyed forward and dehydrated. The masterbatch reaches the rubber outlet 15 when it meets the humidity requirements.

[0026] A spray pipe 12 is located in the middle of the conveying screw, extending into the screw. A water outlet pipe 14 is located on the screw, positioned lower than the spray pipe 12. The masterbatch is conveyed forward and dehydrated simultaneously by the shearing and squeezing action of the conveying screw 10, while the spray pipe 12 sprays clean water to remove impurities, ultimately resulting in clean masterbatch. A belly box 13 is located on the side opposite the spray pipe 12. Several permeable holes are connected to the belly box 13, filtering out clean water and impurities. The masterbatch is then conveyed to the rubber outlet 15. The water outlet pipe 14 is located on the belly box 13, allowing the washed water and impurities to be discharged. The belly box 13 also serves as a buffer and storage unit.

[0027] In this embodiment of the invention, rubber latex and silica dispersion are first introduced into barrel 2 through liquid phase mixing cylinder 5. The shearing and stirring action of pins 7 on the flocculation mixing screw 3 breaks down the agglomerated silica particles into smaller particles, achieving uniform dispersion of silica in the rubber matrix. The flocculated liquid is injected under high pressure into the hollow section 301 through the flocculation injection pipe 6, and then enters barrel 2 through the through-hole 302 on the flocculation mixing screw 3, where it is mixed with the rubber latex / silica mixture. The mixture is then thoroughly mixed by the mixing screw 303, achieving continuous flocculation of the rubber latex / silica mixture. The flocculated masterbatch enters the downstream conveying cylinder 9 through the discharge cylinder 8. It is then sheared and squeezed by the conveying screw 10 while being dehydrated, and clean water is sprayed from the spray pipe 12 at the middle position to remove impurities from the masterbatch. The masterbatch reaches the rubber outlet 15 to meet the humidity requirements.

[0028] This invention enables continuous flocculation of rubber latex / fumed silica mixture, ultimately yielding masterbatch with satisfactory dryness. This achieves continuous production, high flocculation efficiency, and is widely used in rubber production.

[0029] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A continuous flocculation device for rubber latex pipelines, comprising a frame, characterized in that, A barrel is fixedly installed on the frame, with one end sealed and the other open. A flocculation mixing screw driven by a first power device is rotatably installed inside the barrel. The flocculation mixing screw extends into the barrel from the open end and is coaxially arranged with the barrel. The flocculation mixing screw has a hollow part near the open end of the barrel. The flocculation mixing screw has several through holes communicating with the hollow part. The flocculation mixing screw has several spaced pins, which are located on the outer surface of the hollow part of the flocculation mixing screw. A mixing spiral is provided on the outer surface of the end of the flocculation mixing screw away from the hollow part. A flocculant injection tube is fixedly installed on the frame and communicates with the hollow part. A liquid phase mixing cylinder is provided on the barrel corresponding to the hollow part and communicates with the barrel. A discharge cylinder is provided on the barrel corresponding to the position of the mixing spiral and is connected to a dehydration and drying device.

2. The continuous flocculation equipment for rubber latex pipelines according to claim 1, characterized in that, The dehydration and drying device includes a conveying screw barrel connected to the discharge cylinder, and a conveying screw driven by a second power device is rotatably installed inside the conveying screw barrel. The end of the conveying screw barrel away from the discharge cylinder is provided with a rubber material outlet.

3. The continuous flocculation equipment for rubber latex pipelines according to claim 2, characterized in that, The conveying screw is inclined, and the end of the conveying screw with the rubber material outlet is higher than the end of the conveying screw that is closer to the discharge cylinder.

4. The continuous flocculation equipment for rubber latex pipelines according to claim 3, characterized in that, The inclination angle of the conveying screw is 20 degrees.

5. The continuous flocculation equipment for rubber latex pipelines according to claim 4, characterized in that, A spray pipe is provided in the middle of the conveying screw cylinder, the spray pipe extends into the conveying screw cylinder, and a water outlet pipe is provided on the conveying screw cylinder, the water outlet pipe being positioned lower than the spray pipe.

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