Intelligent feeding device and method for producing low-soap emulsified antioxidant styrene-butadiene rubber

Abstract

The application discloses an intelligent feeding device and method based on low-soap emulsified antioxidant styrene-butadiene rubber production and relates to the technical field of rubber production. The intelligent feeding device comprises a mixing module, and a feeding mechanism is arranged above the mixing module to realize low-shear, impact-free and uniform dispersion of the antioxidant emulsion into the latex. The feeding mechanism comprises an antioxidant feeding unit arranged at the top of the mixing module. The antioxidant emulsion slowly penetrates into the latex in the form of extremely small droplets through the microporous tube in the antioxidant feeding unit, replacing the traditional mechanical stirring or high-pressure injection mode. The dispersion mode provided by the microporous tube hardly produces turbulent shear and high-speed impact, and the technical problem that the conventional mode causes the particle rupture and coalescence to form gel under the condition of low soap due to the strong shear force to destroy the thin emulsifier layer on the surface of the latex particles is solved from the root, thereby affecting the product quality and blocking the equipment.

Description

Technical Field

[0001] This invention relates to the field of rubber production technology, specifically to an intelligent feeding device and method for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants. Background Technology

[0002] In the production of styrene-butadiene rubber (SBR) with low-soap emulsification and antioxidants, the amount of emulsifier used is extremely low, resulting in a significant decrease in the stability of the latex system and making it highly sensitive to shear force, local concentration gradients, and temperature fluctuations. Antioxidants, as key additives, must be uniformly added to the main latex in emulsion form after polymerization or before degassing to prevent polymer oxidative degradation.

[0003] According to the patent titled "A Feeding Device for Styrene-Butadiene Rubber Production" (Patent Publication No.: CN222645064U, Patent Publication Date: 2025-03-21), the device includes a cylinder body and a first inlet. The first inlet is located on the top end face of the cylinder body. A conical screen plate is located inside the cylinder body below the first inlet. Multiple vibrating motors are evenly arranged along the circumference on the inner wall of the cylinder body below the conical screen plate. The output end of each vibrating motor is connected to a connecting plate, which is connected to the conical screen plate. A slag discharge pipe is located below the conical screen plate and is connected to the conical screen plate via an elastic pipe. A downwardly curved arc-shaped elastic plate is located on the outer surface of the slag discharge pipe on the inner circular surface of the cylinder body. Through the arrangement of the conical screen plate, the elastic scraper, the vibrating motors, and the arc-shaped elastic plate, various raw materials can not only be bonded and separated before feeding, but also efficiently dusted and slag-removed, effectively improving the molding quality of the rubber.

[0004] Based on the aforementioned existing technologies, current intelligent feeding devices and methods for producing styrene-butadiene rubber (SBR) based on low-soap emulsified antioxidants still have the following problems: conventional antioxidant addition methods often employ mechanical mixers, high-pressure nozzle atomization, or Venturi injectors. These devices generate strong turbulent shearing, high-speed impact, and localized eddies during operation. While this is acceptable for ordinary emulsion systems, under low-soap conditions, the emulsifier layer on the surface of latex particles is thin, and strong mechanical shearing easily disrupts latex stability, leading to latex particle breakage, aggregation, and the formation of gel blocks. These gels not only affect product quality but also adhere to pipe walls, valves, and downstream equipment, causing blockages and forcing frequent production shutdowns for cleaning. Therefore, this invention provides an intelligent feeding device and method for producing SBR based on low-soap emulsified antioxidants. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent feeding device and method for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants. This solves the problem that conventional methods such as mechanical stirring, high-pressure nozzle atomization, or Venturi spraying generate strong turbulent shearing, high-speed impact, and local eddies when adding antioxidants. These conditions can easily damage the stability of the extremely thin latex particles in the emulsifier layer under low-soap conditions, causing them to break down and form gels. This, in turn, affects product quality and causes blockages on pipe walls, valves, and other equipment, forcing frequent production shutdowns for cleaning.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants, comprising a mixing module, wherein a feeding mechanism is provided above the mixing module for achieving low-shear, non-impact, and uniformly dispersed injection of the antioxidant emulsion into the latex; the feeding mechanism includes: An antioxidant feeding unit is located at the top of the mixing module and includes a vertical pipe and a microporous pipe. The vertical pipe is fixedly installed at the top of the mixing module via a flange, and the microporous pipe is fixedly installed inside the vertical pipe. Through the micropores on the microporous pipe, the antioxidant emulsion slowly penetrates into the latex fed through the raw material feeding unit in the form of extremely small droplets, thereby achieving low-shear, non-impact, and uniformly dispersed injection of the antioxidant emulsion into the latex.

[0007] Preferably, the antioxidant feeding unit is provided with an adjustment component for adjusting the size of the micropores on the microporous tube, and a pressurization component is provided on the rear side of the antioxidant feeding unit for applying pressure to the antioxidant emulsion to enter the micropores of the microporous tube and flow out. The antioxidant feeding unit is provided with a backwashing component for backwashing the micropores inside the antioxidant feeding unit.

[0008] Preferably, the antioxidant feeding unit further includes a first storage tank fixedly installed on the top of the vertical pipe. A first outer shell is fixedly installed on the outside of the first storage tank, and a first heating wire is installed between the first storage tank and the first outer shell. A first heater is fixedly installed on the outside of the first outer shell, and one end of the first heating wire passes through the first outer shell and is fixedly connected to the first heater. A first cover plate is installed on the top of the first storage tank by means of a first rubber gasket and bolts.

[0009] Preferably, the adjustment component includes a rotating shaft rotatably installed inside the antioxidant feeding unit. An adjustment disc is fixedly installed at the bottom end of the rotating shaft, and the adjustment disc is rotatably installed on the top of the microporous tube through a rubber disc seal. By rotating the rotating shaft, the micropores on it coincide with and separate from the micropores on the microporous tube, thereby adjusting the size of the micropores on the microporous tube.

[0010] Preferably, the adjusting assembly further includes a worm gear fixedly mounted on the top surface of the rotating shaft, a bearing housing and a second motor fixedly mounted on the top of the first cover plate, a worm fixedly mounted on the output end of the second motor, and one end of the worm rotating inside the bearing housing, the worm meshing with the worm gear, and a top cover fixedly mounted on the top of the first cover plate for protecting the worm gear, the second motor, the worm and the bearing housing.

[0011] Preferably, the pressurizing assembly includes a mounting ring fixedly installed on the rear side of the first housing, a pressurizing pump fixedly installed inside the mounting ring, and a pressure delivery pipe fixedly installed at the top of the pressurizing pump, with one end of the pressure delivery pipe passing through the first cover plate and inserted into the interior of the first storage tank.

[0012] Preferably, the raw material feeding unit includes an inclined tube fixedly installed on the right side of the vertical tube, a mounting base fixedly installed at one end of the inclined tube, a shaft column rotatably installed inside the inclined tube, and a spiral blade fixedly installed on the surface of the shaft column. A first motor is fixedly installed on one side of the mounting base, and one end of the shaft column passes through the inclined tube and the mounting base and is fixedly connected to the first motor.

[0013] Preferably, a second storage hopper is fixedly installed on the top of the inclined tube, a second outer shell is fixedly installed on the outside of the second storage hopper, a second heating wire is fixedly installed between the second storage hopper and the second outer shell, a second heater is fixedly installed on the outside of the second outer shell, one end of the second heating wire passes through the second outer shell and is fixedly connected to the second heater, and a second cover plate is installed on the top of the second storage hopper by means of a second rubber gasket and bolts.

[0014] Preferably, the backwashing assembly includes a fixing plate fixedly installed on the rear side of the vertical pipe, a water pump fixedly installed on the top of the fixing plate, an inlet pipe fixedly installed at the input end of the water pump, and one end of the inlet pipe fixedly connected to the vertical pipe, an outlet pipe and a drain pipe fixedly installed on the front side of the vertical pipe, a second solenoid valve and a third solenoid valve fixedly installed at the end of the outlet pipe and the drain pipe near the vertical pipe, a first solenoid valve fixedly installed at the end of the inlet pipe near the vertical pipe, and a fourth solenoid valve fixedly installed at the bottom end of the second storage tank.

[0015] This invention also discloses an operation method for an intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants, comprising the following steps: S1: The latex is conveyed to the mixing module through the vertical pipe via the raw material feeding unit; S2: The antioxidant emulsion is fed into the microporous tube inside the vertical tube through the antioxidant feeding unit. The micropores on the microporous tube allow the antioxidant emulsion to slowly penetrate into the latex in the form of extremely small droplets, achieving low shear, no impact, and uniform dispersion injection. S3: The mixing module will further process the latex mixed with antioxidant emulsion.

[0016] This invention provides an intelligent feeding device and method for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants. Compared with the prior art, it has the following advantages: 1. This intelligent feeding device and method for producing styrene-butadiene rubber based on low-soap emulsified antioxidants utilizes a microporous tube in the antioxidant feeding unit. The microporous structure allows the antioxidant emulsion to slowly penetrate the latex in the form of extremely small droplets, replacing traditional mechanical stirring or high-pressure spraying methods. The dispersion method provided by the microporous tube generates almost no turbulent shearing or high-speed impact, fundamentally solving the technical problem that conventional methods, under low-soap conditions, cause strong shear forces to damage the thin emulsifier layer on the surface of latex particles, leading to particle breakage, aggregation, and gel formation, which in turn affects product quality and clogs the equipment.

[0017] 2. This intelligent feeding device and method for producing low-soap emulsified antioxidant styrene-butadiene rubber achieves active control of the micropore penetration process through an adjustable component and a pressurizing component. The second motor in the adjustable component drives a worm gear structure, causing the adjustable disc to overlap or separate from the micropores in the micropore tube, thereby precisely adjusting the micropore size to accommodate antioxidant emulsions of different viscosities. Simultaneously, the pressurizing pump in the pressurizing component applies controllable pressure to the inside of the first storage tank through a pressure delivery pipe, providing a stable driving force for emulsion penetration. The two components work together to ensure the stability and versatility of the low-shear injection process under different operating conditions. 3. This intelligent feeding device and method for producing styrene-butadiene rubber based on low-soap emulsified antioxidants solves the problem of potential clogging of micropores after long-term use through a backwashing component. When cleaning is required, the relevant solenoid valves switch pathways, the water pump starts, and external clean water is pumped into the vertical pipe through the inlet pipe. The water flows in reverse through the micropores of the microporous tube, flushing out residual antioxidants or impurities, which are then discharged through the outlet or drain pipe. This component allows for online cleaning without disassembling the equipment, significantly reducing equipment maintenance frequency and downtime, and ensuring long-term continuous and stable operation of the device. Attached Figure Description

[0018] Figure 1 This is a right-side perspective view of the present invention. Figure 2 This is a three-dimensional structural diagram of the feeding mechanism of the present invention; Figure 3 This is a partial cross-sectional bottom-view perspective view of the feeding mechanism of the present invention; Figure 4 This is a partial cross-sectional top view of the feeding mechanism of the present invention. Figure 5 This is a partial three-dimensional cross-sectional view of the feeding mechanism of the present invention; Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the adjustment component of the present invention; Figure 7 For the present invention Figure 6 Enlarged 3D structural diagram at point A; Figure 8 This is a three-dimensional cross-sectional view of the raw material feeding unit of the present invention; Figure 9 This is a left-side stereoscopic structural diagram of the present invention; Figure 10 This is a rear-view perspective structural diagram of the present invention.

[0019] In the diagram: 1. Mixing module; 2. Feeding mechanism; 21. Antioxidant feeding unit; 211. Vertical pipe; 212. Microporous tube; 213. First storage tank; 214. First outer shell; 215. First heating wire; 216. First heater; 217. First cover plate; 218. First rubber pad; 22. Raw material feeding unit; 221. Inclined tube; 222. Shaft; 223. Spiral blade; 224. Mounting base; 225. First motor; 226. Second storage tank; 227. Second rubber pad; 228. Second cover plate; 229. Second heating wire 2210. Second housing; 2211. Second heater; 3. Adjustment assembly; 31. Rotating shaft; 32. Adjustment disc; 33. Rubber disc; 34. Worm gear; 35. Second motor; 36. Worm; 37. Bearing seat; 38. Top cover; 4. Backwash assembly; 41. Fixing plate; 42. Water pump; 43. Inlet pipe; 44. Outlet pipe; 45. Drain pipe; 46. First solenoid valve; 47. Second solenoid valve; 48. Third solenoid valve; 49. Fourth solenoid valve; 5. Pressurization assembly; 51. Mounting ring; 52. Pressurization pump; 53. Pressure delivery pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-10 The present invention provides a technical solution: The intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants includes a mixing module 1. A feeding mechanism 2 is located above the mixing module 1 to achieve low-shear, non-impact, and uniform dispersion of the antioxidant emulsion into the latex. The feeding mechanism 2 includes: Antioxidant feeding unit 21 is located at the top of mixing module 1 and includes a vertical pipe 211 and a microporous pipe 212. The vertical pipe 211 is fixedly installed at the top of mixing module 1 by a flange, and the microporous pipe 212 is fixedly installed inside the vertical pipe 211. Through the micropores on the microporous pipe 212, the antioxidant emulsion slowly penetrates into the latex fed by the raw material feeding unit 22 in the form of extremely small droplets, so as to achieve low shear, no impact, and uniform dispersion of the antioxidant emulsion into the latex.

[0022] By utilizing the microporous structure on the microporous tube 212, the antioxidant emulsion is dispersed into extremely small droplets and penetrates into the latex, fundamentally avoiding the strong shear and high impact caused by traditional mechanical stirring or nozzle spraying. It is perfectly adapted to the characteristics of poor latex stability and sensitivity to shear force under low-soap emulsification system, effectively preventing gel formation and ensuring the purity of rubber products.

[0023] In this embodiment, the antioxidant feeding unit 21 is provided with an adjustment component 3 for adjusting the size of the micropores on the microporous tube 212, and a pressurizing component 5 is provided on the rear side of the antioxidant feeding unit 21 for applying pressure to the antioxidant emulsion to enter the micropores of the microporous tube 212 and flow out. The antioxidant feeding unit 21 is provided with a backwashing component 4 for backwashing the micropores inside the antioxidant feeding unit 21.

[0024] In this embodiment, the antioxidant feeding unit 21 further includes a first storage tank 213 fixedly installed on the top of the vertical pipe 211. A first outer shell 214 is fixedly installed on the outside of the first storage tank 213, and a first heating wire 215 is installed between the first storage tank 213 and the first outer shell 214. A first heater 216 is fixedly installed on the outside of the first outer shell 214, and one end of the first heating wire 215 passes through the first outer shell 214 and is fixedly connected to the first heater 216. A first cover plate 217 is installed on the top of the first storage tank 213 by means of a first rubber gasket 218 and bolts.

[0025] The first heater 216 preferably adopts an SHR-12 intelligent temperature-controlled electric heater. It uses a built-in PT100 platinum resistance temperature sensor to collect the temperature signal inside the first storage tank 213 in real time and feeds the signal back to the microcomputer controller. The controller adjusts the output power according to the deviation between the preset temperature value and the actual temperature value using a PID algorithm, driving the first heating wire 215 to generate heat. This achieves precise constant-temperature heating and insulation of the antioxidant emulsion inside the first storage tank 213, ensuring its fluidity and chemical stability. In this embodiment, the adjustment component 3 includes a rotating shaft 31 rotatably mounted inside the antioxidant feeding unit 21. An adjustment disc 32 is fixedly mounted at the bottom end of the rotating shaft 31, and the adjustment disc 32 is rotatably mounted on the top of the microporous tube 212 through a rubber disc 33. By rotating the rotating shaft 31, the micropores on it are made to coincide with and separate from the micropores on the microporous tube 212, thereby adjusting the size of the micropores on the microporous tube 212. The adjustment component 3 also includes a worm gear 34 fixedly mounted on the top surface of the rotating shaft 31. A bearing seat 37 and a second motor 35 are fixedly mounted on the top of the first cover plate 217. A worm 36 is fixedly mounted on the output end of the second motor 35, and one end of the worm 36 rotates inside the bearing seat 37. The worm 36 meshes with the worm gear 34. A top cover 38 is fixedly mounted on the top of the first cover plate 217 to protect the worm gear 34, the second motor 35, the worm 36, and the bearing seat 37.

[0026] The second motor 35 is a 57HS22 stepper motor. An adjustment assembly 3, consisting of a rotating shaft 31, an adjustment disk 32, a rubber disk 33, a worm gear 34, the second motor 35, and a worm 36, is used. Operators can precisely control the size of the effective micropores on the microporous tube 212 by using the second motor 35 to precisely drive the worm gear 34 and worm 36 (a self-locking transmission mechanism) according to the specific viscosity of the antioxidant emulsion or the required concentration. This design not only allows for adjustable droplet size but also ensures positional stability after adjustment, greatly improving the device's adaptability and control accuracy to different process parameters.

[0027] In this embodiment, the pressurizing component 5 includes a mounting ring 51 fixedly installed on the rear side of the first housing 214. A pressurizing pump 52 is fixedly installed inside the mounting ring 51, and a pressure delivery pipe 53 is fixedly installed at the top of the pressurizing pump 52. One end of the pressure delivery pipe 53 passes through the first cover plate 217 and is inserted into the interior of the first storage tank 213.

[0028] The pressure pump 52 is a miniature diaphragm air pump, model FM2002. A pressure assembly 5, including the pressure pump 52 and the pressure delivery pipe 53, is used to apply air pressure to the sealed first storage tank 213, providing a stable and controllable driving force for the microporous exudation of the antioxidant emulsion. This replaces the traditional method that relies on liquid level differences or high-viscosity pumping, ensuring that even low-viscosity emulsions can pass smoothly through the micropores, and allowing for precise matching of the exudation rate with the latex feed rate by adjusting the pressure, thus ensuring the stability of the mixing ratio.

[0029] In this embodiment, the raw material feeding unit 22 includes an inclined tube 221 fixedly installed on the right side of the vertical tube 211. A mounting base 224 is fixedly installed at one end of the inclined tube 221. A shaft 222 is rotatably installed inside the inclined tube 221, and a spiral blade 223 is fixedly installed on the surface of the shaft 222. A first motor 225 is fixedly installed on one side of the mounting base 224, and one end of the shaft 222 passes through the inclined tube 221 and the mounting base 224 and is fixedly connected to the first motor 225.

[0030] The first motor 225 is preferably a YE3 series high-efficiency three-phase asynchronous motor.

[0031] In this embodiment, a second storage tank 226 is fixedly installed on the top of the inclined tube 221, a second outer shell 2210 is fixedly installed on the outside of the second storage tank 226, a second heating wire 229 is fixedly installed between the second storage tank 226 and the second outer shell 2210, a second heater 2211 is fixedly installed on the outside of the second outer shell 2210, one end of the second heating wire 229 passes through the second outer shell 2210 and is fixedly connected to the second heater 2211, and a second cover plate 228 is installed on the top of the second storage tank 226 by means of a second rubber gasket 227 and bolts.

[0032] The second heater 2211 is the same as the first heater 216.

[0033] In this embodiment, the backwashing assembly 4 includes a fixing plate 41 fixedly installed on the rear side of the vertical pipe 211. A water pump 42 is fixedly installed on the top of the fixing plate 41. An inlet pipe 43 is fixedly installed at the input end of the water pump 42, and one end of the inlet pipe 43 is fixedly connected to the vertical pipe 211. An outlet pipe 44 and a drain pipe 45 are fixedly installed on the front side of the vertical pipe 211. A second solenoid valve 47 and a third solenoid valve 48 are fixedly installed at the end of the outlet pipe 44 and the drain pipe 45 near the vertical pipe 211. A first solenoid valve 46 is fixedly installed at the end of the inlet pipe 43 near the vertical pipe 211. A fourth solenoid valve 49 is fixedly installed at the bottom end of the second storage tank 226.

[0034] The water pump 42 is preferably a stainless steel horizontal centrifugal pump, model CHL2-20. The first solenoid valve 46, the second solenoid valve 47, the third solenoid valve 48, and the fourth solenoid valve 49 are all two-position, normally closed, direct-acting solenoid valves, model 2W025-08. A backwashing assembly 4 is installed, including the water pump 42, inlet pipe 43, outlet pipe 44, drain pipe 45, and multiple solenoid valves 46, 47, and 48. The effect is that, when maintenance is required, by controlling the switching combination of each solenoid valve, the water flow direction in the pipeline can be switched, causing the clean water pumped by the water pump 42 to flow in reverse through the micropores of the microporous tube 212 and the wall of the inclined tube 221. This design enables online automatic cleaning of the micropores and the inside of the pipes without disassembling any pipelines or equipment, effectively preventing micropore blockage caused by long-term operation, greatly extending the continuous production cycle, and reducing manual maintenance costs.

[0035] This invention also discloses an operation method for an intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants, comprising the following steps: S1: The latex is conveyed to the mixing module 1 through the vertical pipe 211 via the raw material feeding unit 22; S2: The antioxidant emulsion is fed into the microporous tube 212 inside the vertical tube 211 through the antioxidant feeding unit 21. The antioxidant emulsion is slowly penetrated into the latex in the form of extremely small droplets by the micropores on the microporous tube 212, so as to achieve low shear, no impact and uniform dispersion injection. S3: Mixing module 1 performs subsequent processing on the latex mixed with antioxidant emulsion.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] During operation, firstly, the antioxidant emulsion is fed into the first storage tank 213 through the feed inlet above the first cover plate 217, and the latex is fed into the second storage tank 226 through the feed inlet above the second cover plate 228. The first heater 216 operates to keep the antioxidant emulsion inside the first storage tank 213 warm through the first heating wire 215, and the second heater 2211 operates to keep the latex inside the second storage tank 226 warm through the second heating wire 229. Next, the fourth solenoid valve 49 is opened, and the latex enters the interior of the inclined tube 221. The first motor 225 runs and drives the shaft 222 and the spiral blade 223 to rotate. The spiral blade 223 drives the latex into the interior of the vertical tube 211. The second motor 35 runs and drives the worm 36 to rotate. The worm 36 drives the worm wheel 34 to rotate. The worm wheel 34 drives the rotating shaft 31 and the adjusting plate 32 to rotate. The micropores on the adjusting plate 32 are aligned with the micropores on the rubber plate 33 and the micropore tube 212 to adjust the size of the micropores. The pressure pump 52 runs and pressurizes the interior of the first storage tank 213 through the pressure delivery pipe 53. The pressure causes the antioxidant emulsion to slowly seep into the latex inside the vertical tube 211 in the form of extremely small droplets through the micropores inside the adjusting plate 32, the rubber plate 33 and the micropore tube 212. The latex with added antioxidant emulsion enters the interior of the mixing module 1. Finally, the fourth solenoid valve 49 closes, the third solenoid valve 48 opens, the second solenoid valve 47 closes, and the first solenoid valve 46 opens. The water pump 42 runs and delivers external clean water into the vertical pipe 211 through the inlet pipe 43. The clean water enters the micropores of the microporous pipe 212 and the inclined pipe 221 to clean them. The cleaned water is discharged through the outlet pipe 44. After cleaning, the water pump 42 stops running, the first solenoid valve 46, the third solenoid valve 48, and the fourth solenoid valve 49 close, the second solenoid valve 47 opens, and the remaining water is discharged through the drain pipe 45.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants, comprising a mixing module (1), characterized in that: The mixing module (1) is provided with a feeding mechanism (2) above it to achieve low-shear, non-impact, and uniformly dispersed injection of antioxidant emulsion into the latex. The feeding mechanism (2) includes: The antioxidant feeding unit (21) is located at the top of the mixing module (1) and includes a vertical pipe (211) and a microporous pipe (212). The vertical pipe (211) is fixedly installed at the top of the mixing module (1) by a flange, and the microporous pipe (212) is fixedly installed inside the vertical pipe (211). The antioxidant emulsion is slowly penetrated into the latex fed by the raw material feeding unit (22) in the form of extremely small droplets through the micropores on the microporous pipe (212), so as to realize the low shear, non-impact, and uniform dispersion of the antioxidant emulsion into the latex.

2. The intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants according to claim 1, characterized in that: The antioxidant feeding unit (21) is equipped with an adjustment component (3) for adjusting the size of the micropores on the microporous tube (212), and a pressurizing component (5) is provided on the rear side of the antioxidant feeding unit (21) for applying pressure to the antioxidant emulsion to enter the micropores of the microporous tube (212) and flow out. The antioxidant feeding unit (21) is equipped with a backwashing component (4) for backwashing the micropores inside the antioxidant feeding unit (21).

3. The intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants according to claim 2, characterized in that: The antioxidant feeding unit (21) further includes a first storage tank (213) fixedly installed on the top of the vertical pipe (211). A first outer shell (214) is fixedly installed on the outside of the first storage tank (213), and a first heating wire (215) is installed between the first storage tank (213) and the first outer shell (214). A first heater (216) is fixedly installed on the outside of the first outer shell (214), and one end of the first heating wire (215) passes through the first outer shell (214) and is fixedly connected to the first heater (216). A first cover plate (217) is installed on the top of the first storage tank (213) by means of a first rubber gasket (218) and bolts.

4. The intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants according to claim 3, characterized in that: The adjustment component (3) includes a rotating shaft (31) rotatably installed inside the antioxidant feeding unit (21). An adjustment disk (32) is fixedly installed at the bottom end of the rotating shaft (31), and the adjustment disk (32) is rotatably installed on the top of the microporous tube (212) through a rubber disk (33). By rotating the rotating shaft (31), the micropores on it are made to coincide with and separate from the micropores on the microporous tube (212), thereby adjusting the size of the micropores on the microporous tube (212).

5. The intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants according to claim 4, characterized in that: The adjustment assembly (3) also includes a worm gear (34) fixedly installed on the top surface of the rotating shaft (31). A bearing seat (37) and a second motor (35) are fixedly installed on the top of the first cover plate (217). A worm (36) is fixedly installed at the output end of the second motor (35), and one end of the worm (36) rotates inside the bearing seat (37). The worm (36) meshes with the worm gear (34). A top cover (38) is fixedly installed on the top of the first cover plate (217) to protect the worm gear (34), the second motor (35), the worm (36), and the bearing seat (37).

6. The intelligent feeding device and method for producing styrene-butadiene rubber based on low-soap emulsified antioxidants according to claim 2, characterized in that: The pressurizing assembly (5) includes a mounting ring (51) fixedly installed on the rear side of the first housing (214). A pressurizing pump (52) is fixedly installed inside the mounting ring (51), and a pressure delivery pipe (53) is fixedly installed at the top of the pressurizing pump (52). One end of the pressure delivery pipe (53) passes through the first cover plate (217) and is inserted into the interior of the first storage tank (213).

7. The intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants according to claim 1, characterized in that: The raw material feeding unit (22) includes an inclined tube (221) fixedly installed on the right side of the vertical tube (211). A mounting base (224) is fixedly installed at one end of the inclined tube (221). A shaft (222) is rotatably installed inside the inclined tube (221), and a spiral blade (223) is fixedly installed on the surface of the shaft (222). A first motor (225) is fixedly installed on one side of the mounting base (224), and one end of the shaft (222) passes through the inclined tube (221) and the mounting base (224) and is fixedly connected to the first motor (225).

8. The intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants according to claim 7, characterized in that: A second storage tank (226) is fixedly installed on the top of the inclined tube (221). A second outer shell (2210) is fixedly installed on the outside of the second storage tank (226). A second heating wire (229) is fixedly installed between the second storage tank (226) and the second outer shell (2210). A second heater (2211) is fixedly installed on the outside of the second outer shell (2210). One end of the second heating wire (229) passes through the second outer shell (2210) and is fixedly connected to the second heater (2211). A second cover plate (228) is installed on the top of the second storage tank (226) by means of a second rubber gasket (227) and bolts.

9. The intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants according to claim 8, characterized in that: The backwash assembly (4) includes a fixed plate (41) fixedly installed on the rear side of the vertical pipe (211). A water pump (42) is fixedly installed on the top of the fixed plate (41). An inlet pipe (43) is fixedly installed at the input end of the water pump (42), and one end of the inlet pipe (43) is fixedly connected to the vertical pipe (211). An outlet pipe (44) and a drain pipe (45) are fixedly installed on the front side of the vertical pipe (211). A second solenoid valve (47) and a third solenoid valve (48) are fixedly installed at the end of the outlet pipe (44) and the drain pipe (45) near the vertical pipe (211). A first solenoid valve (46) is fixedly installed at the end of the inlet pipe (43) near the vertical pipe (211). A fourth solenoid valve (49) is fixedly installed at the bottom end of the second storage tank (226).

10. An operating method for an intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants, comprising the intelligent feeding device for the production of styrene-butadiene rubber based on low-soap emulsified antioxidants as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: The latex is conveyed through the vertical pipe (211) to the inside of the mixing module (1) via the raw material feeding unit (22); S2: The antioxidant emulsion is fed into the microporous tube (212) inside the vertical tube (211) through the antioxidant feeding unit (21). The antioxidant emulsion is slowly penetrated into the latex in the form of extremely small droplets by the micropores on the microporous tube (212), so as to achieve low shear, no impact and uniform dispersion injection. S3: Mixing module (1) performs subsequent processing on latex mixed with antioxidant emulsion.

Images