A wet masterbatch production line based on high-speed flow reaction

Abstract

The present invention discloses a wet masterbatch production line based on high-speed impingement reaction, which includes a mixing unit for mixing carbon black and latex and standing to obtain a granular rubber material; a dehydration unit for dehydrating the granular rubber material after standing to obtain a flocculent rubber material; a conveying and refining unit for conveying and refining the dehydrated flocculent rubber material to obtain a sheet rubber material; a cooling treatment unit for cooling the sheet rubber material after refining and folding and stacking; and a control unit for automatically controlling the mixing unit, the dehydration unit, the conveying and refining unit, and the cooling treatment unit. The present invention accurately controls the working state of the extrusion dehydration expansion drying integrated machine, so that the rubber material is stirred at a certain machine pressure and a certain speed, and generates heat at a certain shear speed, so as to achieve the energy reserve of temperature and pressure for the expansion and flashing of the rubber material. When the rubber material is discharged from the room, due to the sudden drop in pressure and temperature, the amount of water volatilization in the rubber material reaches the qualified index requirements.

Description

Technical Field

[0001] The invention relates to the technical field of rubber wet production lines, in particular to a wet masterbatch production line based on high-speed impingement reaction. Background Art

[0002] With the continuous progress of science and technology and the continuous development of materials science, the materials used by humans are also being updated and improved. Polymer materials and their products have occupied all areas, industries and departments in life. From a part of a space shuttle to a screw, polymer materials may be used. Rubber, as an important strategic material, is widely used in the fields of national economy, high-tech and national defense. However, due to its low strength, low modulus, poor wear resistance and fatigue resistance, and lack of practicality, most rubbers need to be filled with reinforcing agents. In the prior art, carbon black and white carbon black are widely used in rubber products as the main reinforcing agents. The preparation and application of emerging fillers / rubber composites including graphene, carbon nanotubes and carbon-carbon composites have also become a research hotspot.

[0003] Since the newly produced rubber often contains a large amount of water and a small amount of unpolymerized monomers, it needs to be dehydrated by extrusion. The screw of the extrusion dehydration expansion drying machine first squeezes out the water from the colloid, then squeezes the rubber out of the template hole, and finally cuts it. During the processing, the pressure inside the machine, the stirring speed, the shear speed, etc. will affect the final processing results. For the newly produced colloid, how to select these parameters is not a simple matter. Therefore, it is an urgent problem to make the water volatilization amount in the rubber meet the qualified index requirements. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the box-type transformer measurement and control device in the prior art cannot accurately control the amount of water volatilization of the rubber material in the extrusion dehydration expansion drying integrated machine.

[0005] In order to solve the above technical problems, the present invention provides a wet masterbatch production line based on high-speed impingement reaction, comprising:

[0006] A mixing unit, used for mixing carbon black and latex and allowing the mixture to stand to obtain a granular rubber compound;

[0007] A dehydration unit, connected after the mixing unit, is used to dehydrate the granular rubber material after standing to obtain a flocculent rubber material;

[0008] A conveying and refining unit is connected after the dehydration unit and is used to convey and refine the dehydrated flocculent rubber material to obtain flaky rubber material;

[0009] A cooling treatment unit, connected after the conveying and refining unit, is used to cool the refined sheet rubber material and fold and stack it;

[0010] The control unit is used to automatically control the mixing unit, the dehydration unit, the transporting and refining unit and the temperature-lowering treatment unit.

[0011] Further, the dehydration unit comprises:

[0012] Extrusion dehydration expansion drying machine, used for extrusion, dehydration, expansion and drying of rubber materials;

[0013] A weight detection device, arranged at the front end of the extrusion dehydration expansion drying machine, for detecting the weight of the rubber material before entering the extrusion dehydration expansion drying machine;

[0014] A moisture meter, arranged on the extrusion dehydration expansion drying integrated machine, for detecting the moisture content of the rubber material after being dehydrated by the extrusion dehydration expansion drying integrated machine;

[0015] The control unit comprises:

[0016] A collection module, connected to the weight detection device and the moisture meter, respectively, for collecting data detected by the weight detection device and the moisture meter;

[0017] A processing module, used for processing the detected data;

[0018] The control modules are respectively connected to the extrusion dehydration expansion drying integrated machines and are used to control the working state of the extrusion dehydration expansion drying integrated machines.

[0019] Furthermore, the acquisition module continues to collect the weight △G of the rubber material before entering the extrusion dehydration expansion drying machine, and the control module is used to control the working conditions of the extrusion dehydration expansion drying machine;

[0020] The processing module is used to set a preset weight value G0 of the rubber material, and the processing module sets a weight difference g1 of the first preset rubber material, a weight difference g2 of the second preset rubber material, a weight difference g3 of the third preset rubber material, and a weight difference g4 of the fourth preset rubber material, and g1<g2<g3<g4; the processing module is also used to set a first preset working condition matrix A1 (a1, b1, c1), a second preset working condition matrix A2 (a2, b2, c2), a third preset working condition matrix A3 (a3, b3, c3) and a fourth preset working condition matrix A4 (a4, b4, c4), wherein a1-a4 are the first to fourth preset machine pressures, and a1<a2<a3<a4, b1-b4 are the first to fourth preset stirring speeds, b1<b2<b3<b4, c1-c4 are the first to fourth preset shear speeds, and c1<c2<c3<c4;

[0021] According to the difference between the weight △G of the rubber material in the extrusion dehydration expansion drying machine and the preset weight value G0 of the rubber material, a preset working condition matrix A is selected as the working condition of the extrusion dehydration expansion drying machine;

[0022] When △G-G0≤g1, the first preset working condition matrix A1 is selected as the working condition of the extrusion dehydration expansion drying integrated machine;

[0023] When g1<△G-G0≤g2, the second preset working condition matrix A2 is selected as the working condition of the extrusion dehydration expansion drying machine;

[0024] When g2<△G-G0≤g3, the third preset working condition matrix A3 is selected as the working condition of the extrusion dehydration expansion drying machine;

[0025] When g3<△G-G0≤g4, the fourth preset working condition matrix A4 is selected as the working condition of the extrusion dehydration expansion drying machine;

[0026] Among them, when the i-th preset working condition matrix Ai is selected as the working condition of the extrusion dehydration expansion drying machine, the control module controls the extrusion dehydration expansion drying machine to operate at the i-th preset internal machine pressure ai, and the control module will also control the extrusion dehydration expansion drying machine to operate at the i-th preset stirring speed bi. At the same time, the control module will also control the extrusion dehydration expansion drying machine to operate at the i-th preset shear speed ci, i=1, 2, 3, 4.

[0027] Further, the processing module is also used to set a first preset water content T1 of the rubber material after dehydration by the extrusion dehydration expansion drying machine, a second preset water content T2 of the rubber material after dehydration by the extrusion dehydration expansion drying machine, a third preset water content T3 of the rubber material after dehydration by the extrusion dehydration expansion drying machine, and a fourth preset water content T4 of the rubber material after dehydration by the extrusion dehydration expansion drying machine, and T1<T2<T3<T4; the acquisition module is also used to set a first preset correction coefficient m1, a second preset correction coefficient m2, a third preset correction coefficient m3 and a fourth preset correction coefficient m4, and 1<m1<m2<m3<m4<1.3;

[0028] The acquisition module is also used to collect the water content △T of the rubber material after dehydration by the extrusion dehydration expansion drying machine. The acquisition module is also used to select the preset correction coefficient according to the relationship between the water content △T of the rubber material after dehydration by the extrusion dehydration expansion drying machine and each preset water content T of the rubber material after dehydration by the extrusion dehydration expansion drying machine when selecting the i-th preset working condition matrix Ai as the working condition of the extrusion dehydration expansion drying machine to correct the working conditions in the i-th preset working condition matrix Ai:

[0029] When △T≤T1, the working conditions in the i-th preset working condition matrix Ai are not modified;

[0030] When T1<△T≤T2, the first preset correction coefficient m1 is selected to correct Ai, and the corrected value is Ai(ai*m1, bi*m1, ci*m1);

[0031] When T2<△T≤T3, the second preset correction coefficient m2 is selected to correct Ai, and the corrected value is Ai(ai*m2, bi*m2, ci*m2);

[0032] When T3<△T≤T4, the third preset correction coefficient m3 is selected to correct Ai, and the corrected value is Ai(ai*m3, bi*m3, ci*m3);

[0033] When T4<ΔT, the fourth preset correction coefficient m4 is selected to correct Ai, and the corrected Ai is Ai(ai*m4, bi*m4, ci*m4).

[0034] Further, the mixing unit comprises:

[0035] Latex storage tank, used to store latex;

[0036] A carbon black slurry storage tank, used for storing carbon black slurry;

[0037] The composite static tank is connected to the latex storage tank and the carbon black slurry storage tank respectively, and is used for mixing the latex and the carbon black slurry and statically storing them.

[0038] Furthermore, a high-speed jet pump is provided at the discharge port of the carbon black slurry storage tank for high-speed jetting of the carbon black slurry into the composite static tank;

[0039] A low-speed injection pump is provided at the discharge port of the latex storage tank for injecting latex into the composite static tank at a low speed.

[0040] Furthermore, the dehydration unit further comprises:

[0041] A vibration dehydration screen is arranged before the extrusion dehydration expansion drying integrated machine and is used to remove free water attached to the rubber material by vibration;

[0042] The vibrating fluidized bed is arranged after the extrusion dehydration expansion drying integrated machine and is used to dry the rubber material by blowing air.

[0043] Furthermore, the vibrating fluidized bed comprises:

[0044] A hot air system, arranged on the vibrating fluidized bed, for assisting in drying the rubber material;

[0045] The cold air system is arranged on the vibrating fluidized bed and is used for cooling the rubber material.

[0046] Furthermore, the transport and refining unit comprises:

[0047] Belt conveyor, used to transport rubber;

[0048] A twin-screw extruder, arranged after the belt conveyor, is used to shear the rubber material into a twin-screw shape;

[0049] A screw conveyor, arranged after the twin-screw extruder, for conveying the sheared twin-screw rubber material;

[0050] The open mixing mill is arranged after the screw conveyor and is used for refining the twin-screw rubber material into a sheet-like rubber material.

[0051] Furthermore, the temperature reduction processing unit includes:

[0052] Water cooling device, used to cool the rubber material;

[0053] An air drying box, arranged after the water cooling device, is used to remove moisture from the rubber material;

[0054] The stacking machine is arranged after the air drying box and is used for stacking the rubber material with sheet structure.

[0055] Compared with the prior art, the wet masterbatch production line based on high-speed impingement reaction in the embodiment of the present invention has the following beneficial effects:

[0056] The mixing unit is used to mix carbon black and latex and let them stand to obtain granular rubber; the dehydration unit is used to dehydrate the granular rubber after standing to obtain flocculent rubber; the conveying and refining unit is used to convey and refine the dehydrated flocculent rubber to obtain sheet rubber; the cooling unit is used to cool the sheet rubber after refining and fold and stack it; the control unit is used to automatically control the mixing unit, the dehydration unit, the conveying and refining unit and the cooling unit. The present invention accurately controls the working state of the extrusion dehydration expansion drying machine, so that the rubber is stirred at a certain pressure in the machine, a certain speed, and generates heat at a certain shear speed, so as to achieve the energy reserve of temperature and pressure for the expansion and flash evaporation of the rubber. When the rubber is discharged from the room, due to the sudden drop in pressure and temperature, the amount of water volatilization in the rubber reaches the qualified index requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 1 is a structural schematic diagram of a wet masterbatch production line based on high-speed impingement reaction in an embodiment of the present invention;

[0058] Figure 2 Schematic diagram of the structure of a mixing unit of a wet masterbatch production line based on high-speed impingement reaction in an embodiment of the present invention;

[0059] Figure 3 Schematic diagram of the structure of a dehydration unit of a wet masterbatch production line based on high-speed impingement reaction in an embodiment of the present invention;

[0060] Figure 4 It is a schematic structural diagram of a conveying and refining unit of a wet masterbatch production line based on a high-speed impingement reaction in an embodiment of the present invention;

[0061] Figure 5 It is a schematic structural diagram of a cooling treatment unit of a wet masterbatch production line based on a high-speed impingement reaction in an embodiment of the present invention;

[0062] Figure 6 It is a schematic diagram of the connection of a control unit of a wet masterbatch production line based on high-speed impingement reaction in an embodiment of the present invention.

[0063] In the figure, 1. mixing unit; 2. dehydration unit; 3. conveying and refining unit; 4. cooling treatment unit; 5. latex storage tank; 6. carbon black slurry storage tank; 7. composite static tank; 8. high-speed jet pump; 9. low-speed jet pump; 10. vibration dehydration screen; 11. extrusion dehydration expansion drying machine; 12. vibration fluidized bed; 13. belt conveyor; 14. twin-screw extruder; 15. screw conveyor; 16. open mill; 17. water cooling device; 18. air drying box; 19. stacking machine; 20. weight detection device; 21. moisture meter; 22. hot air system; 23. cold air system; 24. control unit. DETAILED DESCRIPTION

[0064] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0065] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0066] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0067] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0068] like Figure 1-6, in an embodiment of the present application, a wet masterbatch production line based on high-speed impingement reaction is provided, comprising: a mixing unit 1, a dehydration unit 2, a conveying and refining unit 3, a cooling treatment unit 4 and a control unit 24, wherein the mixing unit 1 is used to mix carbon black and latex and let them stand to obtain a granular rubber material; the dehydration unit 2 is connected after the mixing unit 1, and is used to dehydrate the granular rubber material after standing to obtain a flocculent rubber material; the conveying and refining unit 3 is connected after the dehydration unit 2, and is used to convey and refine the dehydrated flocculent rubber material to obtain a flaky rubber material; the cooling treatment unit 4 is connected after the conveying and refining unit 3, and is used to cool the refined flaky rubber material and fold and stack it; the setting position of the control unit 24 can be installed according to actual needs, and is used to automatically control the mixing unit 1, the dehydration unit 2, the conveying and refining unit 3 and the cooling treatment unit 4.

[0069] Furthermore, by precisely controlling the working state of the extrusion dehydration expansion drying integrated machine 11, the rubber material is stirred at a certain internal pressure and rotation speed, and heat is generated at a certain shear speed, so as to achieve the energy reserve of temperature and pressure for expansion and flash evaporation of the rubber material. When the rubber material is discharged from the room, due to the sudden drop in pressure and temperature, the volatilization amount of water in the rubber material reaches the qualified index requirements.

[0070] In an embodiment of the present application, a wet masterbatch production line based on high-speed flow reaction is provided, wherein the dehydration unit 2 comprises:

[0071] An extrusion, dehydration, expansion and drying integrated machine 11 is used to perform extrusion, dehydration, expansion and drying treatments on the rubber material;

[0072] Specifically, when the extrusion dehydration expansion drying machine 11 is working, the motor is started, and the screw is driven to rotate through the coupling and the gear reducer. The rubber material from which most of the free water has been removed in the previous process is added from the feeding hopper and compressed by the conical screw section, so that part of the free water in the rubber material is discharged from the drainage screen into the water receiving box for recycling. With the continued push of the screw, the rubber enters the first straight barrel and the second straight barrel in turn. Under the combined effect of the shallow screw groove and the special design of the local spiral of the screw, the increasing compression ratio and the shear screw, the rubber is vigorously stirred and frictionally sheared to generate heat. At the same time, the variable frequency motor can properly adjust the pressure in the machine under speed regulation, thereby achieving uniform stirring, high heat generation and rapid temperature rise, achieving the energy reserve of temperature and pressure for expansion and flash evaporation of the rubber. When the rubber is discharged from the mold hole of the template mechanism into the indoor environment, the rubber is rapidly expanded and flashed due to the sudden drop in pressure and temperature, so that the volatilization of water in the rubber meets the qualified index requirements. The extrusion dehydration expansion drying all-in-one machine 11 can reduce the water content in the rubber to below 2%.

[0073] A weight detection device 20, arranged at the front end of the extrusion dehydration expansion drying machine 11, for detecting the weight of the rubber material before entering the extrusion dehydration expansion drying machine 11;

[0074] A moisture meter 21, which is arranged on the extrusion dehydration expansion drying integrated machine 11, and is used to detect the moisture content of the rubber material after being dehydrated by the extrusion dehydration expansion drying integrated machine 11;

[0075] Preferably, the moisture meter 21 is a rubber moisture meter, which can be widely used in all applications that require rapid determination of the moisture content of PP plastic, PE plastic, PVC plastic, PS plastic, PA plastic, PC plastic, PET plastic, PPS plastic, plastic additives, plastic raw materials, polystyrene acrylonitrile, polyamide, polypropylene, polycarbonate, plastic particles, plastic granules, plastic particles, and plastic granules, and has the following advantages: (1) small size, light weight, and simple structure; (2) not affected by the environment and humidity, and no auxiliary equipment is required; (3) simple operation, no installation and commissioning training is required; (4) high efficiency and fast speed, the overall operation does not exceed 10 minutes; (5) high precision, the electromagnetic force weighing sensor ensures the weighing accuracy (the international weighing system's sensor is more than one ten-thousandth of a part) Sensors all use electromagnetic force balance sensors); (6) Multiple analysis methods, fully automatic, timed, semi-automatic to meet various analysis methods; (7) Standard RS232 communication interface - convenient for connecting printers, computers and other peripheral devices, in line with FDA / HACCP format requirements; (8) Plastic moisture detector Plastic moisture meter 21 Ring quartz tungsten halogen infrared ring lamp heating method can directly heat from the inside of the material, greatly shortening the drying time, and also has the advantages of uniform heating, cleanliness, high efficiency and energy saving (tungsten halogen ring lamp is to inject iodine or bromine halogen gas into the infrared lamp. At high temperature, the sublimated tungsten filament reacts chemically with the halogen, and the sublimated tungsten will re-solidify on the tungsten filament to form a balanced cycle to avoid premature breakage of the tungsten filament. Therefore, tungsten halogen lamps are longer-lasting than ordinary infrared lamps).

[0076] The control unit 24 comprises:

[0077] A collection module, connected to the weight detection device 20 and the moisture meter 21, respectively, for collecting data detected by the weight detection device 20 and the moisture meter 21;

[0078] A processing module, used for processing the detected data;

[0079] The control modules are respectively connected to the extrusion dehydration expansion drying integrated machines 11 and are used to control the working state of the extrusion dehydration expansion drying integrated machines 11 .

[0080] In an embodiment of the present application, a wet masterbatch production line based on high-speed flow reaction is provided, wherein the acquisition module continues to collect the weight △G of the rubber material before entering the extrusion dehydration expansion drying integrated machine 11, and the control module is used to control the working conditions of the extrusion dehydration expansion drying integrated machine 11;

[0081] The processing module is used to set a preset weight value G0 of the rubber material, and the processing module sets a weight difference g1 of the first preset rubber material, a weight difference g2 of the second preset rubber material, a weight difference g3 of the third preset rubber material, and a weight difference g4 of the fourth preset rubber material, and g1<g2<g3<g4; the processing module is also used to set a first preset working condition matrix A1 (a1, b1, c1), a second preset working condition matrix A2 (a2, b2, c2), a third preset working condition matrix A3 (a3, b3, c3) and a fourth preset working condition matrix A4 (a4, b4, c4), wherein a1-a4 are the first to fourth preset machine pressures, and a1<a2<a3<a4, b1-b4 are the first to fourth preset stirring speeds, b1<b2<b3<b4, c1-c4 are the first to fourth preset shear speeds, and c1<c2<c3<c4;

[0082] According to the difference between the weight △G of the rubber material in the extrusion dehydration expansion drying machine 11 and the preset weight value G0 of the rubber material, a preset working condition matrix A is selected as the working condition of the extrusion dehydration expansion drying machine 11;

[0083] When △G-G0≤g1, the first preset working condition matrix A1 is selected as the working condition of the extrusion dehydration expansion drying integrated machine 11;

[0084] When g1<△G-G0≤g2, the second preset working condition matrix A2 is selected as the working condition of the extrusion dehydration expansion drying machine 11;

[0085] When g2<△G-G0≤g3, the third preset working condition matrix A3 is selected as the working condition of the extrusion dehydration expansion drying machine 11;

[0086] When g3<△G-G0≤g4, the fourth preset working condition matrix A4 is selected as the working condition of the extrusion dehydration expansion drying machine 11;

[0087] Among them, when the i-th preset working condition matrix Ai is selected as the working condition of the extrusion dehydration expansion drying machine 11, the control module controls the extrusion dehydration expansion drying machine 11 to operate at the i-th preset internal machine pressure ai, and the control module will also control the extrusion dehydration expansion drying machine 11 to operate at the i-th preset stirring speed bi. At the same time, the control module will also control the extrusion dehydration expansion drying machine 11 to operate at the i-th preset shear speed ci, i=1, 2, 3, 4.

[0088] Specifically, the working conditions of the extrusion dehydration expansion drying machine 11 are selected according to the difference between the weight of the rubber in the extrusion dehydration expansion drying machine 11 and the preset weight value of the rubber. The rubber is stirred at a certain pressure in the machine and a certain speed, and heat is generated at a certain shear speed, so that the volatilization amount of water in the produced rubber can meet the qualified index requirements.

[0089] In an embodiment of the present application, a wet masterbatch production line based on high-speed impingement reaction is provided, wherein the processing module is further used to set a first preset moisture content T1 of the rubber after dehydration by the extrusion dehydration swelling drying integrated machine 11, a second preset moisture content T2 of the rubber after dehydration by the extrusion dehydration swelling drying integrated machine 11, a third preset moisture content T3 of the rubber after dehydration by the extrusion dehydration swelling drying integrated machine 11, and a fourth preset moisture content T4 of the rubber after dehydration by the extrusion dehydration swelling drying integrated machine 11, and T1<T2<T3<T4; the acquisition module is further used to set a first preset correction coefficient m1, a second preset correction coefficient m2, a third preset correction coefficient m3, and a fourth preset correction coefficient m4, and 1<m1<m2<m3<m4<1.3;

[0090] The acquisition module is also used to collect the water content △T of the rubber material after dehydration by the extrusion dehydration expansion drying machine 11. The acquisition module is also used to select the preset correction coefficient according to the relationship between the water content △T of the rubber material after dehydration by the extrusion dehydration expansion drying machine 11 and each preset water content T of the rubber material after dehydration by the extrusion dehydration expansion drying machine 11 when selecting the i-th preset working condition matrix Ai as the working condition of the extrusion dehydration expansion drying machine 11 to correct the working conditions in the i-th preset working condition matrix Ai:

[0091] When △T≤T1, the working conditions in the i-th preset working condition matrix Ai are not modified;

[0092] When T1<△T≤T2, the first preset correction coefficient m1 is selected to correct Ai, and the corrected value is Ai(ai*m1, bi*m1, ci*m1);

[0093] When T2<△T≤T3, the second preset correction coefficient m2 is selected to correct Ai, and the corrected value is Ai(ai*m2, bi*m2, ci*m2);

[0094] When T3<△T≤T4, the third preset correction coefficient m3 is selected to correct Ai, and the corrected value is Ai(ai*m3, bi*m3, ci*m3);

[0095] When T4<ΔT, the fourth preset correction coefficient m4 is selected to correct Ai, and the corrected Ai is Ai(ai*m4, bi*m4, ci*m4).

[0096] Specifically, the working conditions of the extrusion dehydration expansion drying machine 11 are modified according to the relationship between the moisture content of the rubber after dehydration by the extrusion dehydration expansion drying machine 11 and each preset moisture content of the rubber after dehydration by the extrusion dehydration expansion drying machine 11, so as to ensure that the extrusion dehydration expansion drying machine 11 can work according to the set expectations, so as to achieve the final expected results and ensure that the produced rubber meets the index requirements.

[0097] In an embodiment of the present application, a wet masterbatch production line based on high-speed impingement reaction is provided, wherein the mixing unit 1 comprises:

[0098] The latex storage tank 5 is a 4.5m3 storage tank, and the latex storage tank 5 is used to store latex;

[0099] The carbon black slurry storage tank 6 is a 10.5 m3 storage tank, and the carbon black slurry storage tank 6 is used to store carbon black slurry;

[0100] The composite static tank 7 uses four 5.5m3 storage tanks, and the composite static tank 7 is connected to the latex storage tank 5 and the carbon black slurry storage tank 6 respectively, and is used to mix the latex and carbon black slurry and statically store them.

[0101] Specifically, a reactor chamber is provided in the middle of the composite standing tank 7 for composite reaction of carbon black slurry and latex, and a pneumatic valve is provided at the bottom of the composite standing tank 7 to control the outflow of the rubber material.

[0102] In an embodiment of the present application, a wet masterbatch production line based on high-speed impingement reaction is provided, wherein a high-speed jet pump 8 is provided at the discharge port of the carbon black slurry storage tank 6 for high-speed jetting of the carbon black slurry into the composite static tank 7;

[0103] A low-speed injection pump 9 is provided at the discharge port of the latex storage tank 5 for injecting latex into the composite static tank 7 at a low speed.

[0104] Specifically, the high-speed jet pump 8 and the low-speed jet pump 9 are plugged into a reactor chamber disposed in the middle of the composite static tank 7 to perform a counter-spraying of the two raw materials.

[0105] In an embodiment of the present application, a wet masterbatch production line based on high-speed impingement reaction is provided, and the dehydration unit 2 further includes:

[0106] A vibration dehydration screen 10 is arranged before the extrusion dehydration expansion drying integrated machine 11, and is used to remove free water attached to the rubber material by vibration;

[0107] Preferably, the vibrating dewatering screen 10 is a vibrating device with a screen, which can remove free water attached to the rubber material by vibration, and can remove more than 30% of the water in the rubber material.

[0108] The vibrating fluidized bed 12 is arranged behind the extrusion dehydration expansion drying integrated machine 11 and is used to dry the rubber material by blowing air.

[0109] Preferably, the vibration amplitude of the vibrating fluidized bed 12 is 14 mm, the frequency is 740 RPM, and the screen surface size is length×width=4000×600 mm; each vibrating fluidized bed 12 has 4 sets of independent isolation springs.

[0110] In an embodiment of the present application, a wet masterbatch production line based on high-speed impingement reaction is provided, wherein the vibrating fluidized bed 12 comprises:

[0111] A hot air system 22, arranged on the vibrating fluidized bed 12, for auxiliary drying of the rubber material;

[0112] Preferably, the air supply temperature of the hot air system 22 is 100°C to 110°C.

[0113] The cold air system 23 is arranged on the vibrating fluidized bed 12 and is used to cool the rubber material.

[0114] Preferably, the air supply temperature of the cold air system 23 is ≤10°C, which can reduce the temperature of the rubber material to below 50°C.

[0115] In an embodiment of the present application, a wet masterbatch production line based on high-speed impingement reaction is provided, wherein the conveying and refining unit 3 comprises:

[0116] Belt conveyor 13, used for conveying rubber material;

[0117] A twin-screw extruder 14 is arranged after the belt conveyor 13 and is used to shear the rubber material into a twin-screw shape;

[0118] Specifically, the twin-screw extruder 14 functions to shear the rubber material to break the molecular weight of the rubber material and reduce the Mooney viscosity of the rubber material, so that the rubber material is easy to be subsequently processed and used.

[0119] The screw conveyor 15 is arranged after the twin-screw extruder 14 and is used to convey the sheared twin-screw rubber material;

[0120] The open mixer 16 is arranged after the screw conveyor 15 and is used to refine the twin-screw rubber material into a sheet-like rubber material.

[0121] Preferably, the open mill 16 is a conical double open mill 16, which is used to convert the dried flocculent rubber material into a rubber sheet with a thickness of 10 mm and a width of 400 mm.

[0122] In an embodiment of the present application, a wet masterbatch production line based on high-speed impingement reaction is provided, wherein the cooling treatment unit 4 comprises:

[0123] A water cooling device 17 is used to cool the rubber material;

[0124] Preferably, the water cooling device 17 is configured to cool the rubber material by providing a water cooling tank and placing the rubber material into the water cooling tank.

[0125] The air drying box 18 is arranged after the water cooling device 17 and is used to remove moisture from the rubber material;

[0126] Preferably, the air drying box 18 removes moisture from the rubber material by air drying at room temperature.

[0127] The stacking machine 19 is arranged after the air drying box 18 and is used to stack the rubber material with sheet structure.

[0128] Specifically, the function of the stacking machine 19 is to fold the rubber material in sheet structure for easy stacking.

[0129] In summary, the embodiment of the present invention provides a wet masterbatch production line based on high-speed impingement reaction, which includes a mixing unit 1 for mixing carbon black and latex and letting them stand to obtain granular rubber; a dehydration unit 2 for dehydrating the granular rubber after standing to obtain flocculent rubber; a conveying and refining unit 3 for conveying and refining the dehydrated flocculent rubber to obtain sheet rubber; a cooling treatment unit 4 for cooling the sheet rubber after refining and folding and stacking; a control unit 24 for automatically controlling the mixing unit 1, the dehydration unit 2, the conveying and refining unit 3 and the cooling treatment unit 4. The present invention precisely controls the working state of the extrusion dehydration expansion drying integrated machine 11, so that the rubber is stirred at a certain internal pressure and a certain speed, and generates heat at a certain shear speed, so as to achieve the energy reserve of temperature and pressure for the expansion and flashing of the rubber. When the rubber is discharged from the room, due to the sudden drop in pressure and temperature, the amount of water volatilization in the rubber reaches the qualified index requirements.

[0130] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wet masterbatch production line based on high-speed flow reaction, characterized in that: include: A mixing unit, used for mixing carbon black and latex and allowing the mixture to stand to obtain a granular rubber compound; A dehydration unit, connected after the mixing unit, is used to dehydrate the granular rubber material after standing to obtain a flocculent rubber material; A conveying and refining unit is connected after the dehydration unit and is used to convey and refine the dehydrated flocculent rubber material to obtain flaky rubber material; A cooling treatment unit, connected after the conveying and refining unit, is used to cool the refined sheet rubber material and fold and stack it; A control unit, used for automatically controlling the mixing unit, the dehydration unit, the transport and refining unit, and the temperature reduction treatment unit; The dehydration unit comprises: Extrusion dehydration expansion drying machine, used for extrusion, dehydration, expansion and drying of rubber materials; A weight detection device, arranged at the front end of the extrusion dehydration expansion drying machine, for detecting the weight of the rubber material before entering the extrusion dehydration expansion drying machine; A moisture meter, arranged on the extrusion dehydration expansion drying integrated machine, for detecting the moisture content of the rubber material after being dehydrated by the extrusion dehydration expansion drying integrated machine; The control unit comprises: A collection module, connected to the weight detection device and the moisture meter, respectively, for collecting data detected by the weight detection device and the moisture meter; A processing module, used for processing the detected data; Control modules, respectively connected to the extrusion dehydration expansion drying integrated machine, for controlling the working state of the extrusion dehydration expansion drying integrated machine; The collection module continues to collect the weight △G of the rubber material before entering the extrusion dehydration expansion drying machine, and the control module is used to control the working conditions of the extrusion dehydration expansion drying machine; The processing module is used to set a preset weight value G0 of the rubber material, and the processing module sets a weight difference g1 of the first preset rubber material, a weight difference g2 of the second preset rubber material, a weight difference g3 of the third preset rubber material, and a weight difference g4 of the fourth preset rubber material, and g1<g2<g3<g4; the processing module is also used to set a first preset working condition matrix A1 (a1, b1, c1), a second preset working condition matrix A2 (a2, b2, c2), a third preset working condition matrix A3 (a3, b3, c3) and a fourth preset working condition matrix A4 (a4, b4, c4), wherein a1~a4 are the first to fourth preset machine pressures, and a1<a2<a3<a4, b1~b4 are the first to fourth preset stirring speeds, b1<b2<b3<b4, c1~c4 are the first to fourth preset shear speeds, and c1<c2<c3<c4; According to the difference between the weight △G of the rubber material in the extrusion dehydration expansion drying machine and the preset weight value G0 of the rubber material, a preset working condition matrix A is selected as the working condition of the extrusion dehydration expansion drying machine; When △G-G0≤g1, the first preset working condition matrix A1 is selected as the working condition of the extrusion dehydration expansion drying integrated machine; When g1<△G-G0≤g2, the second preset working condition matrix A2 is selected as the working condition of the extrusion dehydration expansion drying machine; When g2<△G-G0≤g3, the third preset working condition matrix A3 is selected as the working condition of the extrusion dehydration expansion drying machine; When g3<△G-G0≤g4, the fourth preset working condition matrix A4 is selected as the working condition of the extrusion dehydration expansion drying machine; Among them, when the i-th preset working condition matrix Ai is selected as the working condition of the extrusion dehydration expansion drying machine, the control module controls the extrusion dehydration expansion drying machine to work at the i-th preset internal machine pressure ai, and the control module will also control the extrusion dehydration expansion drying machine to work at the i-th preset stirring speed bi. At the same time, the control module will also control the extrusion dehydration expansion drying machine to work at the i-th preset shear speed ci, i=1, 2, 3, 4; The processing module is also used to set a first preset water content T1 of the rubber material after dehydration by the extrusion dehydration swelling drying machine, a second preset water content T2 of the rubber material after dehydration by the extrusion dehydration swelling drying machine, a third preset water content T3 of the rubber material after dehydration by the extrusion dehydration swelling drying machine, and a fourth preset water content T4 of the rubber material after dehydration by the extrusion dehydration swelling drying machine, and T1<T2<T3<T4; the acquisition module is also used to set a first preset correction coefficient m1, a second preset correction coefficient m2, a third preset correction coefficient m3 and a fourth preset correction coefficient m4, and 1<m1<m2<m3<m4<1.3; The acquisition module is also used to collect the water content △T of the rubber material after dehydration by the extrusion dehydration expansion drying machine. The acquisition module is also used to select the preset correction coefficient according to the relationship between the water content △T of the rubber material after dehydration by the extrusion dehydration expansion drying machine and each preset water content T of the rubber material after dehydration by the extrusion dehydration expansion drying machine when selecting the i-th preset working condition matrix Ai as the working condition of the extrusion dehydration expansion drying machine to correct the working conditions in the i-th preset working condition matrix Ai: When △T≤T1, the working conditions in the i-th preset working condition matrix Ai are not modified; When T1<△T≤T2, the first preset correction coefficient m1 is selected to correct Ai, and the corrected value is Ai(ai*m1, bi*m1, ci*m1); When T2<△T≤T3, the second preset correction coefficient m2 is selected to correct Ai, and the corrected Ai is Ai(ai*m2, bi*m2, ci*m2); When T3<△T≤T4, the third preset correction coefficient m3 is selected to correct Ai, and the corrected Ai is Ai (ai*m3, bi*m3, ci*m3); When T4<ΔT, the fourth preset correction coefficient m4 is selected to correct Ai, and the corrected Ai is Ai (ai*m4, bi*m4, ci*m4).

2. A wet masterbatch production line based on high-speed flow reaction according to claim 1, characterized in that: The mixing unit comprises: Latex storage tank, used to store latex; A carbon black slurry storage tank, used for storing carbon black slurry; The composite static tank is connected to the latex storage tank and the carbon black slurry storage tank respectively, and is used for mixing the latex and the carbon black slurry and statically storing them.

3. A wet masterbatch production line based on high-speed flow reaction according to claim 2, characterized in that: A high-speed jet pump is provided at the discharge port of the carbon black slurry storage tank for high-speed jetting of the carbon black slurry into the composite static tank; A low-speed injection pump is provided at the discharge port of the latex storage tank for injecting latex into the composite static tank at a low speed.

4. A wet masterbatch production line based on high-speed flow reaction according to claim 1, characterized in that: The dehydration unit also includes: A vibration dehydration screen is arranged before the extrusion dehydration expansion drying integrated machine and is used to remove free water attached to the rubber material by vibration; The vibrating fluidized bed is arranged after the extrusion dehydration expansion drying integrated machine and is used to dry the rubber material by blowing air.

5. A wet masterbatch production line based on high-speed flow reaction according to claim 4, characterized in that: The vibrating fluidized bed comprises: A hot air system, arranged on the vibrating fluidized bed, for assisting in drying the rubber material; The cold air system is arranged on the vibrating fluidized bed and is used for cooling the rubber material.

6. A wet masterbatch production line based on high-speed flow reaction according to claim 1, characterized in that: The transport and refining unit comprises: Belt conveyor, used to transport rubber; A twin-screw extruder, arranged after the belt conveyor, is used to shear the rubber material into a twin-screw shape; A screw conveyor, arranged after the twin-screw extruder, for conveying the sheared twin-screw rubber material; The open mixing mill is arranged after the screw conveyor and is used for refining the twin-screw rubber material into a sheet-like rubber material.

7. A wet masterbatch production line based on high-speed flow reaction according to claim 1, characterized in that: The temperature reduction processing unit comprises: Water cooling device, used to cool the rubber material; An air drying box, arranged after the water cooling device, is used to remove moisture from the rubber material; The stacking machine is arranged after the air drying box and is used for stacking the rubber material with sheet structure.

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