A raw material mixing device for filler and natural latex mixing processing

Abstract

The application relates to the technical field of latex production equipment, in particular to a raw material mixing device for mixing fillers and natural latex, which comprises a supporting table and a mixing tank fixed on the supporting table; the mixing tank is provided with a sandwich layer on the outside, the sandwich layer is provided with a flow guide mechanism, a stirring mechanism is further arranged in the mixing tank, a driving lifting mechanism for driving the stirring mechanism to rotate in the circumferential direction and move up and down is arranged on the upper side of the mixing tank; wherein the stirring mechanism is further provided with a central cooling mechanism, the central cooling mechanism is arranged in the stirring mechanism, heat is transferred from the internal core area of the material to the outside, the external cooling of the sandwich layer forms a synergistic effect, the radial temperature gradient in the tank is significantly reduced, the overall temperature of the material is kept in an ideal range, the excessive activity of the Brownian motion of particles is effectively inhibited, the fillers and the reaction agent are uniformly distributed in the latex, and finally the product quality stability of the mixed rubber is improved.

Description

Technical Field

[0001] This invention relates to the field of latex production equipment technology, and in particular to a raw material mixing device for the compounding and processing of fillers and natural rubber latex. Background Technology

[0002] In the wet mixing process of filler and natural latex, reinforcing agents (such as carbon black, silica, and other filler particles), natural latex, and other reaction aids need to be added to a mixing tank and thoroughly stirred to form a raw material mixture for subsequent acid coagulation reactions. Currently, the reinforcing agents and reactants used are mostly micron or nano-sized particles. During the stirring process, the intense friction between the stirring blades and the materials, as well as between the particles, generates a large amount of heat, causing a significant increase in the temperature of the mixed slurry.

[0003] Increased temperature exacerbates the Brownian motion of filler particles, leading to excessive particle diffusion and uncontrolled particle movement, which in turn reduces the uniformity of filler distribution in the latex. This problem is further amplified in subsequent coagulation processes, causing uneven distribution of reinforcing agents and reactants, ultimately making it difficult to maintain consistent mechanical properties and quality stability in the compounded rubber product.

[0004] To control the mixing temperature, existing technologies typically involve installing a jacket on the outside of the mixing tank and circulating cooling water into the jacket to maintain the temperature at around 10-15°C. However, this single external jacket cooling method has significant drawbacks: cooling can only transfer heat from the outside in, resulting in the highest temperature in the central region of the tank, creating a radial temperature gradient of external cold and internal heat. Furthermore, the Brownian motion of particles in the central region remains difficult to suppress effectively.

[0005] Therefore, there is an urgent need for a raw material mixing device that can achieve uniform and precise temperature control to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies where Brownian motion of particles in the central region is still difficult to suppress effectively, and to propose a raw material mixing device for the compounding and processing of fillers and natural rubber latex.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: Design a raw material mixing device for the compounding and processing of fillers and natural rubber latex, including a support platform and a mixing tank fixed on the support platform; The mixing tank has an outer layer, in which a flow guiding mechanism is disposed. Inside the mixing tank, a stirring mechanism is also disposed. On the upper side of the mixing tank, a driving lifting mechanism is disposed to drive the stirring mechanism to rotate circumferentially and move up and down. The stirring mechanism also includes a central cooling mechanism.

[0008] Furthermore, the flow guiding mechanism includes; Several dividing ribs distributed along the circumference of the interlayer; A flow channel is constructed between every two partitions, and baffles are successively staggered on the end faces of the two opposing partitions. Each baffle in each flow channel constructs a continuously bent flow channel structure.

[0009] Furthermore, the stirring mechanism includes; Rotary connection to the shaft on the mixing tank; Furthermore, the shaft moves up and down along the middle of the mixing tank, and several fixing rings are fixedly installed below the shaft, with stirring blades distributed around the outer circumference of the fixing rings.

[0010] Furthermore, the drive lifting mechanism includes; The motor is fixedly installed above the mixing tank by a support frame; The motor shaft end and the shaft rod are movably inserted and circumferentially locked.

[0011] Furthermore, the drive lifting mechanism also includes; A worm gear is fixedly installed on the end of the motor shaft. A frame is fixedly installed inside the support frame. A worm wheel is rotatably connected inside the frame. A lifting ring is fixedly installed on the upper end of the shaft. A ring groove is opened on the outer side of the lifting ring. A lifting structure for driving the lifting ring to move up and down is also provided on the outer side of the frame.

[0012] Furthermore, the lifting structure includes; The lifting arms are rotatably connected to both sides of the frame. The ends of the lifting arms are rotatably connected to guide wheels, which are rotatably connected inside the annular groove. An eccentric plate is fixedly installed at the shaft end of the worm gear. A connecting rod is rotatably connected to the shaft end of the eccentric plate, and the other end of the connecting rod is rotatably connected to the middle of the lifting arm.

[0013] Furthermore, the central cooling mechanism includes; Water channels and air channels formed inside the shaft; The fixed ring has an internally formed extended water channel and an extended air channel that communicate with the stirring blade, and the extended water channel and the extended air channel are respectively connected to the water channel and the air channel.

[0014] Furthermore, an inflation mechanism is also provided inside the frame; The inflation mechanism includes a sealing sleeve fixedly installed in the frame, a sliding frame slidably connected inside the frame, a piston rod fixedly installed at the bottom of the sliding frame, a first piston slidably installed at the end of the piston rod inside the frame, and a spring fixedly installed between the sliding frame and the sealing sleeve. The worm gear shaft end is also fixedly fitted with an abutting protrusion that abuts against the sliding frame.

[0015] Furthermore, a water tank is fixedly installed inside the upper part of the support frame, and a second piston is fixedly installed on the outer side of the shaft, with the second piston being movably connected inside the water tank.

[0016] Furthermore, two rotary joints are provided on the outer side of the shaft, and the two rotary joints are respectively connected to the water channel and the air channel.

[0017] The present invention proposes a raw material mixing device for the compounding of fillers and natural rubber latex. The beneficial effects are as follows: By setting a central cooling mechanism inside the stirring mechanism, the present invention realizes heat transfer from the core area inside the material to the outside, which works synergistically with the external cooling of the jacket, significantly reducing the radial temperature gradient inside the tank, keeping the overall temperature of the material within an ideal range, thereby effectively suppressing the excessive Brownian motion of particles, ensuring that the fillers and reactants are evenly distributed in the latex, and ultimately improving the product quality stability of the compounded rubber. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a cross-sectional view of the mixing tank of the present invention; Figure 4 This is a schematic diagram of the flow guiding mechanism of the present invention; Figure 5 This is a schematic diagram of the stirring mechanism of the present invention; Figure 6 This is a schematic diagram of the central cooling mechanism of the present invention; Figure 7 This is a schematic diagram of the drive lifting mechanism of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the drive lifting mechanism of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the inflation mechanism of the present invention; Figure 10 This is a schematic diagram of the water tank structure of the present invention.

[0019] In the diagram: 1. Support platform; 2. Mixing tank; 20. Jacket; 3. Flow guiding mechanism; 31. Dividing rib; 32. Flow guiding channel; 33. Baffle plate; 4. Stirring mechanism; 41. Shaft; 42. Fixing ring; 43. Stirring blade; 5. Drive lifting mechanism; 50. Support frame; 51. Motor; 52. Worm gear; 53. Frame; 54. Worm wheel; 55. Lifting ring; 56. Ring groove; 57. Lifting arm; 571. Guide wheel; 58. Eccentric plate; 59. Connecting rod; 6. Central cooling mechanism; 61. Water channel; 62. Air duct; 63. Extended water channel; 64. Extended air duct; 7. Inflating mechanism; 71. Sealing sleeve; 72. Sliding frame; 73. Piston rod; 74. First piston; 75. Spring; 76. Abutting protrusion; 8. Water tank; 81. Second piston; 9. Rotary joint. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Reference Figures 1-10 As an embodiment of the present invention, a raw material mixing device for the compounding and processing of fillers and natural rubber latex is disclosed. The mixing device is mainly used to uniformly mix reinforcing agents, natural rubber latex and other reaction aids during the wet compounding process, and to precisely control the material temperature during the mixing process, thereby suppressing the problem of uneven distribution of filler particles due to excessive Brownian motion, and ensuring the consistency of product performance in the subsequent solidification process. Specifically, the mixing device includes a support platform 1 and a mixing tank 2 fixed on the support platform 1; see reference. Figure 1 The support platform 1 is a staircase structure, comprising an elevated installation platform and steps connecting to the ground. The mixing tank 2 is fixedly installed on the elevated installation platform, placing the mixing tank 2 entirely in an elevated position. The bottom of the mixing tank 2 has a discharge port that extends downwards through the elevated installation platform, ultimately located in the space below the platform. This arrangement facilitates operators accessing the platform via the staircase structure to perform daily operation, maintenance, and repair of the top feeding port of the mixing tank 2, the drive lifting mechanism 5, and various pipeline interfaces. Furthermore, the discharge port at the bottom of the mixing tank 2 extending to the lower side of the platform provides ample operating space for the arrangement of the discharge pipeline and the placement of subsequent receiving containers, while utilizing gravity for natural discharge reduces conveying energy consumption. In this embodiment, a weighing module is provided between the top mounting plane of the support platform 1 and the bottom lug of the mixing tank 2. The weighing module is used to detect the weight change of the material in the mixing tank 2 in real time, thereby accurately controlling the amount of filler, natural latex and other additives added.

[0022] Specifically, the weighing module includes at least three weighing sensors evenly distributed circumferentially along the bottom of the mixing tank; the three-point or four-point support layout can effectively offset the measurement error caused by the eccentric load of the mixing tank 2, ensuring weighing accuracy; the weighing sensor adopts a column-type or spoke-type structure, and its bottom is fixed to the mounting plane of the support platform 1 by bolts, and its top pressure head rigidly abuts against the lug at the bottom of the mixing tank 2.

[0023] The mixing tank 2 has an outer layer 20, in which a flow guiding mechanism 3 is disposed. The layer 20 is used to introduce a cooling medium to cool the material inside the mixing tank 2 from the outside. The flow guiding mechanism 3 can force the cooling medium to flow in the interlayer 20 along a predetermined path. Inside the mixing tank 2, a stirring mechanism 4 is also provided. On the upper side of the mixing tank 2, a drive lifting mechanism 5 is provided to drive the stirring mechanism 4 to rotate circumferentially and move up and down. The stirring mechanism 4 is equipped with a central cooling mechanism 6, which cools the material from the central area of ​​the mixing tank 2. Since the heat generated during stirring is mainly concentrated around the stirring blades and the central area of ​​the tank, traditional jacket cooling is insufficient to quickly remove the central heat, easily leading to excessively high tank core temperature. This, in turn, exacerbates Brownian motion of the particles, resulting in uncontrolled filler distribution. This invention, by incorporating a central cooling mechanism 6 within the stirring mechanism 4, achieves heat transfer from the core area of ​​the material outwards. This synergistic effect with the external cooling of the jacket 20 significantly reduces the radial temperature gradient within the tank, maintaining the overall material temperature within an ideal range. This effectively suppresses excessive Brownian motion of the particles, ensuring uniform distribution of fillers and reactants in the latex, ultimately improving the product quality stability of the compound.

[0024] In summary, this embodiment achieves uniform cooling of the tank periphery through the flow guiding mechanism 3 within the jacket 20, enhances the mixing effect by driving the lifting mechanism 5 to achieve the compound motion of the stirring mechanism 4, and solves the heat dissipation problem of the tank core through the central cooling mechanism 6. The three work together to form an efficient, uniform, and controllable raw material mixing device, which is particularly suitable for the temperature-sensitive filler-natural latex wet mixing process.

[0025] Reference Figure 4 In some embodiments, the flow guiding mechanism 3 of the present invention includes; A plurality of dividing ribs 31 are distributed around the circumference of the interlayer 20; A flow channel 32 is constructed between every two partition ribs 31, which serves as the basic path for the cooling medium to flow axially along the tank. Each flow channel 32 has an independent inlet and outlet, allowing the cooling medium to flow in and out in segments and independently, thereby preventing uneven temperature distribution caused by circumferential flow of the cooling medium. Furthermore, baffles 33 are sequentially and staggered on the end faces of the two opposing partition ribs 31, and each baffle 33 in each flow channel 32 constructs a continuously bent flow channel structure.

[0026] Specifically, due to the staggered arrangement of the baffles 33, each baffle 33 in each guide channel 32 constructs a continuously bent flow channel structure. When the cooling medium flows along the guide channel 32, it will be blocked and guided by the baffles 33 on the left and right sides in turn, and will be forced to continuously change its flow direction, forming an "S"-shaped or serpentine bend flow channel that repeatedly impacts the wall. The continuous bend flow channel forces the cooling medium to change direction continuously, which destroys the formation of the laminar boundary layer, keeps the medium in a turbulent state, and greatly improves the convective heat transfer coefficient. Furthermore, in traditional jacketed cooling media, when the cooling medium flows in a straight axial direction, the inlet temperature is low and the outlet temperature is high, forming an axial temperature gradient. In this design, however, the medium is violently agitated within the bend in the flow channel, resulting in thorough mixing and uniform temperature rise along the flow path, effectively suppressing the phenomenon of lower cooling and upper heating. At the same tank height, the bend in the flow channel significantly extends the actual flow path of the medium, increasing the heat exchange time and improving cooling efficiency.

[0027] Reference Figure 5 In an optional embodiment, the stirring mechanism 4 of the present invention includes; Rotary shaft 41 connected to the mixing tank 2; Furthermore, the shaft 41 moves up and down along the middle of the mixing tank 2, and several fixing rings 42 are fixedly installed below the shaft 41, with stirring blades 43 distributed around the outer circumference of the fixing rings 42.

[0028] In this embodiment, the lifting and lowering motion of the shaft 41 is driven by the lifting mechanism 5, which enables the stirring blade 43 to reciprocate at different heights in the mixing tank 2, effectively preventing the filler particles from settling or separating. At the same time, in conjunction with the central cooling mechanism 6 described later, the material in the tank is allowed to fully contact the cooling interface during flow, further improving temperature uniformity.

[0029] Reference Figure 7 , Figure 8 Based on the above embodiments, the drive lifting mechanism 5 in this embodiment includes: The motor 51 is fixedly installed above the mixing tank 2 via the support frame 50; The shaft end of the motor 51 and the shaft rod 41 are movably connected and circumferentially locked. Specifically, the shaft end of the motor 51 is provided with an internal spline or a square hole, and the upper section of the shaft rod 41 is provided with a matching external spline or a square shaft. The two are connected and engaged, so that the motor 51 can drive the shaft rod 41 to rotate synchronously, while the shaft rod 41 can slide freely along the axial direction relative to the motor shaft end, thus realizing the decoupling of rotation drive and lifting motion.

[0030] Furthermore, the drive lifting mechanism 5 described in this invention also includes; A worm gear 52 is fixedly installed on the shaft end of the motor 51. A frame 53 is fixedly installed inside the support frame 50. A worm wheel 54 is rotatably connected inside the frame 53. A lifting ring 55 is fixedly installed on the upper end of the shaft 41. A ring groove 56 is opened on the outer side of the lifting ring 55. A lifting structure for driving the lifting ring 55 to move up and down is also provided on the outer side of the frame 53.

[0031] Reference Figure 7 In an optional embodiment, the lifting structure of the present invention includes; Lifting arms 57 are rotatably connected to both sides of the frame 53. Guide wheels 571 are rotatably connected to the ends of the lifting arms 57, and these guide wheels 571 are rotatably connected inside the annular groove 56. Each lifting arm 57 is L-shaped or straight-arm shaped, with a guide wheel 571 rotatably connected to its lower end. Both guide wheels 571 are embedded in the annular groove 56 and can roll along it. When the lifting arm 57 swings around its hinge point with the frame 53, the guide wheels 571 will actuate the lifting ring 55, causing the shaft 41 to rise or fall. An eccentric plate 58 is fixedly installed at the shaft end of the worm gear 54, and a connecting rod 59 is rotatably connected to the shaft end of the eccentric plate 58. The other end of the connecting rod 59 is rotatably connected to the middle of the lifting arm 57.

[0032] The working process is as follows: Motor 51 drives worm 52 to rotate, and worm wheel 54 rotates at a reduced speed. Eccentric plate 58 at the shaft end of worm wheel 54 rotates synchronously, driving lifting arm 57 to reciprocate around its hinge point via connecting rod 59. When the pin of eccentric plate 58 moves from the near end to the far end, connecting rod 59 pushes the lower guide wheel 571 of lifting arm 57 to move obliquely downwards, forcing lifting ring 55 to drive shaft 41 downwards; conversely, when the pin of eccentric plate 58 moves from the far end to the near end, the lower end of lifting arm 57 lifts upwards, and guide wheel 571 pulls lifting ring 55 upwards through annular groove 56, causing shaft 41 to rise accordingly. This cycle repeats, thus achieving the periodic up-and-down reciprocating motion of shaft 41.

[0033] It should be noted that since the lifting ring 55 rotates together with the shaft 41, while the guide wheel 571 and the ring groove 56 are in rolling contact, and the lifting arm 57 does not rotate, the rotational motion and the lifting motion do not interfere with each other. At the same time, the speed of the worm gear 54 is proportional to the speed of the motor 51. By adjusting the transmission ratio of the worm gear or the eccentricity of the eccentric plate 58, the lifting frequency and stroke of the shaft 41 can be easily adjusted.

[0034] In summary, the drive lifting mechanism 5 of this embodiment simultaneously realizes the circumferential rotation and axial reciprocating motion of the shaft 41 through the same motor 51, and the motion parameters of the two are related to each other, which facilitates the subsequent coordinated control with the water channel and air channel in the central cooling mechanism 6 for liquid and air supply; the entire mechanism has a compact structure and reliable transmission, and is particularly suitable for the dynamic stirring requirements in the filler-natural latex mixing process.

[0035] Reference Figure 6 In some embodiments, the central cooling mechanism 6 of the present invention includes; Water channels 61 and air ducts 62 are formed inside the shaft 41, extending axially along the shaft 41 and being independent and isolated from each other. Water channel 61 is used to transport cooling water, and air duct 62 is used to transport cooling gas. The upper ends of water channel 61 and air duct 62 each have independent inlets for connecting to external cooling water and air sources; their lower ends extend to the lower part of the shaft 41. The fixed ring 42 has an internally formed extended water channel 63 and an extended air channel 64 that connect to the stirring blade 43. The extended water channel 63 and the extended air channel 64 are respectively connected to the water channel 61 and the air channel 62.

[0036] Specifically, the fixed ring 42 has an annular channel or radial channel inside, which guides the water channel 61 and air channel 62 in the shaft 41 to each stirring blade 43. Each stirring blade 43 has an independent extended water channel 63 and an extended air channel 64 inside, which are not interconnected and are connected to the corresponding channel in the fixed ring 42.

[0037] Cooling water enters through the inlet of water channel 61 at the upper end of shaft 41, flows downward along shaft 41, flows through the extended water channel 63 inside the fixed ring 42 in sequence, and finally enters the end of the extended water channel 63 of each stirring blade 43. Cooling gas enters through the inlet of air duct 62, flows along an independent path through the extended air duct 64 of fixed ring 42, and reaches the end of the extended air duct 64 of stirring blade 43.

[0038] After the cooling medium completes heat exchange inside the stirring blade 43, it returns to the bottom of the shaft 41 through the return channel at the end of the stirring blade 43. The bottom of the shaft 41 is provided with a connection interface, through which the heated cooling medium is led out of the mixing tank 2 through an external pipe. After being cooled by a heat exchanger, it is pumped back into the water channel 61 or the air channel 62 inlet to form a closed-loop pipeline.

[0039] It should be noted that water channel 61 and air duct 62 can operate independently or simultaneously. For example, under normal operating conditions, cooling water alone can meet the heat dissipation requirements; when rapid cooling is required or the material viscosity is too high, resulting in high water flow resistance, cooling gas can be introduced simultaneously to enhance internal turbulence and heat exchange efficiency through gas-liquid two-phase flow or gas-assisted drainage. In addition, since the cooling medium enters from the top of the shaft 41 and exits from the bottom, the entire central cooling mechanism 6 rotates and rises and falls together with the shaft 41. The bottom external pipeline needs to use a rotary joint with a hose or a rotary sealing structure, such as the rotary joint 9 described below, to achieve a dynamic sealing connection.

[0040] Reference Figure 9 In an optional embodiment, an inflation mechanism 7 is further provided inside the frame 53 in this invention; The inflation mechanism 7 includes a sealing sleeve 71 fixedly installed in the frame 53, a sliding frame 72 slidably connected inside the frame 53, a piston rod 73 fixedly installed at the bottom of the sliding frame 72, a first piston 74 slidably installed at the end of the piston rod 73 inside the frame 53, and a spring 75 fixedly installed between the sliding frame 72 and the sealing sleeve 71. The worm gear 54 is also fixedly mounted with an abutment protrusion 76 that abuts against the sliding frame 72.

[0041] When the worm gear 54 rotates, the abutment protrusion 76 rotates to the position of contacting the sliding frame 72, pressing the sliding frame 72 downward. The sliding frame 72 drives the first piston 74 downward through the piston rod 73, compressing the gas in the sealing sleeve 71 and forcing the gas out. When the abutment protrusion 76 rotates past its highest point, the sliding frame 72 returns to its original position under the restoring force of the spring 75, and the first piston 74 moves upward, drawing in gas from the outside. This cycle repeats, achieving continuous gas pumping.

[0042] Of course, to ensure unidirectional gas flow, the sealing sleeve 71 is equipped with an inlet and an outlet. A one-way inlet valve is installed at the inlet, allowing only external gas to enter the sealing sleeve 71; a one-way outlet valve is installed at the outlet, allowing only the gas inside the sealing sleeve 71 to exit. The outlet is connected to a rotary joint 9 corresponding to the air duct 62 at the upper end of the shaft 41 via a pipeline. When the first piston 74 moves upward, a negative pressure is generated inside the sealing sleeve 71, the one-way inlet valve opens, and external cooling gas is drawn in; when the first piston 74 moves downward, the pressure inside the sealing sleeve 71 increases, the one-way outlet valve opens, and the gas is forced into the air duct 62, ultimately exiting from the end of the extended air duct 64 of the stirring blade 43, thus achieving gas cooling of the central area of ​​the material.

[0043] Preferably, the inflation mechanism 7 can work in conjunction with the water tank piston structure 8 described later. When both are running simultaneously, the gas and liquid form a gas-liquid two-phase flow in the central cooling mechanism 6, which can enhance internal disturbance, destroy the thermal boundary layer, and further improve heat exchange efficiency; when it is necessary to drain the residual liquid in the water channel 61, the inflation mechanism 7 can be activated separately to use compressed gas to discharge the liquid from the bottom.

[0044] In this embodiment, the rotational motion of the worm gear 54 is directly converted into the reciprocating pumping motion of the first piston 74 by the abutting protrusion 76 at the shaft end of the worm gear 54. No additional power source is required, and the coordinated control of the air filling mechanism 7 and the stirring drive system is realized. The structure is compact and the control is precise.

[0045] Reference Figure 10 In an optional embodiment, a water tank 8 is also fixedly installed on the upper part of the support frame 50 in this invention. The water tank 8 has a cylindrical structure and is fixed on the upper part of the support frame 50, located below the motor 51. The interior of the water tank 8 forms a sealed chamber for storing cooling water. A second piston 81 is fixedly installed on the outer side of the shaft 41, and the second piston 81 is movably connected to the interior of the water tank 8.

[0046] When the drive lifting mechanism 5 drives the shaft 41 to reciprocate up and down, the second piston 81 moves synchronously up and down with the shaft 41 within the water tank 8. When the second piston 81 moves downward, it squeezes the cooling water in the lower chamber, increasing the water pressure and discharging the water. When the second piston 81 moves upward, a negative pressure is created in the lower chamber, drawing external cooling water into the second water tank 8. This reciprocating motion achieves a continuous water pumping function.

[0047] Of course, to ensure unidirectional flow of cooling water and form a circulation pipeline, the water tank 8 is equipped with a water inlet and a water outlet. A one-way inlet valve is installed at the water inlet, allowing only water from an external water source to enter the water tank 8; a one-way outlet valve is installed at the water outlet, allowing only water in the water tank 8 to be discharged. The water outlet is connected to the inlet of the water channel 61 at the upper end of the shaft 41 via a pipeline.

[0048] Specifically, in conjunction with the aforementioned central cooling mechanism 6, the complete water circulation path is as follows: Under the reciprocating drive of the piston 81, the water tank 8 pressurizes the cooling water into the water channel 61. The water flows downward along the shaft 41, enters the end of the extended water channel 63 of the stirring blade 43 through the extended water channel 63 in the fixed ring 42, completes heat exchange inside the stirring blade 43, and returns to the bottom of the shaft 41 through the return channel. The bottom of the shaft 41 leads the heated water to the external heat exchanger through an external pipe. The cooled water returns to the inlet of the water tank 8, forming a closed loop.

[0049] In this embodiment, the water tank piston structure and the aforementioned air filling mechanism 7 are both driven by the reciprocating motion of the same drive lifting mechanism 5. The water flow in the water tank 8 is directly driven by the lifting and lowering of the shaft 41. The air filling mechanism 7 is driven by the rotation of the worm gear 54 through the contact protrusion 76. When it is necessary to drain the residual liquid in the central cooling mechanism 6, the water supply to the water tank 8 can be stopped first, and the air filling mechanism 7 can be started at the same time. Compressed gas is used to blow out the residual liquid in the water channel 61 and the extended water channel 63 from the bottom, so as to avoid the liquid remaining in the pipeline and causing corrosion or scaling.

[0050] The two are independent of each other but move synchronously. They can be selected to operate separately or simultaneously depending on the working conditions. For example, when water cooling is used alone, only cooling water can be introduced into the water channel 61, which is suitable for conventional cooling needs. When air cooling is used alone, only cooling gas can be introduced into the air channel 62, which is suitable for light load or rapid liquid drainage scenarios. In addition, the water tank 8 and the air filling mechanism 7 can be operated simultaneously. Cooling water and compressed gas mix inside the stirring blade 43 to form a gas-liquid two-phase flow, which enhances internal disturbance, destroys the thermal boundary layer, and significantly improves heat exchange efficiency.

[0051] In this embodiment, the piston 81 is directly fixed to the shaft 41, and the water pumping is achieved by the reciprocating motion of the shaft 41 itself. No additional power source is required, the structure is compact, and it is completely synchronized with the stirring motion, thus realizing the coordinated motion of water supply and stirring.

[0052] Reference Figure 9 It should be noted that two rotary joints 9 are provided on the outer side of the shaft 41 in this invention. The two rotary joints 9 are respectively connected to the water channel 61 and the air channel 62. Specifically, since the shaft 41 rotates circumferentially with the motor 51 and reciprocates axially with the drive lifting mechanism 5 during operation, it is impossible to directly rigidly connect the external stationary water supply pipe and air supply pipe to the water channel 61 and the air channel 62. To solve this dynamic sealing problem, this embodiment installs two independent rotary joints 9 on the upper outer side of the shaft 41. The two are arranged vertically or side by side along the axial direction, without interfering with each other. The two rotary joints 9 ensure that the water channel 61 and the air channel 62 can continuously and stably obtain a cooling medium supply during the high-speed rotation and large-stroke lifting of the shaft 41. The specific structure of the rotary joints 9 is a conventional method for those skilled in the art and will not be described in detail here.

[0053] In summary, this device includes a stair-type support platform 1 and a mixing tank 2 fixed on it. The mixing tank 2 has an outer layer 20, within which a continuous, bent flow channel 32, composed of dividing ribs 31 and staggered baffles 33, is configured to force the cooling medium to flow turbulently along a precise path, achieving uniform cooling of the periphery. Inside the mixing tank 2 is a stirring mechanism 4, whose shaft 41 and stirring blades 43 are respectively formed with interconnected water channels 61 and air channels 62, constituting a central cooling mechanism 6. The cooling medium enters from the top and exits from the bottom, forming a circulation pipeline to achieve cooling of the core area from the inside out. Above the mixing tank 2 is a drive lifting mechanism 5, which, via a motor 51, simultaneously drives the shaft 41 to rotate circumferentially and reciprocate axially. The reciprocating motion is achieved using a worm gear 52, a worm wheel 54, an eccentric plate 58, a connecting rod 59, and a lifting arm 57. An air-inflating mechanism 7 is also provided inside the frame 53, which uses the abutting protrusion 76 at the end of the worm gear 54 shaft to drive the first piston 74 to periodically pump air; a water tank 8 is provided inside the support frame 50, and the piston 81 on the outside of the shaft 41 pumps water synchronously as the shaft 41 rises and falls. Two rotary joints 9 are provided on the outside of the shaft 41, which are respectively connected to the water channel 61 and the air channel 62.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A raw material mixing device for the compounding and processing of fillers and natural rubber latex, characterized in that, Includes a support platform (1) and a mixing tank (2) fixed on the support platform (1); The mixing tank (2) has an outer layer (20) and a flow guiding mechanism (3) is arranged in the outer layer (20). A stirring mechanism (4) is also arranged inside the mixing tank (2). A driving lifting mechanism (5) is arranged on the upper side of the mixing tank (2) to drive the stirring mechanism (4) to rotate circumferentially and move up and down. The stirring mechanism (4) is also equipped with a central cooling mechanism (6).

2. The raw material mixing device for compounding fillers and natural rubber latex according to claim 1, characterized in that: The flow guiding mechanism (3) includes; A plurality of dividing ribs (31) are distributed around the circumference of the interlayer (20); A flow channel (32) is constructed between each pair of partitions (31), and a baffle (33) is formed on the end face of the two opposing partitions (31) in a staggered manner. Each baffle (33) of each flow channel (32) constructs a continuously bent flow channel structure.

3. The raw material mixing device for compounding fillers and natural rubber latex according to claim 1, characterized in that: The stirring mechanism (4) includes; Rotate the shaft (41) connected to the mixing tank (2); The shaft (41) moves up and down along the middle of the mixing tank (2), and several fixing rings (42) are fixedly installed below the shaft (41). Stirring blades (43) are distributed on the outer circumference of the fixing rings (42).

4. The raw material mixing device for compounding fillers and natural rubber latex according to claim 3, characterized in that: The drive lifting mechanism (5) includes: The motor (51) is fixedly installed above the mixing tank (2) by the support frame (50); The shaft end of the motor (51) and the shaft rod (41) are movably connected and circumferentially locked.

5. The raw material mixing device for compounding fillers and natural rubber latex according to claim 4, characterized in that: The drive lifting mechanism (5) also includes; A worm gear (52) is fixedly installed on the shaft end of the motor (51). A frame (53) is fixedly installed inside the support frame (50). A worm wheel (54) is rotatably connected inside the frame (53). A lifting ring (55) is fixedly installed at the upper end of the shaft (41). A ring groove (56) is opened on the outer side of the lifting ring (55). A lifting structure for driving the lifting ring (55) to move up and down is also provided on the outer side of the frame (53).

6. The raw material mixing device for compounding fillers and natural rubber latex according to claim 5, characterized in that: The lifting structure includes; Lifting arms (57) are rotatably connected to both sides of the frame (53). A guide wheel (571) is rotatably connected to the end of the lifting arm (57). The guide wheel (571) is rotatably connected to the inside of the annular groove (56). An eccentric plate (58) is fixedly installed at the shaft end of the worm gear (54). A connecting rod (59) is rotatably connected to the shaft end of the eccentric plate (58). The other end of the connecting rod (59) is rotatably connected to the middle of the lifting arm (57).

7. The raw material mixing device for compounding fillers and natural rubber latex according to claim 5, characterized in that: The central cooling mechanism (6) includes; Water channels (61) and air channels (62) formed inside the shaft (41); The fixed ring (42) has an internally formed extended water channel (63) and an extended air channel (64) that connect to the stirring blade (43). The extended water channel (63) and the extended air channel (64) are respectively connected to the water channel (61) and the air channel (62).

8. The raw material mixing device for compounding fillers and natural rubber latex according to claim 7, characterized in that: An inflation mechanism (7) is also provided inside the frame (53); The inflation mechanism (7) includes a sealing sleeve (71) fixedly installed in the frame (53), a sliding frame (72) slidably connected inside the frame (53), a piston rod (73) fixedly installed at the bottom of the sliding frame (72), a first piston (74) slidably installed at the end of the piston rod (73), and a spring (75) fixedly installed between the sliding frame (72) and the sealing sleeve (71). The worm gear (54) is also fixedly installed with an abutting protrusion (76) that abuts against the sliding frame (72).

9. A raw material mixing device for compounding fillers and natural rubber latex according to claim 5, characterized in that: A water tank (8) is fixedly installed on the upper part of the support frame (50), and a second piston (81) is fixedly installed on the outer side of the shaft (41). The second piston (81) is movably connected to the inside of the water tank (8).

10. A raw material mixing device for compounding fillers and natural rubber latex according to claim 7, characterized in that: Two rotary joints (9) are provided on the outer side of the shaft (41), and the two rotary joints (9) are respectively connected to the water channel (61) and the air channel (62).

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