A continuous shear mixing device and its staged feeding mixing method

Abstract

This invention provides a continuous shearing mixing device and its staged feeding mixing method, relating to the technical field of material shearing devices. It includes: a shearing processing unit, comprising a shearing cylinder, an inner rotor mechanism, and an outer rotor mechanism; a staged feeding unit; and a mixing reaction unit. Pressure is applied to the pressurization zone, causing the radial gap adjusting rubber to bulge outwards. The rear end of the rotating cylinder also has a primary feeding port arranged in a ring array. This invention can adjust the shear gap through the axial translational movement of the movable helical ribs, adapting to the shearing requirements of different materials. Adding reagents during the activation stage significantly improves the activation reaction effect. The primary reagent additive not only serves as an activation reactant but also as a pressure-maintaining medium for the radial gap adjusting rubber, effectively ensuring the outward bulge of the radial gap adjusting rubber, thus playing a good role in maintaining the shear gap adjustment.

Description

Technical Field

[0001] This invention relates to the field of material shearing devices, specifically a continuous shearing and mixing device and its staged feeding and mixing method. Background Technology

[0002] The prior art, disclosed in patent CN101518943A, describes a method and apparatus for the differential plasticizing extrusion of polymer materials using dual rotors. The method utilizes the periodic plasticizing extrusion space, shear force field, and tensile force field generated by the differential rotation of the dual rotors to force feeding, disperse melting, intensified mixing and plasticizing, and then extruding the material. The apparatus includes a barrel, an outer rotor, and an inner rotor. The outer and inner rotors are concentrically arranged within the barrel cavity, and their common axis coincides with the axis of the barrel cavity. The inner and outer rotors are connected to a transmission mechanism at their respective feed inlets. This invention employs differential dual-rotor operation, significantly improving the solid conveying rate, resulting in a shorter material travel time, lower energy consumption, and better uniformity of phase structure control. Furthermore, the organic combination of positive displacement conveying and shear-draft conveying enhances the stability of plasticizing transport, improves pressure build-up stability, and broadens the adaptability to various materials.

[0003] However, the aforementioned device still has some significant drawbacks during use: 1. The shearing gap between the inner and outer rotors of the device is fixed and cannot be adjusted according to the material viscosity, solid content, or particle size. When processing different batches or materials with fluctuating properties, this results in insufficient shearing strength, ineffective dispersion of agglomerates, and inadequate mixing of the reagent and the material, ultimately affecting the uniformity of the final product and the stability of the process; 2. During the material shearing process, the material surface is fully activated. Utilizing the active surface generated by shearing, adding an activating agent at this time can significantly improve the reaction effect. However, in the existing technology, the agent is usually added in stages after shearing. This method of addition can affect the reaction effect due to differences in the timing of addition. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous shearing mixing device and a staged feeding mixing method thereof to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A continuous shear mixing device, comprising: The shearing processing unit consists of a shearing cylinder, an inner rotor mechanism, and an outer rotor mechanism. The inner rotor mechanism and the outer rotor mechanism are coaxially and rotate in opposite directions inside the shearing cylinder, forming a shearing gap between them, thereby shearing the material passing through. The graded feeding unit is located adjacent to and directly connected to the outlet of the shearing processing unit. The graded feeding unit has at least two secondary feeding ports along the flow direction, and a partition structure is provided between each secondary feeding port to form multiple mixing zones. The mixing reaction unit is located adjacent to and directly connected to the outlet of the staged feeding unit. It mixes the internal materials using an internal stirring mechanism. The mixing reaction unit has a discharge port at the end furthest from the staged feeding unit. The inner rotor mechanism includes an inner transmission wheel, a rotating drum, a fixed spiral rib, a movable spiral rib, and a radial clearance adjusting rubber. The fixed spiral rib is welded to the outer wall of the rotating drum, and the movable spiral rib is axially telescopically mounted on the outer wall of the rotating drum. The two ends of the radial clearance adjusting rubber are respectively sealed to the fixed spiral rib and the movable spiral rib, and together with the outer wall of the rotating drum, they form a pressure zone. By applying pressure to the pressure zone, the radial clearance adjusting rubber bulges outward, and the bulge height of the radial clearance adjusting rubber is adjusted by the axial telescopic movement of the movable spiral rib, thereby adjusting the spacing of the shear gap. The rear end of the rotating drum is also provided with a primary feeding port arranged in a ring array, so as to perform primary feeding into the drum during the shearing process.

[0006] Preferably, the outer rotor mechanism includes an outer helical ridge and a sealed rotary support. The sealed rotary support is rotatably disposed in the assembly hole opened in the shearing cylinder. The outer helical ridge is fixedly connected to the sealed rotary support on one side inside the shearing cylinder. An outer drive gear is also fixedly installed on the outside of the sealed rotary support. The drive mechanism drives the outer drive gear to rotate, thereby driving the outer helical ridge to perform a fixed-axis rotational motion.

[0007] Preferably, the inner transmission wheel is fixedly sleeved on the side of the rotating drum extending outward from the shearing cylinder, and is driven to rotate by an external drive mechanism, thereby driving the rotating drum to perform a fixed-axis rotational motion.

[0008] Preferably, the rotating drum also has a main channel in the middle, which is connected to the pressurization zone via a pressure channel. By applying pressure to the main channel, the radial clearance adjusting rubber is pushed outward.

[0009] Preferably, the main channel in the middle of the rotating drum is also connected to several primary feeding ports through a feeding channel. The feeding channel is also equipped with a solenoid valve, so that primary chemical is added into the shearing cylinder by opening the solenoid valve.

[0010] Preferably, the shearing cylinder is provided with a feeding port on the side away from the grading and feeding unit. The rotating cylinder is integrally composed of a conical front end and a cylindrical rear end. The diameter of the conical front end of the rotating cylinder gradually increases as it is conveyed from the feeding port to the rear. The fixed spiral rib is set to fit the external shape of the rotating cylinder, and the movable spiral rib is set at the cylindrical rear end of the rotating cylinder.

[0011] Preferably, multiple telescopic drive motors are also fixedly installed inside the cylindrical rear end of the rotating drum. The drive arms of the multiple telescopic drive motors are fixedly connected to the movable spiral rib, thereby driving the movable spiral rib to perform axial telescopic translational motion through the telescopic drive motors.

[0012] Preferably, a telescopic baffle is also fixedly installed on the drive arm of the telescopic drive motor. The telescopic baffle is movably inserted into the baffle groove opened in the rotating drum, so that materials cannot enter the side of the telescopic drive motor during the telescopic movement of the telescopic drive motor.

[0013] A staged feeding and mixing method, employing the aforementioned continuous shear mixing device, includes the following steps: S1: The material is fed into the shearing cylinder through the feeding port and conveyed to the rear end by the rotation of the inner rotor mechanism and the outer rotor mechanism. The material is sheared as it passes through the inner rotor mechanism and the outer rotor mechanism. S2: During the shearing process, the position of the movable spiral rib is adjusted according to the shearing requirements of the material, thereby adjusting the height of the radial clearance adjustment rubber bulge, and the shearing clearance is adjusted by applying pressure to the pressure zone; S3: When the sheared material reaches the rear end of the rotating drum, it is initially fed into the sheared material through the primary feeding port. S4: The material after shearing and primary dosing enters the graded feeding unit and is graded through the secondary feeding port set in the graded feeding unit, so that different components of additives are added in stages as the material flows backward; S5: The material after feeding is finally fed into the mixing reaction unit for mixing and stirring, and the mixed material is output after the mixing and stirring is completed.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention enables the adjustment of the shear gap through the axial translational movement of the movable helical ridge. This adjustment can be made according to the material's viscosity, solid content, particle size, etc., thereby ensuring both shear strength and the stability of the material shearing process, adapting to the shearing requirements of different materials. Furthermore, this invention allows for the addition of primary reagents during the shearing activation process. Adding reagents during the activation stage significantly improves the activation reaction effect, thereby enhancing the effectiveness of staged dosing.

[0015] The primary pharmaceutical additive of this invention not only serves as an activating reactant but also as a pressure-maintaining medium for the radial clearance adjusting rubber, effectively ensuring that the radial clearance adjusting rubber bulges outward, thereby playing a good role in maintaining the shear clearance adjustment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic axial cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the shearing structure of the shearing processing unit of the present invention; Figure 4 This is an axial cross-sectional view of the shearing structure of the shearing processing unit of the present invention; Figure 5 This is a partially enlarged schematic diagram of the telescopic drive motor connection structure of the present invention; Figure 6 This is a schematic diagram showing the movable connection between the telescopic baffle and the baffle groove of the present invention.

[0017] In the diagram: 1. Shearing unit, 2. Shearing cylinder, 3. Stage feeding unit, 4. Secondary feeding port, 5. Separation structure, 6. Mixing reaction unit, 7. Discharge port, 8. Inner drive wheel, 9. Rotary drum, 10. Fixed spiral rib, 11. Movable spiral rib, 12. Radial clearance adjustment rubber, 13. Pressurization zone, 14. Outer spiral rib, 15. Sealed rotary support, 16. Outer drive gear, 18. Main channel, 19. Pressure channel, 20. Feeding channel, 21. Feeding port, 22. Telescopic drive motor, 23. Drive arm, 24. Telescopic baffle, 25. Baffle groove, 26. Primary feeding port. Detailed Implementation

[0018] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1 to 6 The present invention provides a technical solution: Example 1: A continuous shearing and mixing device includes a shearing processing unit 1, a staged feeding unit 3, and a mixing and reaction unit 6.

[0020] The shearing processing unit 1 consists of a shearing cylinder 2, an inner rotor mechanism, and an outer rotor mechanism. The shearing cylinder 2 is a hollow cylinder with a feeding port 21 at its front end and a flange connection to the graded feeding unit 3 at its rear end. The inner rotor mechanism and the outer rotor mechanism are coaxially and rotate in opposite directions inside the shearing cylinder 2, forming an annular shearing gap between them. After the material enters the shearing cylinder 2 through the feeding port 21, it flows axially and is subjected to shear stress during the process of passing through the shearing gap, thereby achieving shearing processing effects such as agglomerate crushing, droplet dispersion, or polymer chain deagglomeration.

[0021] The inner rotor mechanism includes an inner drive wheel 8, a rotating drum 9, a fixed spiral rib 10, a movable spiral rib 11, and a radial clearance adjustment rubber 12. The inner drive wheel 8 is fixedly sleeved on the side of the rotating drum 9 extending outward from the shearing cylinder 2. The inner drive wheel 8 is driven to rotate by an external drive mechanism, which in turn drives the rotating drum 9 to rotate on a fixed axis. The rotating drum 9 is integrally composed of a conical front end and a cylindrical rear end. The diameter of the conical front end gradually increases as it is conveyed from the feeding port 21 to the rear. This design can form a large material holding space at the inlet and gradually compress the material as it is conveyed forward, improving the material filling efficiency and initial shearing effect. The cylindrical rear end is used to arrange the movable spiral rib 11 and the radial clearance adjustment structure.

[0022] A fixed spiral rib 10 is welded to the outer wall of the rotating drum 9, and its spiral direction matches the rotation direction of the drum 9. It is used to push materials and generate primary shear. The fixed spiral rib 10 is designed to fit the external shape of the rotating drum 9. That is, the root of the spiral rib changes with the cone surface at the conical front end, while the spiral rib maintains a constant outer diameter at the cylindrical rear end. A movable spiral rib 11 is axially telescopically mounted on the outer wall of the cylindrical rear end of the rotating drum 9. A sealing ring is also provided on the side of the movable spiral rib 11 that is in contact with the rotating drum 9, so as to prevent materials from entering the gap at the bottom of the movable spiral rib 11 during the translation and sliding process. The radial clearance adjusting rubber 12 is used to enclose the pressure zone 13 formed between the fixed spiral rib 10 and the movable spiral rib 11. Specifically, the radial clearance adjusting rubber 12 is an annular elastic sleeve with reinforcing ribs inside. The reinforcing ribs are arranged parallel to the axial direction of the rotating drum 9. The rubber 12 is 5mm thick and does not expand or deform. Its two ends are sealed and fixed to the end of the fixed spiral rib 10 and the front end of the movable spiral rib 11, respectively, thus forming a closed annular cavity, namely the pressure zone 13, between the two. During the process of applying pressure to the pressure zone 13, the radial clearance adjusting rubber 12 will bulge outward radially, thereby reducing the shear gap between the inner rotor mechanism and the outer rotor mechanism. The outer surface of the radial clearance adjusting rubber 12 has a wear-resistant surface morphology. Furthermore, wear-resistant quartz sand particles can be added inside the rubber surface layer to increase the friction during the shearing process. The axial length of the pressure zone 13 can be changed by the axial extension and retraction movement of the movable spiral rib 11, thereby adjusting the bulge height of the radial clearance adjusting rubber 12 and changing the pre-compression of the rubber. In this way, the shear gap can be adjusted during the axial extension and retraction movement of the movable spiral rib 11, achieving fine adjustment of the shear gap.

[0023] The rear end of the rotating drum 9 is also provided with a primary feeding port 26 arranged in a ring array. The primary feeding port 26 is located on the outer surface of the fixed spiral rib 10. These primary feeding ports 26 are located at the cylindrical rear end of the rotating drum 9. The primary feeding ports 26 are connected to the feeding channel 20 inside the rotating drum 9. During the shearing process, the agent or additive can be directly sprayed into the shearing gap to realize the synchronous operation of shearing and primary dosing. This process can further refine the management of the step-by-step dosing process, so that the material can be dosing in time after shearing activation, which can significantly improve the activation reaction effect and thus improve the effect of graded dosing.

[0024] The outer rotor mechanism includes an outer helical rib 14 and a sealed rotary support 15. An assembly hole is provided on the wall of the shearing cylinder 2. The sealed rotary support 15 is rotatably mounted in the assembly hole, meaning that the sealed rotary support 15 can rotate relative to the shearing cylinder 2 but its axial position is fixed. The outer helical rib 14 is fixedly connected to the side of the sealed rotary support 15 located inside the shearing cylinder 2. A shearing gap is formed between its inner surface and the outer surface of the inner rotor mechanism. An outer drive gear 16 is also fixedly installed on the outside of the sealed rotary support 15. The drive mechanism drives the outer drive gear 16 to rotate, which in turn drives the outer helical rib 14 to perform a fixed-axis rotational motion. The rotation direction of the outer helical rib 14 is opposite to that of the rotating cylinder 9 of the inner rotor mechanism, thereby generating relative motion between the inner rotor and the outer rotor, which greatly improves the shearing rate.

[0025] The graded feeding unit 3 is located adjacent to and directly connected to the outlet end of the shearing treatment unit 1. That is, the material flows out of the shearing treatment unit 1 and immediately enters the graded feeding unit 3 without a long conveying pipeline in between, so as to avoid the material structure recovery or activity reduction. The graded feeding unit 3 is provided with no less than two secondary feeding ports 4 along the flow direction. A separation structure 5 is provided between each secondary feeding port 4 to form multiple independent mixing zones. The separation structure 5 can be an annular baffle or a radial partition. Its function is to separate the dosing zones of adjacent secondary feeding ports 4 to prevent different agents from back-mixing immediately after addition, thereby allowing different types of agents to be added sequentially or the same agent to be added in batches. Each mixing zone can be provided with guide vanes or turbulence protrusions to promote local mixing of agents and materials.

[0026] The mixing reaction unit 6 is located adjacent to and directly connected to the outlet end of the staged feeding unit 3. An internal mixing mechanism, such as a paddle mixer, static mixer, or spiral ribbon mixer, is used to mix the materials within the unit. This mechanism ensures that the materials with added reagents achieve macroscopically uniform concentration and complete reaction within a sufficient residence time. An outlet 7 is located at the end of the mixing reaction unit 6 furthest from the staged feeding unit 3, from which the final mixture is discharged.

[0027] A feeding port 21 is also provided on the side of the shearing cylinder 2 away from the graded feeding unit 3, through which the material enters the shearing cylinder 2.

[0028] Example 2 Based on Embodiment 1, this embodiment further details the design of the pressurization and dosing channels. A main channel 18 is provided in the middle of the rotating drum 9 along the axis. The main channel 18 is a long hole that penetrates the rotating drum 9. Its rear end is connected to an external pressure pump through a rotary joint. The main channel 18 is connected to the pressurization zone 13 through the pressure channel 19. The pressure channel 19 is a radial or axial hole opened in the wall of the rotating drum 9. One end of the pressure channel 19 is connected to the main channel 18, and the other end is connected to the pressurization zone 13. By delivering high-pressure liquid into the main channel 18, the radial clearance adjusting rubber 12 can be pushed outward.

[0029] Furthermore, the main channel 18 in the middle of the rotating drum 9 is also connected to several primary feeding ports 26 through the feeding channel 20. The feeding channel 20 is a fine hole branching from the main channel 18, and its outlet corresponds to each primary feeding port 26. A solenoid valve is also installed in the feeding channel 20. The control cable of the solenoid valve can be led out to an external controller through the slip ring at the end of the rotating drum 9. When primary dosing is required, the solenoid valve is opened, and the agent in the main channel 18 is sprayed out from the primary feeding port 26 through the feeding channel 20 under pressure and enters the shear gap. This design realizes the reuse of the channel for the pressure medium and the agent. It can be used to adjust the shear gap and to dosing. The structure is compact. It should be noted that since the agent needs to contact the inner side of the radial gap adjusting rubber 12, in order to prevent the radial gap adjusting rubber 12 from being corroded, a protective layer incompatible with the agent needs to be laminated on the inner side of the radial gap adjusting rubber 12.

[0030] Example 3 This embodiment refines the driving method of the movable spiral rib 11. The cylindrical rear end of the rotating drum 9 is machined with multiple mounting chambers. Each mounting chamber is fixedly installed with a telescopic drive motor 22. The telescopic drive motor 22 can be a linear stepper motor, a micro servo electric cylinder, or a hydraulic cylinder. The drive arms 23 of the multiple telescopic drive motors 22 are fixedly connected to the rear end face of the movable spiral rib 11. Through the telescopic movement of the telescopic drive motors 22, the movable spiral rib 11 is driven to translate along the axial direction of the rotating drum 9. Since the movable spiral rib 11 and the rotating drum 9 are in sliding fit, the axial distance between the movable spiral rib 11 and the fixed spiral rib 10 can be dynamically adjusted online.

[0031] To prevent materials from entering the mounting chamber where the telescopic drive motor 22 is located, a telescopic baffle 24 is fixedly installed on the drive arm 23 of the telescopic drive motor 22. The outer edge of the telescopic baffle 24 slides in conjunction with the baffle groove 25 opened on the rotating drum 9. The baffle groove 25 is an annular groove located on the inner wall of the cylindrical rear end of the rotating drum 9. The telescopic baffle 24 is movably inserted into the baffle groove 25, and a sealing ring is provided between the two. When the drive arm 23 of the telescopic drive motor 22 extends or retracts, the telescopic baffle 24 moves with the drive arm 23, always sealing the passage between the mounting chamber and the external materials, thereby ensuring that materials cannot enter the side of the telescopic drive motor 22, ensuring the cleanliness and reliable operation of the drive components.

[0032] A staged feeding and mixing method, employing the aforementioned continuous shear mixing device, includes the following steps: S1: The material is fed into the shearing cylinder 2 through the feeding port 21 and conveyed to the rear end by the rotation of the inner rotor mechanism and the outer rotor mechanism. The material is sheared during the process of passing through the inner rotor mechanism and the outer rotor mechanism. S2: During the shearing process, the position of the movable spiral rib 11 is adjusted according to the shearing requirements of the material, thereby adjusting the protrusion height of the radial clearance adjustment rubber 12, and the shearing clearance is adjusted by applying pressure to the pressure zone 13. S3: When the sheared material reaches the rear end of the rotating drum 9, it is initially fed into the sheared material through the primary feeding port 26. S4: The material that has been sheared and primary dosing is fed into the graded feeding unit 3 and then fed through the secondary feeding port 4 set in the graded feeding unit 3, so that different components of additives are added in stages as the material flows backward. S5: The material after feeding is finally fed into the mixing reaction unit 6 for mixing and stirring, and the mixed material is output after the mixing and stirring is completed.

[0033] 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 alterations 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. A continuous shearing and mixing device, characterized in that, include: The shearing processing unit consists of a shearing cylinder, an inner rotor mechanism, and an outer rotor mechanism. The inner rotor mechanism and the outer rotor mechanism are coaxially and rotate in opposite directions inside the shearing cylinder, forming a shearing gap between them, thereby shearing the material passing through. The graded feeding unit is located adjacent to and directly connected to the outlet of the shearing processing unit. The graded feeding unit has at least two secondary feeding ports along the flow direction, and a partition structure is provided between each secondary feeding port to form multiple mixing zones. The mixing reaction unit is located adjacent to and directly connected to the outlet of the staged feeding unit. It mixes the internal materials using an internal stirring mechanism. The mixing reaction unit has a discharge port at the end furthest from the staged feeding unit. The inner rotor mechanism includes an inner transmission wheel, a rotating drum, a fixed spiral rib, a movable spiral rib, and a radial clearance adjusting rubber. The fixed spiral rib is welded to the outer wall of the rotating drum, and the movable spiral rib is axially telescopically mounted on the outer wall of the rotating drum. The two ends of the radial clearance adjusting rubber are respectively sealed to the fixed spiral rib and the movable spiral rib, and together with the outer wall of the rotating drum, they form a pressure zone. By applying pressure to the pressure zone, the radial clearance adjusting rubber bulges outward, and the bulge height of the radial clearance adjusting rubber is adjusted by the axial telescopic movement of the movable spiral rib, thereby adjusting the spacing of the shear gap. The rotating drum is also provided with a main channel in the middle. The rear end of the main channel is connected to an external pressure pump through a rotary joint. The main channel is connected to the pressurization zone through a pressure channel. By pressurizing the main channel, the radial clearance adjustment rubber is pushed to bulge outward. The rear end of the rotating drum is also provided with a primary feeding port arranged in a ring array, so as to perform primary feeding into the drum during the shearing process.

2. The continuous shearing and mixing device according to claim 1, characterized in that: The outer rotor mechanism includes an outer helical ridge and a sealed rotary support. The sealed rotary support is rotatably mounted in the assembly hole of the shearing cylinder. The outer helical ridge is fixedly connected to the sealed rotary support on one side inside the shearing cylinder. An outer drive gear is also fixedly installed on the outside of the sealed rotary support. The drive mechanism drives the outer drive gear to rotate, thereby driving the outer helical ridge to perform a fixed-axis rotational motion.

3. A continuous shearing and mixing device according to claim 1 or 2, characterized in that: The inner transmission wheel is fixedly sleeved on the side of the rotating drum extending outward from the shearing cylinder. The inner transmission wheel is driven to rotate by an external drive mechanism, which in turn drives the rotating drum to perform a fixed-axis rotational motion.

4. The continuous shearing and mixing device according to claim 3, characterized in that: The main channel in the middle of the rotating drum is also connected to several primary feeding ports through a feeding channel. The feeding channel is also equipped with a solenoid valve, so that primary chemical can be added into the shearing drum by opening the solenoid valve.

5. A continuous shearing and mixing device according to claim 4, characterized in that: The shearing cylinder is also provided with a feeding port on the side away from the grading and feeding unit. The rotating cylinder is integrally composed of a conical front end and a cylindrical rear end. The diameter of the conical front end of the rotating cylinder gradually increases as it is conveyed from the feeding port to the rear. The fixed spiral rib is set to fit the external shape of the rotating cylinder, and the movable spiral rib is set at the cylindrical rear end of the rotating cylinder.

6. A continuous shearing and mixing device according to claim 5, characterized in that: Multiple telescopic drive motors are also fixedly installed inside the cylindrical rear end of the rotating drum. The drive arms of the multiple telescopic drive motors are fixedly connected to the movable spiral rib, thereby driving the movable spiral rib to perform axial telescopic translational motion through the telescopic drive motors.

7. A continuous shearing and mixing device according to claim 6, characterized in that: A telescopic baffle is also fixedly installed on the drive arm of the telescopic drive motor. The telescopic baffle is movably inserted into the baffle groove opened in the rotating drum, so that materials cannot enter the side of the telescopic drive motor during the telescopic movement of the telescopic drive motor.

8. A staged feeding and mixing method, employing the continuous shear mixing device according to any one of claims 1-7, characterized in that, Includes the following steps: S1: The material is fed into the shearing cylinder through the feeding port and conveyed to the rear end by the rotation of the inner rotor mechanism and the outer rotor mechanism. The material is sheared as it passes through the inner rotor mechanism and the outer rotor mechanism. S2: During the shearing process, the position of the movable spiral rib is adjusted according to the shearing requirements of the material, thereby adjusting the height of the radial clearance adjustment rubber bulge, and the shearing clearance is adjusted by applying pressure to the pressure zone; S3: When the sheared material reaches the rear end of the rotating drum, it is initially fed into the sheared material through the primary feeding port. S4: The material after shearing and primary dosing enters the graded feeding unit and is graded through the secondary feeding port set in the graded feeding unit, so that different components of additives are added in stages as the material flows backward; S5: The material after feeding is finally fed into the mixing reaction unit for mixing and stirring, and the mixed material is output after the mixing and stirring is completed.

Images