CN110919909B

CN110919909B - Efficient continuous waste rubber regeneration equipment and preparation method

Info

Publication number: CN110919909B
Application number: CN201911022634.6A
Authority: CN
Inventors: 郭磊; 刘海超; 汪传生; 吕德军; 任东辉; 翟天剑; 王智; 赵宇鹏
Original assignee: Qingdao University of Science and Technology
Current assignee: Qingdao University of Science and Technology
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2021-12-28
Anticipated expiration: 2039-10-25
Also published as: CN110919909A; NL2026736A; NL2026736B1

Abstract

The invention discloses efficient continuous waste rubber regeneration equipment which comprises a high-temperature high-speed stirring device, a constant-temperature storage hopper, a first-section constant-temperature quantitative metering and conveying device, a high-temperature strong-shearing desulfurization refining system, a second-section constant-temperature quantitative metering and conveying device, a low-temperature strong-shearing plasticizing and forming system, a shaping device, a driving system, a transmission system, a cooling system, a heating system and a rack, wherein the high-temperature high-speed stirring device is arranged at the bottom of the rack; the discharge port of the first section of constant-temperature quantitative metering conveying device is connected with the feed port of the thermal-mechanochemical decoupling system; the thermal-mechanochemical decoupling system comprises a screw, a machine barrel, a machine head, a shearing tooth and a sealing gasket; the machine barrel is fixed on the machine frame, a square hole is formed in the machine barrel in the circumferential direction, the shearing teeth are inserted into the square hole to be fixed, the shearing teeth and the machine barrel are sealed through sealing gaskets, and the shearing teeth are sector-shaped. According to the invention, the matching of the screw edges and the shearing teeth is used as a shearing area, so that the shearing area can be enlarged, and the torque force which can be borne by the screw can be enhanced; can be used for mechanically shearing and uncoupling high-strength vulcanized rubber particles.

Description

Efficient continuous waste rubber regeneration equipment and preparation method

Technical Field

The invention belongs to the field of reclaimed rubber preparation, and particularly relates to efficient continuous waste rubber regeneration equipment and a preparation method.

Background

With the rapid development of industries such as automobiles and the like in China, the rubber demand is increased year by year, and the huge demand makes China become the country with the largest rubber consumption in the world for many years continuously, but because of the shortage of rubber resources in China, nearly 80% of natural rubber and 60% of synthetic rubber mainly depend on import. As a novel rubber resource, the waste rubber can relieve the urgent shortage problem of rubber resources in China if the waste rubber can be reasonably utilized. Therefore, the waste rubber is well utilized and recycled, the waste is changed into valuable, and the method has great economic and social benefits.

Reclaimed rubber is one of the main methods for recycling waste rubber. The regenerated rubber is produced by crushing, high temperature, mechanical treatment and other physical and chemical processes to convert waste vulcanized rubber from elastic state into rubber with plasticity and capacity of being vulcanized, and the regenerated rubber breaks the cross-linked network of vulcanized rubber through the comprehensive action of heat, oxygen, machinery and regenerating agent. The addition of the reclaimed rubber to the unvulcanized rubber for blending to produce the rubber product does not change the properties of the rubber product, saves the raw rubber and carbon black, and improves certain properties of the rubber product.

Through technical storage and development for many years, the current reclaimed rubber production forms a desulfurization regeneration process mainly based on high-temperature high-pressure dynamic desulfurization. For example, patent CN201210069246.5 proposes a method for preparing an environment-friendly high-strength high-temperature reclaimed rubber, which comprises sequentially adding waste rubber powder, a reclaiming agent and a softening agent into a heated devulcanizer under stirring, wherein the temperature of the devulcanizer is 230 ℃, and the regeneration time is 4 hours; discharging the regenerated reclaimed rubber to a large-scale open mill for refining, cooling the refined rubber for standing, cooling to below 28 ℃ for standing for more than 27 hours, and thus obtaining the reclaimed rubber. Patent CN201510470919.1 proposes a method for preparing environment-friendly reclaimed rubber by two-stage desulfurization, wherein the first stage is subjected to high-temperature desulfurization in a desulfurizing tank, and the second stage is subjected to low-temperature desulfurization in a stirrer and an open mill.

CN201310402782.7 discloses a novel mill extruder for trace material blending, it mainly includes extrusion system, transmission system and temperature control system and receiving system, wherein extrusion system mainly comprises feeder, drive shaft, screw block, barrel, moves mill and quiet mill, moves the mill and passes through the reduction gear with transmission system's motor and links to each other, decides the mill through welded fastening on the barrel, moves the mill like this and decides the relative rotation of mill, produces powerful shearing force to and move the bead on the mill surface, form and move the milling system of mill and deciding the mill. The movable grinding disc and the thread block are alternately arranged, and materials can be mixed for many times through conveying by the thread groove on the side surface of the movable grinding disc. The invention applies the principle of high-efficiency shearing and blending of the millstone and is suitable for high-efficiency high-uniformity blending of trace materials.

From the view of the desulfurization reaction mechanism, the high-temperature high-pressure dynamic desulfurization belongs to chemical regeneration, namely, under the heating state, an activating agent permeates into the waste rubber under the assistance of a softening agent and reacts with the waste rubber, so that the crosslinked network of the waste rubber is destroyed, and the waste rubber is recovered into a linear and reprocessable macromolecular chain structure. However, the activator needs long-time high-temperature and high-pressure action when permeating into the waste rubber, the energy consumption is high, the efficiency is low, continuous production cannot be realized, the probability of main chain fracture is increased due to the long-time high-temperature oxidative cracking action, the rubber molecular chain is shortened, the quality uniformity of the reclaimed rubber is poor, and the recycling of the reclaimed rubber is not facilitated. In addition, the method requires high temperature and high pressure conditions, so that the environmental pollution is serious, and serious potential safety hazards exist.

Disclosure of Invention

In view of the above, the present invention provides an efficient continuous waste rubber regeneration device, which is implemented by the following technical scheme:

an efficient continuous waste rubber regeneration device comprises a high-temperature high-speed stirring device, a constant-temperature storage hopper, a first-section constant-temperature quantitative metering and conveying device, a high-temperature strong-shearing desulfurization refining system, a second-section constant-temperature quantitative metering and conveying device, a low-temperature strong-shearing plasticizing and forming system, a shaping device, a driving system, a transmission system, a cooling system, a heating system, a rack and the like;

preferably, the high-temperature high-speed stirring device is fixed on the frame, a discharge port of the high-temperature high-speed stirring device is connected with a feed port of the constant-temperature storage hopper, a discharge port of the constant-temperature storage hopper is fixedly connected with a feed port of the first constant-temperature quantitative metering and conveying device, a discharge port of the first constant-temperature quantitative metering and conveying device is connected with a feed port of the high-temperature strong-shear desulfurization refining system, a discharge port of the high-temperature strong-shear desulfurization refining system is connected with a feed port of the low-temperature strong-shear plasticizing and forming system through the second constant-temperature quantitative metering and conveying device, and a discharge port of the low-temperature strong-shear plasticizing and forming system is externally connected with the shaping device; the high-temperature strong-shearing desulfurization refining system comprises a screw, a machine barrel, a machine head, shearing teeth, a sealing gasket and the like;

preferably, the machine barrel is fixed on the machine frame, a square hole is formed in the machine barrel along the circumferential direction, the cutting teeth are inserted into the square hole for fixing, the cutting teeth and the machine barrel are sealed through a sealing gasket, the cutting teeth are in a sector shape, and cutting tooth heads penetrate into the machine barrel; the tail end of the machine barrel is fixedly connected with the machine head, the screw rod is positioned in an internal cavity formed by the machine barrel and the machine head and is fixedly connected with the transmission system, and the screw rod can rotate in the machine barrel;

preferably, the screw region is divided into a front end compression section, a middle strong shearing refining section and a tail end conveying section, the screw edge of the screw in the strong shearing refining section is a shearing screw edge and is in a discontinuous shape of cutting along the circumferential direction, and an annular non-screw edge space formed by the shearing screw edge corresponds to the part of the shearing tooth penetrating into the machine barrel; the bottom surface of the shearing tooth, the root diameter surface of the screw, the side surface of the shearing tooth, the side surface of the shearing screw rib and the gap between the top surface of the screw rib and the inner surface of the machine barrel form a strong shearing area.

Preferably, the shearing teeth of the efficient and continuous waste rubber regeneration equipment can be designed into different forms according to the shearing capacity, such as one or more combinations of rectangular shearing teeth, arc-shaped shearing teeth, corrugated shearing teeth, scattered shearing teeth and the like, and various types of shearing teeth can be combined and matched according to the requirements.

Preferably, the number of the shearing teeth of the high-efficiency continuous waste rubber regeneration equipment is designed according to the required shearing force field strength, the number of the shearing teeth in one circle along the circumferential direction of the machine barrel is 2-4, and the number of the groups along the axial direction of the machine barrel is at least 8; the shearing teeth at different circumferential positions can be designed into different types and sizes, the shearing teeth at different axial positions can be designed into different types, different sizes and different quantities, and the shearing screw edge of the screw rod is correspondingly adjusted.

Preferably, the angle proportion (theta/360 multiplied by the number of the cutting teeth) of the cutting teeth along the circumferential direction of the efficient continuous rubber regeneration equipment is designed according to the strength of the cutting teeth and the cylinder and the cutting capacity of the cutting teeth, and the angle proportion meets 30% -70%.

Preferably, according to the efficient continuous rubber regeneration equipment, the gap between the side surface of the shearing tooth and the side surface of the shearing screw edge of the screw is designed according to the required shearing strength and can be 0.15-1.0 mm; the minimum clearance between the bottom surface of the shearing tooth and the screw root diameter surface of the screw is designed according to the required shearing strength and can be 0.15-1.0 mm.

Preferably, the low-temperature strong-shear plasticizing and forming system of the efficient continuous rubber regeneration equipment adopts the same strong-shear design as the high-temperature strong-shear desulfurization refining system, and the screw rod and the shear teeth of the efficient continuous rubber regeneration equipment can adopt structures and sizes different from those of the high-temperature strong-shear desulfurization refining system according to the requirements of the strength of a shear force field.

Preferably, the shearing teeth are stepped fan-shaped surfaces; the upper side surfaces of the shearing teeth and the side surfaces of the shearing teeth form a step surface; the side surface is a T-shaped surface; the whole body is a combination of an annular tile and a stepped fan-shaped body.

The technical scheme of the invention at least has the following advantages and beneficial effects:

1. the invention designs different shearing tooth structures and groups, screw rods and complete machine structures, realizes controllable crosslinking of the waste rubber crosslinking net structure, avoids chain breakage of the rubber molecule main chain, and can obviously improve the quality of reclaimed rubber.

2. The invention fully utilizes the synergistic effect of heat and mechanical force on the waste rubber in the desulfurization process, greatly improves the mechanical dynamic decoupling force field strength, strengthens the mechanical shearing action, improves the regeneration efficiency and reduces the energy consumption.

3. The invention realizes the continuous production of waste rubber regeneration and solves the problem of uneven regeneration effect of the traditional high-temperature high-pressure dynamic desulfurization method.

4. The invention realizes the full-closed regeneration processing process, has short high-temperature action time, adopts a forced cooling system in the low-temperature plasticizing process, controls the temperature to be about 5-10 ℃, does not generate cracked gas and has no environmental pollution problem.

5. The invention combines the thermal-mechanochemical decoupling under the high-temperature condition with the mechanochemical plasticizing process under the low-temperature condition, improves the efficiency of the waste rubber decoupling and plasticizing links, changes the high-energy consumption plasticizing process which needs a plurality of refiners to refine for a long time after the decoupling is finished in the prior art, and improves the plasticizing quality and the energy efficiency of the rubber material.

6. According to the invention, through the structural design of the screw and the shearing teeth, the shearing force field strength is adjusted and the de-linked plasticizing process is adopted, so that the environment-friendly high-quality regeneration of different types of waste rubber can be realized.

7. According to the invention, the matching of the screw edges and the shearing teeth is used as a shearing area, so that on one hand, the shearing area can be enlarged, and on the other hand, the torque force which can be borne by the screw can be enhanced; can be used for mechanically shearing and uncoupling high-strength vulcanized rubber particles.

8. According to the invention, by designing screw parameters and adopting a wide thread deep screw groove, the shearing teeth are deep into the root of the screw groove to form an inward shearing area, and an external shearing area is formed in the structure in the prior art, so that the torque born by the screw is large.

Drawings

FIG. 1 is an overall view of the present invention;

FIG. 1 is a schematic diagram of an efficient continuous rubber recycling plant.

FIG. 2 is a schematic diagram of a shear tooth structure of an efficient continuous rubber recycling apparatus.

FIG. 3 is a side sectional view of a high efficiency continuous rubber recycling apparatus.

FIG. 4 is a view showing the development of the shear teeth and screw flights of a high-efficiency continuous rubber recycling apparatus.

FIG. 5 is a different form of shear tooth for an efficient continuous rubber reclaiming apparatus; (a) is a rectangular cutting tooth; (b) is an arc-shaped shearing tooth; (c) is a corrugated cutting tooth; (d) is a scattered point type shearing tooth;

FIG. 6 is a view of the combination of the shear teeth and the barrel of an efficient continuous rubber recycling apparatus;

1-high-temperature high-speed stirring device, 2-constant-temperature storage hopper, 3-section constant-temperature quantitative metering conveying device, 4-driving system, 5-transmission system, 6-frame, 7-high-temperature strong-shearing desulfurization refining system, 8-cooling system, 9-machine barrel, 10-screw, 11-heating system, 12-shearing screw rib, 13-shearing tooth, 14-sealing gasket, 15-front-end conveying section, 16-strong-shearing refining section, 17-tail-end conveying section, 18-machine head, 19-section constant-temperature quantitative metering conveying device, 20-low-temperature strong-shearing plasticizing molding system, 21-shaping device, 22-screw root diameter surface, 23-shearing tooth bottom surface, 24-machine barrel inner surface and 25-screw rib top surface, 26-shearing helical edge side face, 27-shearing tooth side face, 28-rectangular shearing tooth, 29-arc shearing tooth, 30-corrugated shearing tooth, 31-scattered point type shearing tooth and 32-T-shaped face; 33-upper side of the shear teeth;

Detailed Description

The invention is described below with reference to the accompanying drawings and specific embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used. Such terms are merely used to facilitate describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

It should also be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-6, the efficient continuous waste rubber regeneration equipment of the present invention comprises a high-temperature high-speed stirring device 1, a constant-temperature storage hopper 2, a first-stage constant-temperature quantitative metering and conveying device 3, a high-temperature strong-shear desulfurization refining system 7, a second-stage constant-temperature quantitative metering and conveying device 19, a low-temperature strong-shear plasticizing and forming system 20, a shaping device 21, a driving system 4, a transmission system 5, a cooling system 8, a heating system 11, a frame 6, etc.;

the high-temperature high-speed stirring device 1 is fixed on the frame 6, the discharge port of the high-temperature high-speed stirring device 1 is connected with the feed inlet of the constant-temperature storage hopper 2, the discharge port of the constant-temperature storage hopper 2 is fixedly connected with the feed inlet of the constant-temperature quantitative metering and conveying device 3, and the discharge port of the constant-temperature quantitative metering and conveying device 3 is connected with the feed inlet of the high-temperature strong-shear desulfurization refining system 7;

the discharge port of the high-temperature strong shearing desulfurization refining system 7 is connected with the feed port of the low-temperature strong shearing plasticizing molding system 20 through a two-section constant-temperature quantitative metering conveying device 19, and the discharge port of the low-temperature strong shearing plasticizing molding system 20 is externally connected with a shaping device 21;

the high-temperature strong-shearing desulfurization refining system 7 comprises a screw 10, a machine barrel 9, a machine head 18, shearing teeth 13, a sealing gasket 14 and the like; the machine barrel 9 is fixed on the machine frame 6, a square hole is formed in the machine barrel 9 in the circumferential direction, the shearing teeth 13 are inserted into the square hole for fixing, the shearing teeth 13 and the machine barrel 9 are sealed through sealing gaskets 14, and the shearing teeth 13 are sector-shaped;

further, as shown in fig. 2, the cutting bit extends into the cylinder 9; the tail end of the machine barrel 9 is fixedly connected with a machine head 18, a screw 10 is positioned in an internal cavity formed by the machine barrel 9 and the machine head 18 and is fixedly connected with the transmission system 5, and the screw 10 can perform rotary motion in the machine barrel 9;

the screw 10 is divided into a front end conveying section 15, a strong shearing refining section 16 and a tail end conveying section 17 in the region, the screw edge of the screw 10 in the strong shearing refining section 16 is a shearing screw edge 12 and is in a discontinuous cutting shape, and an annular non-screw edge space formed by the shearing screw edge 12 corresponds to the part of the shearing tooth 13 extending into the machine barrel 9;

further, as shown in fig. 3 and 4, the gaps between the cutting land 23 of the cutting tooth 13 and the screw root diameter surface 22, the cutting tooth side surface 27 and the cutting flight side surface 26, and the flight top surface 25 and the barrel inner surface 24 form strong cutting regions.

As a preferred embodiment of the present invention, the cutting teeth 13 may be designed in different forms according to the cutting ability, such as one or more combinations of rectangular cutting teeth 28, arc-shaped cutting teeth 29, wave-shaped cutting teeth 30, scattered point type cutting teeth 31, etc. as shown in fig. 4, and each type of cutting teeth may be combined and matched according to the requirement.

As a preferred embodiment of the invention, the number of the shearing teeth 13 is designed according to the required shearing strength, the number of the shearing teeth in one circle in the circumferential direction is 2 to 4, and the number of the groups along the axial direction of the cylinder 9 is at least 8; the shearing teeth 13 at different circumferential positions can be designed into different types and different sizes, the shearing teeth 13 at different axial positions can be designed into different types, different sizes and different quantities, and the shearing screw ribs 12 of the screw 10 are correspondingly adjusted.

As a preferred embodiment of the present invention, the ratio of the angles of the cutting teeth 13 in the circumferential direction (θ/360 × the number of cutting teeth) is designed according to the strength of the cutting teeth and the cylinder and the cutting ability of the cutting teeth, and the ratio of the angles satisfies 30% to 70%.

As a preferred embodiment of the present invention, the gap between the side surface 27 of the cutting tooth 13 and the cutting screw rib side surface 26 of the screw 10 is designed according to the required cutting strength, and can be in the range of 0.2-1.0 mm; the minimum clearance between the bottom surface 23 of the shearing tooth 13 and the screw root diameter surface 22 of the screw 10 is designed according to the required shearing strength, and the range can be 0.2-1.0 mm.

Furthermore, the gap between the side surface of the shearing tooth and the side surface of the shearing screw ridge of the screw is designed according to the required shearing strength and can be 0.15-1.0 mm; the minimum clearance between the bottom surface of the shearing tooth and the screw root diameter surface of the screw is designed according to the required shearing strength and can be 0.15-1.0 mm.

As a preferred embodiment of the present invention, the low-temperature strong-shear plasticizing and molding system 20 adopts the same strong-shear design as the high-temperature strong-shear desulfurization refining system 7, and the screw and the shear teeth thereof can adopt structures and sizes different from those of the high-temperature strong-shear desulfurization refining system 7 according to the requirements of shear strength.

As a preferred embodiment of the present invention, the shearing teeth 13 are stepped sectors; the upper side surface 33 of the shearing tooth and the side surface 27 of the shearing tooth form a stepped surface; the side surface is a T-shaped surface 32; the whole body is a combination of an annular tile and a stepped fan-shaped body.

The embodiment of the invention also relates to a high-efficiency continuous waste rubber regeneration preparation method, which comprises the following steps:

1) firstly, adding the waste rubber material, the softening agent, the activating agent and the like which are prepared in advance into a high-temperature high-speed stirring device 1, setting the set temperature of the high-temperature high-speed stirring device 1 to be 240-280 ℃, stirring at a high speed for 30-40min, preheating the raw materials in the high-speed stirring process, fully dispersing and mixing the waste rubber material, the regenerating agent and the like, and preparing for a subsequent refining link;

2) after the raw materials are mixed, opening a discharge port of the high-temperature high-speed stirring device 1, and enabling the mixed raw materials to fall into a constant-temperature storage hopper 2; the materials in the constant temperature storage hopper 2 enter a high temperature strong shearing desulfurization refining system 7 under the conveying action of a section of constant temperature quantitative metering conveying device 3;

3) the rubber material in the high-temperature strong-shearing desulfurization refining system 7 enters the strong-shearing refining section 16 under the conveying action of the screw 10, and is subjected to strong shearing action in strong shearing areas respectively formed by the bottom surface 23 of the shearing tooth 13, the root diameter surface 22 of the screw, the side surface 27 of the shearing tooth, the side surface 26 of the shearing tooth, the top surface 25 of the screw and the inner surface 24 of the machine barrel, and meanwhile, the temperature control system controls the temperature of the rubber material in the machine barrel 9, the temperature is set to be 240 plus 280 ℃, the rotating speed of the screw is set to be 40-60r/min, and the rubber material realizes high-efficiency decoupling of the waste rubber under the action of high temperature, strong shearing and a regenerant;

4) the thermal-mechanical chemical de-linking rubber material enters a low-temperature strong-shearing plasticizing forming system 20 through a two-section constant-temperature quantitative metering conveying device 19, the cooling system 8 carries out forced cooling, the rubber material carries out a low-temperature strong-shearing plasticizing process in the low-temperature strong-shearing plasticizing forming system 20, the forced cooling temperature is set to be 5-10 ℃, the rubber material is rapidly cooled, shearing, extruding, tangling and plasticizing of granular de-linking rubber particles are realized through the action of a strong mechanical shearing force field, and finally, a sheet is directly extruded through a shaping device 21.

As a preferred embodiment of the invention, it should be noted that, in the production process, the working efficiency of the high-temperature high-speed stirring device 1 should be matched with the efficiency of the subsequent high-temperature strong shearing refining process and the low-temperature plasticizing process, so as to ensure that the material shortage phenomenon does not occur in the constant-temperature storage hopper 2, thereby realizing the continuous production of the reclaimed rubber.

The efficient continuous rubber regeneration equipment provided by the invention realizes continuous production of regenerated rubber, reduces the problem of uneven regeneration effect of the traditional high-temperature high-pressure dynamic desulfurization method, fully utilizes the synergistic effect of heat and mechanical force in the rubber desulfurization process, improves the regeneration efficiency, reduces the energy consumption, and can obviously improve the quality of the regenerated rubber.

The above embodiments are merely illustrative and not restrictive of the technical solutions of the present invention. Any modification or partial replacement without departing from the spirit of the present invention should be covered in the scope of the claims of the present invention.

Claims

1. The utility model provides a high-efficient serialization rubber waste regeneration is equipped which characterized in that: the device comprises a high-temperature high-speed stirring device (1), a constant-temperature storage hopper (2), a first constant-temperature quantitative metering and conveying device (3), a high-temperature strong-shearing desulfurization refining system (7), a second constant-temperature quantitative metering and conveying device (19), a low-temperature strong-shearing plasticizing and forming system (20), a shaping device (21), a driving system (4), a transmission system (5), a cooling system (8), a heating system (11) and a rack (6);

the high-temperature high-speed stirring device (1) is fixed on the frame (6), a discharge port of the high-temperature high-speed stirring device (1) is connected with a feed inlet of the constant-temperature storage hopper (2), a discharge port of the constant-temperature storage hopper (2) is fixedly connected with a feed inlet of the constant-temperature quantitative metering and conveying device (3), and a discharge port of the constant-temperature quantitative metering and conveying device (3) is connected with a feed inlet of the high-temperature strong-shear desulfurization refining system (7);

the discharge port of the high-temperature strong shearing desulfurization refining system (7) is connected with the feed port of the low-temperature strong shearing plasticizing molding system (20) through a two-section constant-temperature quantitative metering conveying device (19), and the discharge port of the low-temperature strong shearing plasticizing molding system (20) is externally connected with a shaping device (21);

the high-temperature strong-shearing desulfurization refining system (7) comprises a screw (10), a machine barrel (9), a machine head (18), shearing teeth (13) and a sealing gasket (14); the machine barrel (9) is fixed on the machine frame (6), a square hole is formed in the machine barrel (9) along the circumferential direction, the shearing teeth (13) are inserted into the square hole for fixing, the shearing teeth (13) and the machine barrel (9) are sealed through sealing gaskets (14), and the shearing teeth (13) are sector-shaped;

the cutting tooth head extends into the machine barrel (9); the tail end of the machine barrel (9) is fixedly connected with the machine head (18), the screw (10) is positioned in an internal cavity formed by the machine barrel (9) and the machine head (18) and is fixedly connected with the transmission system (5), and the screw (10) can rotate in the machine barrel (9);

the screw (10) is divided into a front-end conveying section (15), a strong-shearing refining section (16) and a tail-end conveying section (17) in a region, the screw edge of the screw (10) in the strong-shearing refining section (16) is a shearing screw edge (12) and is in a discontinuous cutting shape, and an annular non-screw-edge space formed by the shearing screw edge (12) corresponds to the part of the shearing tooth (13) which penetrates into the machine barrel (9);

gaps between the bottom surface (23) of the cutting tooth (13) and the root diameter surface (22) of the screw, between the side surface (27) of the cutting tooth and the side surface (26) of the cutting screw rib, and between the top surface (25) of the cutting screw rib and the inner surface (24) of the machine barrel form a strong cutting area;

the shearing teeth (13) can be designed into different forms according to the shearing capacity, one or more of rectangular shearing teeth (28), arc-shaped shearing teeth (29), corrugated shearing teeth (30) and scattered point type shearing teeth (31) are combined, and the shearing teeth of various types can be combined and matched for use according to the requirements;

the number of the shearing teeth (13) is designed according to the required shearing strength, the number of the shearing teeth in one circle in the circumferential direction is 2-4, and the number of groups along the axial direction of the machine barrel (9) is at least 8; the shearing teeth (13) positioned at different circumferential positions can be designed into different types and different sizes, the shearing teeth (13) positioned at different axial positions can be designed into different types, different sizes and different quantities, and the shearing screw edges (12) of the screw (10) are correspondingly adjusted;

the angle proportion of the shearing teeth (13) along the circumferential direction is designed according to the strength of the shearing teeth and the machine barrel and the shearing capacity of the shearing teeth, and the angle proportion meets 30% -70%;

the clearance between the shearing tooth flank (27) and the shearing screw edge flank (26) of the screw (10) is designed according to the required shearing strength and ranges from 0.2 mm to 1.0 mm; the minimum clearance between the bottom surface (23) of the shearing tooth (13) and the root diameter surface (22) of the screw (10) is designed according to the required shearing strength and ranges from 0.2 mm to 1.0 mm;

the low-temperature strong shearing plasticizing molding system (20) adopts the same strong shearing design as the high-temperature strong shearing desulphurization refining system (7), and a screw rod and a shearing tooth of the low-temperature strong shearing plasticizing molding system can adopt a structure and a size which are different from those of the high-temperature strong shearing desulphurization refining system (7) according to the shearing strength requirement;

the shearing teeth (13) are stepped fan-shaped surfaces; the upper side surface (33) of the shearing tooth, and the side surface (27) of the shearing tooth form a stepped surface; the side surface is a T-shaped surface (32) and is an integral combination of an annular tile and a stepped fan-shaped body;

the preparation method of the efficient continuous waste rubber regeneration equipment comprises the following steps:

1) firstly, adding the waste rubber material, the softening agent and the activating agent which are prepared in advance into a high-temperature high-speed stirring device (1), setting the temperature of the high-temperature high-speed stirring device (1) to be 240-280 ℃, stirring at a high speed for 30-40min, and preheating the raw materials in the high-speed stirring process to fully disperse and mix the waste rubber material and the regenerating agent so as to prepare for a subsequent refining link;

2) after the raw materials are mixed, opening a discharge hole of the high-temperature high-speed stirring device (1), and enabling the mixed raw materials to fall into a constant-temperature storage hopper (2); the materials in the constant-temperature storage hopper (2) enter a high-temperature strong-shear desulfurization refining system (7) under the conveying action of a section of constant-temperature quantitative metering conveying device (3);

3) rubber materials in the high-temperature strong-shearing desulfurization refining system (7) enter a strong-shearing refining section (16) under the conveying action of a screw (10), and are subjected to strong shearing action in strong shearing areas formed by the bottom surface (23) of a shearing tooth (13), the root diameter surface (22) of the screw, the side surface (27) of the shearing tooth, the side surface (26) of a shearing spiral rib, the top surface (25) of the spiral rib and the inner surface (24) of a machine barrel, meanwhile, a temperature control system controls the temperature of the rubber materials in the machine barrel (9), the temperature is set to be 240 ℃ and 280 ℃, the rotating speed of the screw is set to be 40-60r/min, and the rubber materials realize high-efficiency decoupling of waste rubber under the action of high temperature, strong shearing and a regenerant;

4) the method comprises the steps that the thermal-mechanical chemical decoupling rubber material enters a low-temperature strong-shearing plasticizing forming system (20) through a two-section constant-temperature quantitative metering conveying device (19), a cooling system (8) carries out forced cooling, the rubber material carries out a low-temperature strong-shearing plasticizing process in the low-temperature strong-shearing plasticizing forming system (20), the forced cooling temperature is set to be 5-10 ℃, the rubber material is rapidly cooled, shearing, extruding, tangling and plasticizing of granular decoupling rubber particles are achieved through the action of a strong mechanical shearing force field, and finally, a sheet is directly extruded through a shaping device (21).