A preparation device for modified asphalt

Abstract

The invention relates to the technical field of asphalt preparation, and specifically to a modified asphalt preparation device, comprising a tank body, a support rod and a controller; the lower end of the tank body is fixedly connected to a No. 1 motor; the output end of the No. 1 motor is fixedly connected to a rotating shaft; the other end of the rotating shaft extends to the entrance of the inner cavity of the tank body, and the outer wall of the rotating shaft is provided with a circular ring with a sliding connection; the outer ring surface of the arc is fixedly connected to a crushing knife; through the mutual cooperation of the inclined plate, the No. 1 motor and the fan, it is ensured that the rubber is crushed more thoroughly, thereby preventing the phenomenon that the rubber particles will stick to the knife head and the inner wall of the tank body during the crushing of the wet rubber, so that the rubber particles can be dried, so that the rubber particles do not need to be taken out for drying, thereby improving the drying efficiency; at the same time, the preparation efficiency and quality of the asphalt are improved; at the same time, rubber particles of different sizes can adapt to different types of asphalt.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt preparation, in particular to a preparation device for modified asphalt. Background Art

[0002] Modified asphalt is an asphalt binder made by adding rubber, resin, high molecular polymer, ground rubber powder or other fillers, such as modifiers, or taking measures such as mild oxidation of asphalt to improve the performance of asphalt or asphalt mixture; rubber is indispensable for the preparation of modified asphalt, and the smaller the rubber particles, the higher the quality of the modified asphalt; but when processing wet rubber, since rubber will be sticky in wet conditions, when the rubber is crushed to make rubber particles in the prior art, the rubber particles will not be crushed thoroughly, thereby affecting the variety of the modified asphalt; and some of the crushed rubber particles will stick to the crushing knife due to a slight stickiness, thereby affecting the crushing effect.

[0003] For example, a Chinese patent with application number CN110815638A discloses a rubber crushing device for rubber production and processing, including a first support plate, support feet are fixed by welding on both sides of the bottom of the first support plate at axially symmetrical positions, and telescopic rods are threadedly connected on both sides of the upper part of the first support plate at axially symmetrical positions. This technical solution can transport the rubber to the inside of the box by providing a feed inlet, crush the rubber by a crushing roller, and perform multi-stage screening on the rubber by providing multiple screens; this technical solution has a good effect on rubber crushing and screening; however, this technical solution can only screen rubber particles, and cannot be applied to rubbers of different sizes, and thus cannot prepare modified asphalts of different varieties, which causes limitations of this technical solution.

[0004] In view of this, in order to overcome the above technical problems, the present invention proposes a preparation device for modified asphalt, which solves the above technical problems. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art, the present invention proposes a modified asphalt preparation device. In the present invention, the inclined plate, the first motor and the fan cooperate with each other to ensure that the rubber is crushed more thoroughly, thereby preventing the rubber particles from sticking to the cutter head and the inner wall of the tank body during the rubber crushing process under moisture, so that the rubber particles can be dried, so that the rubber particles do not need to be taken out for drying, thereby improving the drying efficiency; at the same time, the preparation efficiency and quality of asphalt are improved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the preparation equipment of a modified asphalt described in the present invention comprises a tank body, a support rod and a controller; the lower end of the tank body is fixedly connected to a No. 1 motor; the output end of the No. 1 motor is fixedly connected to a rotating shaft; the other end of the rotating shaft extends to the entrance of the inner cavity of the tank body, and a circular ring is slidably sleeved on the outer wall of the rotating shaft; a breaking knife is fixedly connected to the outer ring surface of the circular arc; a soft ring is obliquely sleeved on the outer wall of the rotating shaft, and an inclined plate is sleeved on the outer wall of the soft ring; the inclined plate is a flat quadrilateral, and a sectional plate is arranged between the four relatively small faces of the inclined plate and the inner wall opposite to the tank body. The connecting plates are arc-shaped, and the connecting plates between two adjacent ones are arranged in sealing contact, and the slope of the upper ends of the connecting plates is inclined from the inner wall of the tank body to the center of the inner cavity; two relatively small faces of the inclined plate are in contact with the connecting plates, and the other smaller face is connected to the connecting plate through a membrane, and there is a gap between the other smaller face and the connecting plate; a fan is fixedly connected to the outer wall of the tank body; an air duct is opened inside the tank body; the output end of the air duct is connected to the output end of the fan, and the first air outlet of the air duct is located on the inclined surface relative to the inclined plate; the controller is used to control the automatic operation of the preparation equipment of modified asphalt.

[0007] During operation, due to the inadequacy of the existing technology, when the rubber is crushed to make rubber particles, the rubber particles are not crushed thoroughly, thereby affecting the quality of the modified asphalt; and some of the crushed rubber particles will stick to the crushing knife due to a slight stickiness, thereby affecting the crushing effect;

[0008] Therefore, in the present invention, a worker adds the rubber to be crushed to the entrance of the tank body; the controller controls to start the No. 1 motor, and the rotation of the No. 1 motor drives the rotating shaft to rotate, thereby driving the arc to rotate. The rotation of the ring causes the crushing knife to rotate, and then the crushing knife crushes the rubber; the rubber is crushed into rubber particles and falls onto the upper inclined plate. Since the ring and the rotating shaft are in a sliding connection, the bottom end surface of the ring is always in contact with the inclined plate, so that the crushing knife is always located one to two centimeters above the highest inclination of the inclined plate, and then the crushing knife always crushes the rubber particles on the inclined plate, so that the rubber crushing effect is better; when the No. 1 motor is started, the controller controls to start the fan at the same time, and the wind force of the fan is poured into the first air outlet from the output end, and blows the rubber particles with different gravity on the inclined plate to the gap between the inclined plate and the inner wall of the tank body, so that the gravity is relatively small The rubber particles are blown out by the wind force from the first air outlet, and fall from the gap between the upper inclined plate and the inner wall of the tank body, and then fall onto the lower inclined plate, where they are continued to be broken by the crushing knife below, while the rubber particles with relatively large gravity continue to remain on the upper inclined plate and are continued to be broken by the crushing knife; similarly, the wind force from another first air outlet causes the rubber particles with relatively small gravity to fall from the gap between the lower inclined plate and the inner wall of the tank body, and fall to the bottom of the tank body, where they are cleaned out from the tank body outlet by on-site staff; the rubber particles are dried by the wind force to ensure that the rubber does not stick to the blades and the tank body, thereby improving the drying efficiency; further ensuring the drying of the crushing knife and the inner wall of the tank body; at the same time, the rubber particles are screened to ensure that the rubber particles are broken thoroughly, further improving the quality of the modified asphalt;

[0009] The present invention ensures that the rubber is crushed more thoroughly through the cooperation of the inclined plate, the No. 1 motor and the fan, thereby preventing the rubber particles from sticking to the cutter head and the inner wall of the tank body during the crushing of the rubber in a wet state, thereby drying the rubber particles, eliminating the need for taking out for drying, and improving the drying efficiency; at the same time, the preparation efficiency and quality of asphalt are improved.

[0010] Preferably, the outer wall of the tank body is symmetrically fixed with a No. 2 motor; the output shaft of the No. 2 motor passes through the tank body and is fixed with the outer wall of the corresponding inclined plate; when working, the No. 2 motor is started by the controller to drive the inclination angle of the inclined plate to change, so that the gap between the inclined plate and the tank body changes, and when the inclination angle of the inclined plate changes, the inclined plate will move up or down against the ring, and drive the crushing knife to move up or down; thereby limiting the falling of rubber particles of other sizes, and then applying it to different types of modified asphalt, the rubber crushed by the upper crushing knife, and at the same time, by changing the inclination of the inclined plate and cooperating with the upper and lower crushing knives, the rubber particles are crushed more thoroughly, further improving the use of different types of modified asphalt, and making the use of rubber particles wider; at the same time, the blowing force of the wind is greater than the gravity of the rubber particles. By controlling the size of the wind force, the greater the wind force, the greater the blowing force, so that the blown rubber particles are larger, and then the falling of rubber particles of different gravities is controlled; at the same time, rubber particles of different sizes can adapt to different types of asphalt.

[0011] Preferably, a baffle is fixedly connected to the inner wall of the tank body and located above the corresponding first air outlet; the cross-section of the baffle is triangular; during operation, the wind can be diverted through the setting of the baffle to ensure that the wind is always blowing to one place, thereby ensuring that the wind is always blowing at the inclination angle of the inclined plate, and then blowing the rubber particles with relatively small gravity on the inclined plate into the gap. The baffle is set in a triangular shape, so that the baffle will not hinder the falling of the rubber particles during the falling process; at the same time, the blowing of the wind can also screen the rubber particles on the inclined plate, further improving the screening effect.

[0012] Preferably, two adjacent inclined plates are arranged oppositely; when working, the inclined plates are arranged oppositely so that the rubber particles on the upper inclined plate will not fall to the bottom of the tank body, thereby performing secondary crushing on the rubber particles and crushing them into the required rubber particles, making the rubber crushing more thorough and improving the efficiency of the rubber crushing.

[0013] Preferably, the gap between the lower inclined plate and the inner wall of the tank body is smaller than the gap between the upper inclined plate and the inner wall of the tank body; during operation, the size of the gap between the two inclined plates ensures that the upper rubber particles will not fall from the gap between the lower inclined plate and the tank body to the bottom of the inner cavity of the tank body when they fall, thereby screening the rubber particles and improving the quality of the rubber particles.

[0014] Preferably, a third air outlet is provided below the inclined plate and on the inner wall of the tank body; the third air outlet is communicated with the air duct, and the air outlet of the third air outlet is oriented toward the discharge port; during operation, the rubber particles at the bottom of the inner cavity of the tank body are blown through the setting of the third air outlet, and then the rubber particles are blown to the outlet of the tank body, which is convenient for collection by the staff and reduces labor.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The present invention ensures that the rubber is broken more thoroughly through the cooperation of the inclined plate, the No. 1 motor and the fan, thereby preventing the rubber particles from sticking to the cutter head and the inner wall of the tank body during the rubber breaking process under damp conditions, thereby drying the rubber particles, so that the rubber particles do not need to be taken out for drying, thereby improving the drying efficiency; at the same time, the preparation efficiency and quality of asphalt are improved;

[0017] 2. The present invention can guide the wind force by setting the baffle to ensure that the wind force is always blown to one place, thereby ensuring that the wind force is always blown to the inclined angle of the inclined plate, and then the rubber particles with relatively small gravity on the inclined plate are blown into the gap. The baffle is set in a triangular shape, so that the baffle will not hinder the falling of the rubber particles during the falling process; at the same time, the blowing of the wind can also screen the rubber particles on the inclined plate, further improving the screening effect.

[0018] 3. The present invention arranges the inclined plates in opposite directions, so that the rubber particles on the upper inclined plates will not fall to the bottom of the tank body, thereby performing secondary crushing on the rubber particles and crushing them into required rubber particles, making the rubber crushing more thorough and improving the efficiency of crushing the rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention;

[0021] Figure 2 yes Figure 1 A cross-sectional view of

[0022] Figure 3 This is a three-dimensional diagram of the connection between the connecting plate and the tank body of the present invention;

[0023] Figure 4 is a three-dimensional diagram of an inclined plate of the present invention;

[0024] Figure 5 It is the connection diagram between the ring and the rotating shaft;

[0025] In the figure: 1. tank body; 2. No. 1 motor; 3. rotating shaft; 4. crushing knife; 5. soft ring; 6. inclined plate; 7. connecting plate; 8. fan; 9. air duct; 10. No. 2 motor; 11. baffle. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] like Figures 1 to 5 As shown, a modified asphalt preparation device described in the present invention comprises a tank body 1, a support rod and a controller; the lower end of the tank body 1 is fixedly connected to a No. 1 motor 2; the output end of the No. 1 motor 2 is fixedly connected to a rotating shaft 3; the other end of the rotating shaft 3 extends to the inner cavity entrance of the tank body 1, and a circular ring is slidably sleeved on the outer wall of the rotating shaft 3; a breaking knife 4 is fixedly connected to the outer ring surface of the circular arc; a soft ring 5 is obliquely sleeved on the outer wall of the rotating shaft 3, and an inclined plate 6 is sleeved on the outer wall of the soft ring 5; the inclined plate 6 is a flat quadrilateral, and a connecting plate with a circular arc cross section is provided between the four relatively small faces of the inclined plate 6 and the inner wall opposite to the tank body 1 7, the connecting plates 7 between two adjacent ones are arranged in sealing contact, and the slope of the upper end of the connecting plate 7 is inclined from the inner wall of the tank body 1 to the center of the inner cavity; two relatively small faces of the inclined plate 6 are in contact with the connecting plate 7, the other smaller face is connected to the connecting plate 7 through a membrane, and there is a gap between the other smaller face and the connecting plate 7; the outer wall of the tank body 1 is fixedly connected with a fan 8; the interior of the tank body 1 is provided with an air duct 9; the output end of the air duct 9 is connected with the output end of the fan 8, and the first air outlet of the air duct 9 is located on the inclined surface relative to the inclined plate 6; the controller is used to control the automatic operation of the preparation equipment of the modified asphalt.

[0028] During operation, due to the inadequacy of the prior art, when the rubber is crushed to produce rubber particles, the rubber particles are not crushed thoroughly, thereby affecting the quality of the modified asphalt; and some of the crushed rubber particles will stick to the crushing knife 4 due to a slight amount of stickiness, thereby affecting the crushing effect;

[0029] The rubber that needs to be crushed is added to the inlet of the tank body 1 by a staff member in the present invention; the controller controls to start the No. 1 motor 2, and the rotation of the No. 1 motor 2 drives the rotating shaft 3 to rotate, thereby driving the arc to rotate. The rotation of the ring causes the crushing knife 4 to rotate, and then the crushing knife 4 crushes the rubber; the rubber is crushed into rubber particles and falls onto the upper inclined plate 6. Since the ring and the rotating shaft 3 are in a sliding connection, the bottom end surface of the ring is always in contact with the inclined plate 6, so that the crushing knife 4 is always located one to two centimeters above the highest inclination of the inclined plate 6, and then the crushing knife 4 always crushes the rubber particles on the inclined plate 6, so that the rubber crushing effect is better; when the No. 1 motor 2 is started, the controller controls to start the fan 8 at the same time, and the wind force of the fan 8 is poured into the first air outlet from the output end, and the rubber particles with different gravity on the inclined plate 6 are blown to the gap between the inclined plate 6 and the inner wall of the tank body 1, so that the gravity is relatively The smaller rubber particles are blown out by the wind force in the first air outlet, and fall from the gap between the upper inclined plate 6 and the inner wall of the tank body 1, and then fall onto the lower inclined plate 6, and are continued to be broken by the lower breaking knife 4, while the rubber particles with relatively large gravity continue to remain on the upper inclined plate 6 and are continued to be broken by the breaking knife 4; similarly, the wind force in another first air outlet blows, so that the rubber particles with relatively small gravity fall from the gap between the lower inclined plate 6 and the inner wall of the tank body 1 in the second breakage, and fall to the bottom of the tank body 1, and are then cleaned out from the outlet of the tank body 1 by the on-site staff; the rubber particles are dried by the blowing of wind force to ensure that the rubber does not stick to the blade and the tank body 1, thereby improving the drying efficiency; further ensuring the drying of the breaking knife 4 and the inner wall of the tank body 1; at the same time, the rubber particles are screened, so that the rubber particles are broken thoroughly, further improving the quality of the modified asphalt;

[0030] The present invention ensures that the rubber is crushed more thoroughly through the cooperation of the inclined plate 6, the No. 1 motor 2 and the fan 8, thereby preventing the rubber particles from sticking to the cutter head and the inner wall of the tank body 1 during the crushing process of the wet rubber, thereby drying the rubber particles, eliminating the need for taking out for drying, and improving the drying efficiency; at the same time, the preparation efficiency and quality of asphalt are improved.

[0031] As an embodiment of the present invention, the outer wall of the tank body 1 is symmetrically fixedly connected with a second motor 10; the output shaft of the second motor 10 passes through the tank body 1 and is fixedly connected to the outer wall of the corresponding inclined plate 6; when working, the second motor 10 is started by the controller to drive the inclination angle of the inclined plate 6 to change, so that the gap between the inclined plate 6 and the tank body 1 changes. When the inclination angle of the inclined plate 6 changes, the inclined plate 6 will move up or down against the ring and drive the crushing knife 4 to move up or down; thereby limiting the falling of rubber particles of other sizes, and then using On different types of modified asphalt, the upper breaking knife 4 breaks the rubber, and at the same time, by changing the inclination of the inclined plate 6 and cooperating with the upper and lower breaking knives 4, the rubber particles are broken more thoroughly, further improving the use of different types of modified asphalt, and making the use of rubber particles wider; at the same time, the blowing force of the wind is greater than the gravity of the rubber particles. By controlling the size of the wind force, the greater the wind force, the greater the blowing force, the larger the blown rubber particles, and then the rubber particles of different gravities are controlled to fall; at the same time, rubber particles of different sizes can adapt to different types of asphalt.

[0032] As an embodiment of the present invention, a baffle 11 is fixedly connected to the inner wall of the tank body 1 and located above the corresponding first air outlet; the cross-section of the baffle 11 is triangular; when working, the wind can be diverted through the setting of the baffle 11 to ensure that the wind is always blowing to one place, thereby ensuring that the wind is always blowing at the inclination angle of the inclined plate 6, and then the rubber particles with relatively small gravity on the inclined plate 6 are blown into the gap. The baffle 11 is set in a triangular shape, so that the baffle 11 will not hinder the falling of the rubber particles during the falling process; at the same time, the blowing of the wind can also screen the rubber particles on the inclined plate 6, further improving the screening effect.

[0033] As an embodiment of the present invention, two adjacent inclined plates 6 are oppositely arranged; when working, the inclined plates 6 are oppositely arranged so that the rubber particles on the upper inclined plate 6 will not fall to the bottom of the tank body 1, thereby performing secondary crushing on the rubber particles and crushing them into the required rubber particles, making the rubber crushing more thorough and improving the efficiency of the rubber crushing.

[0034] As an embodiment of the present invention, the gap between the lower inclined plate 6 and the inner wall of the tank body 1 is smaller than the gap between the upper inclined plate 6 and the inner wall of the tank body 1; during operation, the size of the gap between the two inclined plates 6 is used to ensure that the upper rubber particles will not fall from the gap between the lower inclined plate 6 and the tank body 1 to the bottom of the inner cavity of the tank body 1 when they fall, thereby screening the rubber particles and improving the quality of the rubber particles.

[0035] As an embodiment of the present invention, a third air outlet is provided below the inclined plate 6 and on the inner wall of the tank body 1; the third air outlet is communicated with the air duct 9, and the air outlet of the third air outlet is oriented toward the discharge port; during operation, the rubber particles at the bottom of the inner cavity of the tank body 1 are blown through the setting of the third air outlet, and then the rubber particles are blown to the outlet of the tank body 1, which is convenient for collection by the staff and reduces labor.

[0036] The specific workflow is as follows:

[0037] The staff adds the rubber to be crushed to the entrance of the tank body 1; the controller controls the start of the No. 1 motor 2, and the rotation of the No. 1 motor 2 drives the rotating shaft 3 to rotate, thereby driving the arc to rotate. The rotation of the ring causes the crushing knife 4 to rotate, and then the crushing knife 4 crushes the rubber; the rubber is crushed into rubber particles and falls onto the upper inclined plate 6. Since the ring and the rotating shaft 3 are in sliding connection, the bottom end surface of the ring is always in contact with the inclined plate 6, so that the crushing knife 4 is always located one to two centimeters above the highest inclination of the inclined plate 6, and then the crushing knife 4 always crushes the rubber particles on the inclined plate 6, so that the rubber crushing effect is better; when the No. 1 motor 2 is started, At the same time, the controller starts the fan 8, and the wind force of the fan 8 is poured into the first air outlet from the output end, and blows the rubber particles with different gravity on the inclined plate 6 to the gap between the inclined plate 6 and the inner wall of the tank body 1, so that the rubber particles with relatively small gravity are blown out by the wind force in the first air outlet, and fall from the gap between the upper inclined plate 6 and the inner wall of the tank body 1, and then fall onto the lower inclined plate 6, and are continued to be broken by the crushing knife 4 below, while the rubber particles with relatively large gravity continue to stay on the upper inclined plate 6 and are continued to be broken by the crushing knife 4; similarly, through the blowing of the wind force in another first air outlet, the rubber particles with relatively small gravity are broken again from the lower inclined plate 6 and the inner wall of the tank body 1, and falls to the bottom of the tank body 1, and is then cleaned out from the outlet of the tank body 1 by the on-site staff; the rubber particles are blown dry by wind to ensure that the rubber does not stick to the blade and the tank body 1, thereby improving the drying efficiency; further ensuring the drying of the crushing knife 4 and the inner wall of the tank body 1; at the same time, the rubber particles are screened to make the rubber particles completely crushed, further improving the quality of the modified asphalt; the controller controls the start of the second motor 10 to drive the inclination angle of the inclined plate 6 to change, so that the gap between the inclined plate 6 and the tank body 1 changes, and when the inclination angle of the inclined plate 6 changes, the inclined plate 6 will push the ring upward The rubber particles of other sizes are limited to fall, and then applied to different types of modified asphalt. The rubber crushed by the upper crushing knife 4 is matched with the upper and lower crushing knives 4 by changing the inclination of the inclined plate 6, so that the rubber particles are crushed more thoroughly, and the use of different types of modified asphalt is further improved, so that the range of rubber particles is wider. At the same time, the blowing force of the wind is greater than the gravity of the rubber particles. By controlling the size of the wind force, the greater the wind force, the greater the blowing force, so that the blown rubber particles are larger, and then the falling of rubber particles of different gravities is controlled. At the same time, rubber particles of different sizes can adapt to different types of asphalt.By setting the baffle 11, the wind can be diverted to ensure that the wind blows to one place all the time, thereby ensuring that the wind blows to the inclined angle of the inclined plate 6 all the time, and then the rubber particles with relatively small gravity on the inclined plate 6 are blown into the gap. The baffle 11 is set in a triangular shape, so that the baffle 11 will not hinder the falling of the rubber particles during the falling process; at the same time, the blowing of the wind can also screen the rubber particles on the inclined plate 6, further improving the screening effect; the inclined plate 6 is set in the opposite direction, so that the rubber particles on the upper inclined plate 6 will not fall to the bottom of the tank body 1, and then The rubber particles are crushed twice and crushed into the required rubber particles, so that the rubber is crushed more thoroughly and the efficiency of crushing the rubber is improved; the gap between the two inclined plates 6 is adjusted to ensure that the upper rubber particles will not fall from the gap between the lower inclined plate 6 and the tank body 1 to the bottom of the inner cavity of the tank body 1 when they fall, thereby screening the rubber particles and improving the quality of the rubber particles; the third air outlet is set to blow the rubber particles at the bottom of the inner cavity of the tank body 1, so that the rubber particles are blown to the outlet of the tank body 1, which is convenient for the staff to collect and reduces labor. ;

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A modified asphalt preparation device, comprising a tank (1), a support rod and a controller; characterized in that: The lower end of the tank body (1) is fixedly connected to a No. 1 motor (2); the output end of the No. 1 motor (2) is fixedly connected to a rotating shaft (3); the other end of the rotating shaft (3) extends to the entrance of the inner cavity of the tank body (1), and a circular ring is slidably sleeved on the outer wall of the rotating shaft (3); a crushing knife (4) is fixedly connected to the outer ring surface of the circular ring; a soft ring (5) is obliquely sleeved on the outer wall of the rotating shaft (3), and an inclined plate (6) is sleeved on the outer wall of the soft ring (5); the inclined plate (6) is a flat quadrilateral, and a connecting plate (7) with a circular arc cross section is provided between the four relatively small faces of the inclined plate (6) and the inner wall opposite to the tank body (1), and a sealing connection is formed between two adjacent connecting plates (7). The tank body (1) is provided with a contact arrangement, wherein the slope of the upper end of the connecting plate (7) is inclined from the inner wall of the tank body (1) to the center of the inner cavity; two relatively small surfaces of the inclined plate (6) are in contact with the connecting plate (7), one of the smaller surfaces is connected to the connecting plate (7) by a membrane, and a gap is formed between the other smaller surface and the connecting plate (7); a fan (8) is fixedly connected to the outer wall of the tank body (1); an air duct (9) is provided inside the tank body (1); the input end of the air duct (9) is connected to the output end of the fan (8), and the first air outlet of the air duct (9) is located on the corresponding inclined surface of the inclined plate (6); the controller is used to control the automatic operation of the preparation equipment of the modified asphalt; A second motor (10) is symmetrically fixedly connected to the outer wall of the tank body (1); an output shaft of the second motor (10) passes through the tank body (1) and is fixedly connected to the outer wall of the corresponding inclined plate (6); A baffle (11) is fixedly connected to the inner wall of the tank body (1) and located above the corresponding first air outlet; the baffle (11) has a triangular cross-section; Two adjacent inclined plates (6) are arranged opposite to each other; The gap between the lower inclined plate (6) and the inner wall of the tank body (1) is smaller than the gap between the upper inclined plate (6) and the inner wall of the tank body (1); A third air outlet is provided below the inclined plate (6) and on the inner wall of the tank body (1); the third air outlet is communicated with the air duct (9), and the air outlet of the third air outlet faces the direction of the discharge port; The circular ring is slidably connected to the rotating shaft (3), so that the bottom end surface of the circular ring is always in contact with the inclined plate (6), so that the crushing knife (4) is always located one to two centimeters above the highest inclination of the inclined plate (6); When the first motor (2) is started, the controller controls the fan (8) to start at the same time, and the wind force of the fan (8) is poured into the first air outlet from the output end, and the rubber particles with different weights on the inclined plate (6) are blown to the gap between the inclined plate (6) and the inner wall of the tank body (1), so that the rubber particles with relatively small weights are blown out by the wind force in the first air outlet, and fall from the gap between the upper inclined plate (6) and the inner wall of the tank body (1), and then fall onto the lower inclined plate (6), and The rubber particles are continuously broken by the breaking knife (4) at the bottom, while the rubber particles with relatively large weight continue to remain on the upper inclined plate (6) and are further broken by the breaking knife (4); similarly, the wind force from another first air outlet causes the rubber particles with relatively small weight to fall from the gap between the lower inclined plate (6) and the inner wall of the tank body (1) and fall to the bottom of the tank body (1), and are then cleaned out from the outlet of the tank body (1) by the on-site staff; The controller controls the start of the second motor (10), driving the inclined plate (6) to change its inclination angle, so that the gap between the inclined plate (6) and the tank body (1) changes. When the inclination angle of the inclined plate (6) changes, the inclined plate (6) moves up or down against the ring, and drives the crushing knife (4) to move up or down, thereby limiting the falling of rubber particles of other sizes.

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