Production equipment for rubber-plastic composite modified asphalt

Abstract

The present invention relates to the technical field of asphalt production, and discloses a production device for rubber-plastic composite modified asphalt, comprising a base, a crushing barrel and a liquid nitrogen tank being fixedly connected to the base, a material guide valve disc being fixedly connected to the top of the inner cavity of the crushing barrel, a hopper docked with the material guide valve disc being fixedly connected to the upper end of the crushing barrel, a collecting chamber being provided at the bottom of the inner cavity of the crushing barrel, an inner crushing disc and an outer crushing disc being provided at the top of the collecting chamber, a suction pipe being fixedly connected to the front side of the collecting chamber, and a plurality of air guide holes being provided on the outer wall of the crushing barrel. The present invention allows the raw materials to be crushed and dropped step by step by the rotary cutting action of the crushing blades, and finally finely ground and crushed by the inner and outer crushing discs, thereby reducing the crushing pressure of a single crushing mechanism, achieving good crushing effect and high output efficiency, and sealing the material guide valve disc when cooling with low-temperature pressurized nitrogen, thereby preventing nitrogen from escaping, causing the processing air to deteriorate and affecting the physical and mental health of the processing personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt production, and in particular to production equipment for rubber-plastic composite modified asphalt. Background Art

[0002] Modified asphalt is an asphalt binder made by adding external additives such as rubber, resin, high molecular polymer, ground rubber powder or other fillers, or taking measures such as mild oxidation of asphalt to improve the performance of asphalt or asphalt mixture. In the production process of modified asphalt, crushing equipment is required to crush the rubber raw materials to the corresponding specifications before use to ensure the quality of the modified asphalt.

[0003] Patent publication number CN118268085B discloses a rubber powder production device for composite modified asphalt, relating to the technical field of rubber powder production. The invention comprises a pulverizer housing, wherein a pulverizing chamber and a powder discharge chamber are provided within the pulverizer housing. The powder discharge chamber is annularly arranged outside the pulverizing chamber, and the pulverizing chamber and the powder discharge chamber are connected via a powder screening hole. A hopper is fixedly mounted on the top of the pulverizing chamber, and a discharge port is provided on the outside of the powder discharge chamber. A pulverizing disk is rotatably mounted within the pulverizing chamber, and multiple sets of pulverizing rollers are rotatably mounted on the inner wall of the pulverizing chamber, with the multiple sets of pulverizing rollers arranged in a ring. The invention utilizes a fan for ventilation. After the airflow passes through a liquid nitrogen tank, the vaporized low-temperature nitrogen is brought into the pulverizing disk, cooling the pulverizing mechanism of the pulverizing disk. Utilizing low-temperature nitrogen not only reduces the pulverizing temperature and improves pulverizing efficiency, but also reduces oxidation of the rubber shear surface, thereby improving the quality of the rubber powder.

[0004] In the process of crushing the asphalt raw materials, the rubber powder production equipment for modified asphalt in the above patent only utilizes the relative rotation of the crushing disc and the crushing roller to crush the raw materials. The crushing pressure is large and the crushing effect is poor, and the raw materials are difficult to be crushed and output quickly. Although when the crushing pressure is large and the temperature is high, the feedback control regulating block can be used to reduce the input flow of the raw materials, but since the input channel cannot be closed immediately, the raw materials are still continuously input, and the relief of the raw material crushing pressure is small, which causes the raw materials to easily accumulate in the crushing chamber, affecting subsequent crushing operations; when low-temperature nitrogen is used for blowing and cooling, due to the continuous output of nitrogen, nitrogen is easy to escape outward through the hopper when there is not much raw material in the hopper, resulting in poor processing air quality and affecting the physical and mental health of the processing personnel; since the raw materials are crushed in the crushing chamber by horizontal conveying, once accumulated, the powder screening holes at the edge are easily blocked by some uncrushed raw materials, and it is difficult for nitrogen to pass through the large span of the raw material pile to blow and clean the screening holes, which affects the output of the raw materials after crushing. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems of low crushing effect, low output efficiency, poor processing air quality when cooling the nitrogen crushing mechanism, and poor output caused by the horizontal conveying crushing method during use of general modified asphalt production equipment. The present invention provides a rubber-plastic composite modified asphalt production equipment.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A production device for rubber-plastic composite modified asphalt, comprising a base, to which a pulverizing barrel and a liquid nitrogen tank are fixedly connected, a material guide valve disc fixedly connected to the top of the inner cavity of the pulverizing barrel, a hopper fixedly connected to the upper end of the pulverizing barrel and docked with the material guide valve disc, a collecting chamber provided at the bottom of the inner cavity of the pulverizing barrel, an inner pulverizing disc and an outer pulverizing disc provided at the top of the collecting chamber, a suction pipe fixedly connected to the front side of the collecting chamber, a plurality of air guide holes provided on the outer wall of the pulverizing barrel, a conical rotating sleeve capable of moving up and down being slidably sleeved on the bottom of the material guide valve disc, the inner pulverizing disc fixedly connected to the bottom of the conical rotating sleeve, and a plurality of rows of pulverizing blades in a circular array being spherically hinged on the outer wall of the conical rotating sleeve;

[0008] A suction pump is installed on the top of the liquid nitrogen tank, and an energy storage cylinder is fixedly connected to the left wall of the liquid nitrogen tank. The suction pump is used to pump nitrogen in the liquid nitrogen tank into the energy storage cylinder, and the energy storage cylinder is used to press nitrogen into each of the air guide holes.

[0009] Furthermore, both the front and rear sides of the material guide valve disc are provided with material guide valve grooves, and the middle portion of the material guide valve disc shrinks upwards into a cone shape.

[0010] Furthermore, the outer pulverizing disk is fixedly connected to the inner wall of the pulverizing barrel, and a pulverizing microchannel is provided between the outer pulverizing disk and the inner pulverizing disk.

[0011] Furthermore, a transmission tube is rotatably connected to the middle of the base, a drive shaft is rotatably connected to the base, the drive shaft is driven by a motor installed at the upper end of the base, a transmission belt is movably connected between the drive shaft and the transmission tube, and the bottom of the conical rotating sleeve is fixedly connected to an elastic tube that is slidably engaged with the inner wall of the transmission tube.

[0012] Furthermore, a guide groove is provided on the inner wall of the bottom of the pulverizing cylinder. The guide groove is annular and has protrusions on the front and rear lower walls. The elastic tube is rotatably connected to rotating columns on both sides that are movably connected to the guide groove.

[0013] Furthermore, a guide rod is rotatably connected between the material guide valve disc and the base, and the guide rod is slidably engaged with the bottom of the conical rotating sleeve. A pin is provided on the guide rod, and the lower wall of the inner cavity of the conical rotating sleeve is rotatably connected to a conduit movably sleeved on the guide rod. The inner wall of the conduit is provided with a spiral groove movably engaged with the pin, and the outer wall of the conduit is fixedly connected to a plurality of cranks corresponding to the crushing blades. A slide groove is provided on the side of the crushing blade close to the conduit, and the crank is slidably engaged with the slide groove.

[0014] Furthermore, the suction pump input end is communicated with the top of the liquid nitrogen tank inner cavity, the suction pump output end is fixedly connected to a compressed air pipe extending to the bottom of the energy storage cylinder inner cavity, the outer wall of the crushing cylinder is fixedly connected to an air collecting hood, and a guide pipe is fixedly connected between the air collecting hood and the bottom of the energy storage cylinder.

[0015] Furthermore, the air guide holes are arranged in a circular array and in multiple rows, and the air guide holes are arranged to be inclined downward toward one side of the inner cavity of the pulverizing cylinder, and the air guide holes are located on the upper side of the collecting chamber and within the coverage of the air collecting hood.

[0016] Furthermore, the inner wall of the energy storage cylinder is slidably connected to an elastic piston movably sleeved on the compressed air pipe, and the bottom of the energy storage cylinder is sealed and the top is open;

[0017] Valve tubes connected to the guide pipe are fixedly inserted on the front and rear sides of the guide groove, and an elastic valve column extending into the guide groove is slidably clamped in the valve tube. The elastic valve column is set with a rounded corner at one end facing the guide groove, and a valve hole is provided on the elastic valve column that is misaligned with the internal channel of the guide pipe.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention gradually narrows the pulverizing channel between the conical rotating sleeve and the pulverizing barrel during pulverization, thereby facilitating the control of raw materials of different particle sizes to be gradually pulverized and dropped by the rotary cutting action of the pulverizing blades. After the raw materials are pulverized by rotary cutting, they are finally finely ground and pulverized by the inner and outer pulverizing discs, thereby reducing the pulverizing pressure of a single pulverizing mechanism, achieving good pulverizing effect and high output efficiency. In addition, during pulverization, the conical rotating sleeve drives the inner pulverizing disc and each pulverizing blade to move up and down, and the pulverizing blades automatically swing horizontally, thereby further improving the pulverizing effect and output efficiency.

[0020] 2. The present invention suspends the input of raw materials by sealing the guide valve disc by moving the conical rotating sleeve upward, thereby reducing the crushing pressure caused by the continuous input of raw materials and improving the crushing effect. In conjunction with the sealing, the air guide holes are used to introduce low-temperature pressurized nitrogen into the raw materials in the crushing area, which not only achieves the cooling of the crushing mechanism, but also prevents the nitrogen from escaping outward in large quantities through the guide valve disc and the hopper, resulting in the deterioration of the processing air and affecting the physical and mental health of the processing personnel. At the same time, it is also convenient to loosen and disperse the raw materials, improve the crushing effect, and dredge the inner and outer crushing discs to accelerate the discharge of the crushed materials.

[0021] 3. The present invention crushes the raw materials gradually downward along a vertical path during crushing. Compared with horizontal conveying crushing, the raw material flow output effect is better, and it is convenient for nitrogen to sink to dredge the raw materials, thereby enhancing the utilization effect of nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural diagram of the production equipment of the present invention;

[0023] Figure 2 This is a partial three-dimensional cutaway view of the base and crushing barrel of the production equipment of the present invention;

[0024] Figure 3 It is a partial three-dimensional cutaway view of the energy storage cylinder and gas collecting cover of the production equipment of the present invention;

[0025] Figure 4 This is an exploded view of the guide rod and conduit portion of the production equipment of the present invention;

[0026] Figure 5 It is a partial three-dimensional cutaway view of the grinding cylinder and the conical rotating sleeve of the production equipment of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the crushing blade and crank portion of the production equipment of the present invention;

[0028] Figure 7 It is a three-dimensional cross-sectional view of the grinding cylinder and valve pipe part of the production equipment of the present invention.

[0029] Figure numerals: 1. base; 11. transmission pipe; 12. drive shaft; 13. transmission belt; 2. crushing cylinder; 21. material guide valve disc; 22. material guide valve groove; 23. guide rod; 24. pin convex; 25. inner crushing disc; 26. outer crushing disc; 27. suction pipe; 28. air guide hole; 29. ​​guide groove; 3. hopper; 4. conical rotating sleeve; 41. crushing blade; 42. slide groove; 43. guide tube; 44. spiral groove; 45. crank; 46. elastic tube; 47. rotating column; 5. liquid nitrogen tank; 51. suction pump; 52. energy storage cylinder; 53. compressed air pipe; 54. elastic piston; 55. gas collecting hood; 56. guide pipe; 57. valve pipe; 58. elastic valve column; 59. valve hole. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] Example 1, as Figure 1-Figure 7 As shown, a production equipment for rubber-plastic composite modified asphalt includes a base 1, to which a pulverizing cylinder 2 and a liquid nitrogen tank 5 are fixedly connected, a material guide valve disc 21 is fixedly connected to the top of the inner cavity of the pulverizing cylinder 2, and a hopper 3 connected to the material guide valve disc 21 is fixedly connected to the upper end of the pulverizing cylinder 2. The bottom of the inner cavity of the pulverizing cylinder 2 has a collecting chamber, and the top of the collecting chamber is provided with an inner pulverizing disc 25 and an outer pulverizing disc 26. A suction pipe 27 is fixedly connected to the front side of the collecting chamber. A plurality of air guide holes 28 are opened on the outer wall of the pulverizing cylinder 2, and a conical rotating sleeve 4 that can move up and down is slidably sleeved on the bottom of the material guide valve disc 21. The inner pulverizing disc 25 is fixedly connected to the bottom of the conical rotating sleeve 4, and the outer wall of the conical rotating sleeve 4 is spherically hinged with a circumferential array of multiple rows of pulverizing blades 41;

[0032] A suction pump 51 is installed on the top of the liquid nitrogen tank 5, and an energy storage cylinder 52 is fixedly connected to the left wall of the liquid nitrogen tank 5. The suction pump 51 is used to pump nitrogen in the liquid nitrogen tank 5 into the energy storage cylinder 52, and the energy storage cylinder 52 is used to pressurize nitrogen into each air guide hole 28.

[0033] The material guide valve disc 21 has a material guide valve groove 22 on both the front and rear sides. The middle part of the material guide valve disc 21 shrinks upwards into a cone shape.

[0034] During the crushing process, the suction pipe 27 is externally connected to the suction and nitrogen recovery processing mechanism of the crushed material, and the raw materials are added to the hopper 3. Under the action of gravity, the raw materials automatically fall from the guide valve groove 22 on the guide valve disc 21 to the crushing channel between the conical rotating sleeve 4 and the crushing cylinder 2. Since the crushing channel gradually shrinks from top to bottom, the areas where raw materials of different specifications are blocked and trapped are different after falling. The suction pump 51 is automatically operated to automatically extract the gaseous nitrogen in the liquid nitrogen tank 5 and input it into the energy storage cylinder 52 for storage. The rotation of the conical rotating sleeve 4 is controlled, and the conical rotating sleeve 4 drives the inner crushing disc 25 and each crushing blade 41 to rotate synchronously. Each crushing blade 41 automatically performs graded rotary cutting on raw materials of different heights, and different After being peeled, the raw materials at a certain height automatically fall to the next height to be peeled again, thereby achieving step-by-step crushing. The raw materials crushed by the crushing blades 41 at different heights finally fall between the inner crushing disk 25 and the outer crushing disk 26 for fine grinding and crushing. During this period, the conical rotating sleeve 4 continuously moves up and down when rotating, and the crushing blades 41 automatically swing horizontally, thereby increasing the peeling range and peeling effect of the crushing blades 41. In addition, it is convenient for the inner crushing disk 25 to "bite" the fallen raw materials in the form of up and down squeezing between the inner crushing disk 25 and the outer crushing disk 26 for sufficient grinding and crushing, and it is convenient for the ground and crushed raw materials between the bottom of the inner crushing disk 25 and the outer crushing disk 26 to be output, with good crushing effect and high output efficiency.

[0035] During this period, when the conical rotating sleeve 4 moves upward to seal the guide valve groove 22 on the guide valve disc 21 to suspend the input of raw materials, the crushing pressure caused by the continuous input of raw materials is automatically reduced, thereby improving the crushing effect. The synchronous energy storage cylinder 52 automatically passes low-temperature pressurized nitrogen into the crushing cylinder 2 through each air guide hole 28. After the low-temperature pressurized nitrogen enters the crushing area, it not only achieves the cooling of the raw materials and the crushing mechanism, reduces the oxidation of the shear surface of the rubber raw materials, but also facilitates the stirring action of each crushing blade 41 to loosen and disperse the raw materials, thereby improving the crushing effect. And accelerate the discharge of the crushed material, and at the same time seal and fill with pressurized nitrogen, to avoid the nitrogen from escaping outward in large quantities through the material guide valve disc 21 and the hopper 3, resulting in the deterioration of the processing air and affecting the physical and mental health of the processing personnel. During crushing, the raw materials are gradually crushed downward along the vertical path, compared with the horizontal conveying crushing, the raw material flow output effect is better, and it is convenient for the nitrogen to sink and discharge the raw materials, thereby enhancing the utilization effect of nitrogen. The subsequent crushed raw materials automatically fall into the collection chamber and are sucked by the external crushed material and the nitrogen recovery and processing mechanism through the suction pipe 27.

[0036] Embodiment 2: Based on the above embodiment, the outer pulverizing disc 26 is fixedly connected to the inner wall of the pulverizing cylinder 2 , and a pulverizing microchannel is provided between the outer pulverizing disc 26 and the inner pulverizing disc 25 .

[0037] After the raw materials are graded, peeled and crushed by the crushing blades 41 and fall into the crushing microchannel, the inner crushing disk 25 can fully grind and crush the raw materials under the drive of the conical rotating sleeve 4 by utilizing the tiny passage effect of the crushing microchannel, thereby ensuring the crushing quality of the raw materials.

[0038] Embodiment 3, based on the above embodiment, provides a driving mechanism of a conical rotating sleeve 4:

[0039] A transmission tube 11 is rotatably connected to the middle of the base 1, and a drive shaft 12 is rotatably connected to the base 1. The drive shaft 12 is driven by a motor installed at the upper end of the base 1. A transmission belt 13 is movably connected between the drive shaft 12 and the transmission tube 11. The bottom of the conical rotating sleeve 4 is fixedly connected to an elastic tube 46 that is slidably engaged with the inner wall of the transmission tube 11.

[0040] A guide groove 29 is provided on the inner wall of the bottom of the grinding cylinder 2 . The guide groove 29 is annular and has protrusions on the front and rear lower walls. The elastic tube 46 is rotatably connected to a rotating column 47 on both sides that is movably connected to the guide groove 29 .

[0041] During the crushing process, the motor drives the drive shaft 12 to rotate, and the drive shaft 12 drives the transmission belt 13 to rotate the transmission tube 11, and the transmission tube 11 thereby drives the conical rotating sleeve 4 to rotate through the elastic tube 46. When the elastic tube 46 rotates, it drives the rotating column 47 to rotate along the annular guide groove 29. When the rotating column 47 is driven by the protrusion in the guide groove 29 to move upward, due to the sliding engagement of the elastic tube 46 with the inner wall of the transmission tube 11, the elastic tube 46 drives the conical rotating sleeve 4 to move upward and ensure stable rotation transmission. When the rotating column 47 passes the protrusion, the elastic tube 46 drives the conical rotating sleeve 4 to move downward and reset under the action of its own elastic force. As the transmission tube 11 drives the elastic tube 46 to rotate continuously, the conical rotating sleeve 4 thereby moves back and forth when rotating, driving the inner crushing disk 25 and each crushing blade 41 to enhance the crushing effect of the raw material.

[0042] Embodiment 4, based on the above embodiment, provides an adjustment mechanism for the crushing blade 41:

[0043] A guide rod 23 is rotatably connected between the guide valve disc 21 and the base 1, and the guide rod 23 is slidably engaged with the bottom of the conical rotating sleeve 4. A pin protrusion 24 is provided on the guide rod 23. The lower wall of the inner cavity of the conical rotating sleeve 4 is rotatably connected to a conduit 43 that is movably sleeved on the guide rod 23. The inner wall of the conduit 43 is provided with a spiral groove 44 that is movably engaged with the pin protrusion 24. The outer wall of the conduit 43 is fixedly connected to a number of cranks 45 corresponding to the crushing blades 41. A slide groove 42 is provided on the side of the crushing blade 41 close to the conduit 43, and the crank 45 is slidably engaged with the slide groove 42.

[0044] During the crushing process, as the conical rotating sleeve 4 continuously rotates and reciprocates up and down, since the guide rod 23 is slidably engaged with the bottom of the conical rotating sleeve 4, the guide rod 23 drives the pin convex 24 to never deflect relative to the conical rotating sleeve 4, and when the conical rotating sleeve 4 moves up, the conical rotating sleeve 4 drives the guide tube 43 to make the spiral groove 44 move up relative to the pin convex 24. Therefore, under the drive of the pin convex 24, the spiral groove 44 is passively deflected, and the guide tube 43 is driven to deflect. The guide tube 43 thereby drives each crank 45 to toggle the slide 42 on the corresponding crushing blade 41, so that the crushing blade 41 is deflected. When the conical rotating sleeve 4 moves down and resets, the crushing blade 41 is automatically driven to reset. Therefore, when the conical rotating sleeve 4 rotates and reciprocates up and down, each crushing blade 41 swings back and forth to cut, thereby increasing the crushing effect of the raw material.

[0045] Since the crushing blades 41 are arranged in multiple rows on the outer wall of the conical rotating sleeve 4, and the outer wall of the conical rotating sleeve 4 is inclined, the engagement points between the cranks 45 of different heights and the slide grooves 42 on the corresponding crushing blades 41 gradually move away from the rotation axis of the crushing blades 41 from top to bottom. Therefore, the swing cutting amplitude of the outer end of the crushing blades 41 gradually decreases from top to bottom to just meet the crushing requirements of raw materials of different heights.

[0046] Example 5, based on the above example, provides a nitrogen delivery mechanism:

[0047] The input end of the suction pump 51 is connected to the top of the inner cavity of the liquid nitrogen tank 5, and the output end of the suction pump 51 is fixedly connected to the compressed air pipe 53 extending to the bottom of the inner cavity of the energy storage cylinder 52. The outer wall of the crushing cylinder 2 is fixedly connected to the gas collecting hood 55, and a guide pipe 56 is fixedly connected between the gas collecting hood 55 and the bottom of the energy storage cylinder 52.

[0048] The air guide holes 28 are arranged in a circumferential array and in multiple rows. The air guide holes 28 are arranged downwardly and tilted toward one side of the inner cavity of the pulverizing cylinder 2 , and are located on the upper side of the collecting chamber and within the coverage of the air collecting hood 55 .

[0049] During the crushing process, the suction pump 51 runs synchronously to extract the gaseous low-temperature nitrogen in the top of the inner cavity of the liquid nitrogen tank 5 and input it into the energy storage cylinder 52. The nitrogen in the corresponding energy storage cylinder 52 is released into the gas collecting hood 55 through the guide pipe 56, and is evenly distributed to the raw materials in different crushing areas through each air guide hole 28, thereby quickly cooling the raw materials and the crushing mechanism. The downward inclined design of the air guide hole 28 facilitates the nitrogen to be pressed into the raw material in a downward direction, thereby increasing the downward movement speed of the raw material after crushing and accelerating the discharge.

[0050] Example 6, based on the above example, provides a nitrogen release control mechanism:

[0051] The inner wall of the energy storage cylinder 52 is slidably connected to an elastic piston 54 that is movably sleeved on the compressed air pipe 53. The bottom of the energy storage cylinder 52 is sealed and the top is open.

[0052] Valve tubes 57 connected to the guide tube 56 are fixedly inserted on the front and rear sides of the guide groove 29. An elastic valve column 58 extending into the guide groove 29 is slidably clamped in the valve tube 57. The elastic valve column 58 is set with a rounded corner at one end facing the guide groove 29. A valve hole 59 is provided on the elastic valve column 58, which is misaligned with the internal channel of the guide tube 56.

[0053] When the conical rotating sleeve 4 moves upward to seal the material guide valve disc 21, the rotating column 47 rotates accordingly to the protrusion in the guide groove 29. When the rotating column 47 squeezes the elastic valve column 58 to contract, the elastic valve column 58 drives the valve hole 59 to connect with the guide pipe 56, thereby releasing the low-temperature pressurized nitrogen stored in the accumulator cylinder 52. Due to the sealing of the material guide valve disc 21, the corresponding nitrogen will not be released outward through the material guide valve disc 21 and the hopper 3, but will be sucked and recovered by the crushed material suction and nitrogen recovery processing mechanism connected to the suction pipe 27, thereby preventing nitrogen from escaping and reducing the oxygen content in the air, which would affect the physical and mental health of the processing personnel.

[0054] When the rotating column 47 rotates past the elastic valve column 58, the elastic valve column 58 automatically resets under the action of its own elastic force to block the guide tube 56 again, and when the rotating column 47 rotates past the protrusion, the conical rotating sleeve 4 moves downward and the material guide valve disc 21 opens. During the opening period of the material guide valve disc 21, as the suction pump 51 continues to operate, low-temperature nitrogen continuously accumulates in the accumulator cylinder 52 and squeezes the elastic piston 54 upward, thereby automatically pressurizing, ensuring the subsequent stable pressing effect of the raw material. Later, when the conical rotating sleeve 4 moves upward again to seal the material guide valve disc 21, the low-temperature pressurized nitrogen is automatically released again.

[0055] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A production device for rubber-plastic composite modified asphalt, comprising a base (1), characterized in that: The base (1) is fixedly connected to a pulverizing cylinder (2) and a liquid nitrogen tank (5); the top of the inner cavity of the pulverizing cylinder (2) is fixedly connected to a material guide valve disc (21); the upper end of the pulverizing cylinder (2) is fixedly connected to a hopper (3) docked with the material guide valve disc (21); the bottom of the inner cavity of the pulverizing cylinder (2) is provided with a collecting chamber; the top of the collecting chamber is provided with an inner pulverizing disc (25) and an outer pulverizing disc (26); a suction pipe (27) is fixedly connected to the front side of the collecting chamber; and a hopper (34) is provided on the outer wall of the pulverizing cylinder (2). There are a plurality of air guide holes (28), the bottom of the material guide valve disc (21) is slidably sleeved with a conical rotating sleeve (4) that can move up and down, the inner crushing disc (25) is fixedly connected to the bottom of the conical rotating sleeve (4), the outer wall of the conical rotating sleeve (4) is spherically hinged with a plurality of rows of crushing blades (41) in a circumferential array, the middle of the base (1) is rotatably connected to a transmission tube (11), and the bottom of the conical rotating sleeve (4) is fixedly connected to an elastic tube (46) that is slidably engaged with the inner wall of the transmission tube (11); A suction pump (51) is installed on the top of the liquid nitrogen tank (5), and an energy storage cylinder (52) is fixedly connected to the left wall of the liquid nitrogen tank (5). The suction pump (51) is used to pump nitrogen in the liquid nitrogen tank (5) into the energy storage cylinder (52), and the energy storage cylinder (52) is used to pressurize nitrogen into each of the air guide holes (28); A guide groove (29) is provided on the inner wall of the bottom of the pulverizing cylinder (2). The guide groove (29) is annular and has protrusions on the front and rear lower walls. The elastic tube (46) is rotatably connected to a rotating column (47) on both the left and right sides thereof, which is movably connected to the guide groove (29). An air collecting cover (55) is fixedly connected to the outer wall of the pulverizing cylinder (2), a guide tube (56) is fixedly connected between the air collecting cover (55) and the bottom of the energy storage cylinder (52), valve tubes (57) in communication with the guide tube (56) are fixedly plugged into the front and rear sides of the guide groove (29), an elastic valve column (58) extending into the guide groove (29) is slidably engaged in the valve tube (57), the elastic valve column (58) is arranged with a rounded corner at one end facing the guide groove (29), and a valve hole (59) is provided on the elastic valve column (58) that is misaligned with the internal channel of the guide tube (56); When the elastic tube (46) rotates, it drives the rotating column (47) to rotate along the annular guide groove (29). When the rotating column (47) is driven by the protrusion in the guide groove (29) to move upward, the elastic tube (46) drives the conical rotating sleeve (4) to move upward. When the conical rotating sleeve (4) moves upward to seal the guide valve disc (21), the rotating column (47) squeezes the elastic valve column (58) to shrink. The elastic valve column (58) drives the valve hole (59) to dock with the guide tube (56), thereby releasing the low-temperature pressurized nitrogen stored in the accumulator (52). Since the guide valve disc (21) is sealed, the corresponding nitrogen will not be released outward through the guide valve disc (21) and the hopper (3).

2. The production equipment of a rubber-plastic composite modified asphalt according to claim 1, characterized in that: The material guide valve disc (21) has a material guide valve groove (22) on both the front and rear sides, and the middle portion of the material guide valve disc (21) shrinks upwards into a cone shape.

3. The production equipment of a rubber-plastic composite modified asphalt according to claim 2, characterized in that: The outer pulverizing disk (26) is fixedly connected to the inner wall of the pulverizing cylinder (2), and a pulverizing microchannel is provided between the outer pulverizing disk (26) and the inner pulverizing disk (25).

4. The production equipment of rubber-plastic composite modified asphalt according to claim 3, characterized in that: A drive shaft (12) is rotatably connected to the base (1), and the drive shaft (12) is driven by a motor installed at the upper end of the base (1). A transmission belt (13) is movably sleeved between the drive shaft (12) and the transmission tube (11).

5. The production equipment of rubber-plastic composite modified asphalt according to claim 4, characterized in that: A guide rod (23) is rotatably connected between the guide valve disc (21) and the base (1), and the guide rod (23) is slidably engaged with the bottom of the conical rotating sleeve (4). A pin protrusion (24) is provided on the guide rod (23). The lower wall of the inner cavity of the conical rotating sleeve (4) is rotatably connected to a conduit (43) movably sleeved on the guide rod (23). The inner wall of the conduit (43) is provided with a spiral groove (44) movably engaged with the pin protrusion (24). The outer wall of the conduit (43) is fixedly connected with a plurality of cranks (45) corresponding to the crushing blades (41). A sliding groove (42) is provided on the side of the crushing blade (41) close to the conduit (43), and the crank (45) is slidably engaged with the sliding groove (42).

6. The production equipment of rubber-plastic composite modified asphalt according to claim 5, characterized in that: The input end of the suction pump (51) is in communication with the top of the inner cavity of the liquid nitrogen tank (5), and the output end of the suction pump (51) is fixedly connected to a compressed air pipe (53) extending to the bottom of the inner cavity of the energy storage cylinder (52).

7. The production equipment of rubber-plastic composite modified asphalt according to claim 6, characterized in that: The air guide holes (28) are arranged in a circular array and in multiple rows. The air guide holes (28) are arranged downwardly and tilted toward one side of the inner cavity of the pulverizing cylinder (2). The air guide holes (28) are located on the upper side of the collecting chamber and within the coverage of the air collecting hood (55).

8. The production equipment of rubber-plastic composite modified asphalt according to claim 7, characterized in that: The inner wall of the energy storage cylinder (52) is slidably connected to an elastic piston (54) that is movably sleeved on the compressed air pipe (53). The bottom of the energy storage cylinder (52) is sealed and the top is open.

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