Production method and production equipment of a deodorized environment-friendly asphalt mixture

Abstract

The application discloses a kind of production method and production equipment of odorless environment-friendly asphalt mixture, including the stirring drum of spherical structure and the support assembly located at its outside, support assembly is two sets of annular frame, two sets of annular frame are connected with cross stagger around stirring drum, and annular frame camber is adapted with the outer contour of stirring drum;Annular frame upper half is opened with through bar mouth, and the top of two through bar mouths is communicated with each other;Stirring drum top middle part is equipped with base, and the connecting seat of base top end extends to the outside of annular frame through through bar mouth, and the top of connecting seat is equipped with limit block;Annular frame left and right sides are movably embedded with push mechanism, and push mechanism pushes connecting seat to move along through bar mouth, to drive stirring drum to rotate in turn;The present application is precisely inclined by multi-angle spherical stirring drum, and the adaptive angle switching of stirring piece is matched, realizes that asphalt mixture is uniformly stirred without dead angle, simultaneously, combined with the structural design of negative pressure odorless, uniform feeding, with environmental protection and use stability.

Description

Technical Field

[0001] This invention relates to the field of asphalt technology, specifically to a method and equipment for producing odorless and environmentally friendly asphalt mixtures. Background Technology

[0002] In the field of asphalt mixture production, existing asphalt mixture production equipment generally suffers from the following technical deficiencies, which restrict the improvement of production efficiency, product quality, and environmental performance:

[0003] 1. Poor mixing uniformity, easy to create dead corners and material adhesion: Traditional mixing equipment mostly adopts a single mixing paddle structure, which has a limited coverage area and is difficult to reach areas such as the inner wall of the mixing drum, which easily forms mixing dead corners, resulting in insufficient mixing in some areas; at the same time, the mixture is easy to adhere to the inner wall of the mixing drum, which not only affects the mixing quality, but also increases the difficulty of subsequent cleaning.

[0004] 2. Poor feed dispersion affects subsequent mixing effect: Traditional feeding structures mostly involve direct feeding, which makes it easy for raw materials to accumulate at a single point in the mixing drum. This results in subsequent mixing requiring more time and energy to achieve the required uniformity, thus reducing production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a method and equipment for producing odorless and environmentally friendly asphalt mixtures, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-odor, environmentally friendly asphalt mixture production device, comprising a spherical mixing drum and a support assembly located on its outer side. The support assembly consists of two sets of annular frames, which are connected in a cross pattern around the mixing drum, and the curvature of the annular frames is adapted to the outer contour of the mixing drum. A through-hole is opened in the upper half of the annular frame, and the tops of the two through-holes are interconnected. A base is provided at the center of the top of the mixing drum, and a connecting seat at the top of the base extends through the through-hole to the outside of the annular frame. A limiting block is provided at the top of the connecting seat. A pushing mechanism is movably embedded on the left and right sides of the annular frame, and the pushing mechanism pushes the connecting seat to move along the through-hole, thereby driving the mixing drum to rotate.

[0007] The mixing drum is equipped with a feed valve at the top and a discharge valve at the bottom. The bottom connection of the two sets of annular frames has a discharge port corresponding to the discharge valve. The base is equipped with a first motor, and the top of the mixing shaft inside the mixing drum is coaxially connected to the output shaft of the first motor. Several sets of mixing blades are spaced apart along the axial direction on the mixing shaft. Arc-shaped frames are connected to both sides of the mixing shaft. The upper and lower ends of the arc-shaped frames are connected to the upper and lower ends of the mixing shaft, and the arc-shaped frames are adapted to the inner contour of the mixing drum. Several mixing blades are provided inside the arc-shaped frames. A drive assembly is embedded inside the arc-shaped frames. The drive assembly drives all the mixing blades to rotate synchronously along their own axial direction.

[0008] Furthermore, the lower half of the annular frame has a receiving cavity that communicates with the tube opening. Arc-shaped racks are provided on both the left and right sides of the annular frame. The pushing mechanism includes a movable seat, a push plate, and an arc-shaped rod. The arc of the arc-shaped rod is adapted to the contour of the annular frame. The arc-shaped rod is connected between the push plate and the movable seat. The movable seat is slidably assembled inside the annular frame, and a second motor is mounted on the movable seat. A gear is provided on the output shaft of the second motor. The gear meshes with the arc-shaped rack to drive the movable seat to slide along the annular frame, and pushes the push plate to push the connecting seat to move along the tube opening through the arc-shaped rod.

[0009] Furthermore, the upper and lower ends of the stirring shaft are respectively connected to an upper support and a lower support, and the two ends of the arc-shaped frame are respectively connected to the upper support and the lower support. The driving assembly includes a third motor and a fourth motor respectively embedded in the upper support and the lower support. One end of the stirring blade is connected to a connecting shaft, which is rotatably mounted on the inner end of the arc-shaped frame, and the other end of the connecting shaft extends through into the interior of the arc-shaped frame. A key block is provided at its end, and connecting blocks are provided on both sides of the key block. The connecting blocks on the same side of the stirring blade are connected in series on the right side by a first steel wire rope, and the connecting blocks on the left side are connected in series by a second steel wire rope. A first torsion block is provided on the output shaft of the third motor, and the two ends of the first torsion block are respectively connected to the first steel wire rope by a first connecting rope. A second torsion block is provided on the output shaft of the fourth motor, and the two ends of the second torsion block are respectively connected to the second steel wire rope by a second connecting rope.

[0010] Furthermore, the arc-shaped frame is provided with several guide wheels to guide the first wire rope and the second wire rope.

[0011] Furthermore, the impeller includes a radial rod fixedly connected to the shaft and an arc-shaped blade fixed to the end of the radial rod, the arc-shaped blade having a V-shaped cross-section.

[0012] Furthermore, a guide plate is provided on the upper part of the stirring shaft. The guide plate is located below the feed valve and rotates coaxially with the stirring shaft. Several annular discharge slots are opened on the bottom surface of the guide plate. Several pusher plates are evenly distributed on the guide plate, which divide the space above the guide plate into multiple independent areas.

[0013] Furthermore, the inner end of the annular frame is provided with several omnidirectional ball supports, which abut against the surface of the mixing drum; the lower part of the annular frame is connected with several legs.

[0014] Furthermore, the base is provided with a negative pressure adsorption chamber, which is connected to the stirring drum through a pipe. The negative pressure adsorption chamber is connected to an external air pump through a hose to extract harmful gases volatilized during the stirring process.

[0015] This invention also provides a method for producing odor-free and environmentally friendly asphalt mixtures, using the aforementioned production equipment, and comprising the following steps:

[0016] S1. Prepare dried raw materials such as asphalt and aggregates according to the proportion; adjust the angle of the mixing drum to the feeding position, connect the external feeding pipe to the feeding valve, open the feeding valve to feed the material at a uniform speed, close the feeding valve after completion, and remove the feeding pipe.

[0017] S2. Start the first motor to drive the stirring shaft, and periodically adjust the tilt angle of the stirring drum to prevent dead angles;

[0018] S3. Adjust the mixing drum so that the discharge valve is aligned with the discharge port; after discharge, use high-temperature steam to clean the residue inside the drum and complete the equipment cleaning.

[0019] Furthermore, in step S2, when the tilt angle of the stirring drum changes, the third motor or the fourth motor is started simultaneously to drive the first torsion block and the second torsion block on the output shaft to rotate, thereby pulling the steel wire rope and driving the key block of the stirring blade to move in linkage, so that the stirring blade switches between the horizontal and vertical states; the switching process is adaptively adjusted with the tilt angle of the stirring drum, so that the stirring blade switches to a state that is suitable for the current tilt angle and stirs in coordination with the stirring shaft.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention offers significant advantages in improving mixing uniformity, eliminating dead zones, and preventing material adhesion. It employs a double-layer synergistic mixing structure consisting of a stirring paddle, an arc-shaped frame, and adjustable stirring blades to achieve a triple action of shearing, pushing, and tumbling, quickly breaking up material clumps. The arc-shaped frame fully conforms to the inner wall of the mixing drum, covering the blind spots of the stirring paddle. Combined with the stirring blades, which can adaptively adjust within horizontal and vertical ranges, it can penetrate deep into the areas where the mixture accumulates, maximizing the mixing contact area and completely eliminating mixing dead zones. At the same time, the rotation of the arc-shaped frame and stirring blades can scrape off material adhering to the drum wall, preventing material residue from affecting the mixing quality.

[0022] This invention features a design with two sets of intersecting ring-shaped support structures, with omnidirectional ball supports evenly distributed on the inner side. This transforms sliding friction into rolling friction, significantly reducing rotational resistance and mechanical wear. The invention employs a phased adjustment and connecting seat reset adjustment mode, which can precisely adapt to the angle requirements of different working conditions such as feeding, stirring, and discharging. The tilt adjustment of the stirring drum can cause the mixture to tumble under gravity. Combined with the adaptive angle adjustment of the stirring blades, this can completely break the fixed accumulation state of the material and further eliminate stirring dead zones.

[0023] This invention provides a coaxially rotating guide plate below the feed valve, which pushes raw materials separately through a pusher plate. The raw materials then fall evenly into various areas of the mixing drum through an annular discharge strip, thus avoiding single-point accumulation of materials from the feed source, reducing subsequent mixing time and energy consumption, and indirectly improving production efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the production equipment of the present invention;

[0025] Figure 2 This is a cross-sectional view of the production equipment of the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0027] Figure 4 for Figure 2 Enlarged view of a section at point B in the middle;

[0028] Figure 5 This is a schematic diagram of the stirring shaft structure;

[0029] Figure 6 A cross-sectional view of the driving component;

[0030] Figure 7 for Figure 6 Enlarged view of a section at point C;

[0031] Figure 8 This is a schematic diagram of the stirrer plate structure;

[0032] Figure 9 This is a schematic diagram of the guide plate structure.

[0033] In the diagram, the components are: mixing drum-1, ring frame-2, sprue inlet-3, base-4, connecting seat-5, limit block-6, feed valve-7, discharge valve-8, discharge port-9, mixing paddle-10, arc frame-11, mixing blade-12, receiving cavity-13, arc rack-14, moving seat-15, push plate-16, arc rod-17, gear-18, upper support-19, lower support-20, third motor-21, and fourth motor-22. Machine-22, connecting shaft-23, key block-24, connecting block-25, first wire rope-26, second wire rope-27, first twist block-28, first connecting rope-29, second twist block-30, second connecting rope-31, guide wheel-32, radial rod-33, arc-shaped blade-34, guide plate-35, annular discharge bar-36, pusher plate-37, universal ball support-38, support leg-39, stirring shaft-40. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 9 As shown, a low-odor, environmentally friendly asphalt mixture production equipment includes a spherical mixing drum 1 and a support assembly located on its outer side. The support assembly consists of two sets of annular frames 2, which are connected in a cross shape around the mixing drum 1, and the curvature of the annular frames 2 is adapted to the outer contour of the mixing drum 1. The upper half of the annular frame 2 has a through-hole 3, and the tops of the two through-holes 3 are interconnected. A base 4 is provided at the middle of the top of the mixing drum 1, and a connecting seat 5 at the top of the base 4 extends through the through-hole 3 to the outside of the annular frame 2. A limiting block 6 is provided at the top of the connecting seat 5, which can prevent the connecting seat 5 from coming out of the through-hole 3 during movement. Pushing mechanisms are movably embedded on the left and right sides of the annular frame 2. The pushing mechanisms push the connecting seat 5 to move along the through-hole 3, thereby driving the mixing drum 1 to rotate.

[0036] The mixing drum 1 is equipped with a feed valve 7 at the top and a discharge valve 8 at the bottom. The bottom ends of the two sets of annular frames 2 are connected with discharge ports 9 corresponding to the discharge valves 8. The base 4 is equipped with a first motor. The top end of the mixing shaft 40 inside the mixing drum 1 is coaxially connected to the output shaft of the first motor. Several sets of mixing blades 10 are spaced along the axial direction on the mixing shaft 40. Arc-shaped frames 11 are connected to both sides of the mixing shaft 40. The upper and lower ends of the arc-shaped frames 11 are connected to the upper and lower ends of the mixing shaft 40, and the arc-shaped frames 11 are adapted to the inner contour of the mixing drum 1. Several mixing blades 12 are provided inside the arc-shaped frames 11. A drive assembly is embedded inside the arc-shaped frames 11. The drive assembly drives all the mixing blades 12 to rotate synchronously along their own axial direction.

[0037] The feed valve 7 is the feed channel of the mixing drum 1. When open, it can be precisely connected to the external feed pipe to achieve uniform feeding of raw materials. When closed, it can seal the mixing drum 1 to prevent the mixture from splashing from the feed port during the mixing process, and also prevent harmful gases from leaking out of the mixing drum 1. The discharge valve 8 is the discharge channel of the mixture. After the mixing operation is completed, the tilt angle of the mixing drum 1 needs to be adjusted by the pushing mechanism of the two sets of ring frames 2 to reset it to the initial state, so that the discharge valve 8 is aligned with the discharge port 9. After the discharge valve 8 is opened, the mixed material can be accurately discharged to the external receiving equipment through the discharge valve 8 and the discharge port 9 under its own gravity. The discharge port 9 can effectively limit the discharge direction to prevent the mixture from scattering outside the equipment during discharge.

[0038] The outer arc of the arc frame 11 is adapted to the inner contour of the mixing drum 1, and can completely fit the inner wall of the mixing drum 1. The arc frame 11 rotates synchronously with the rotation of the mixing shaft 40. Its coverage area is the inner wall area of ​​the mixing drum 1 that is difficult for the mixing paddle 10 to reach. It can effectively fill the blind spot of mixing, avoid the accumulation of the mixture on the drum wall, and also avoid the material from adhering to the drum wall.

[0039] Several universal ball supports 38 are distributed on the inner end of the ring frame 2, and the universal ball supports 38 abut against the surface of the mixing drum 1; several legs 39 are connected to the lower part of the ring frame 2; the universal ball supports 38 on the inner side of the ring frame 2 abut against the surface of the mixing drum 1, converting sliding friction into rolling friction and reducing the resistance when the mixing drum 1 rotates; the legs 39 provide stable ground support for the entire support assembly and equipment, preventing the equipment from shifting or tipping over during operation.

[0040] In this embodiment, the lower half of the ring frame 2 is provided with a receiving cavity 13 that communicates with the tube opening 3. Arc-shaped racks 14 are provided on both the left and right sides of the ring frame 2. The pushing mechanism includes a movable seat 15, a push plate 16 and an arc-shaped rod 17. The arc of the arc-shaped rod 17 is adapted to the contour of the ring frame 2. The arc-shaped rod 17 is connected between the push plate 16 and the movable seat 15. The movable seat 15 is slidably assembled in the ring frame 2, and a second motor is mounted on the movable seat 15. A gear 18 is provided on the output shaft of the second motor. The gear 18 meshes with the arc-shaped rack 14 to drive the movable seat 15 to slide along the ring frame 2, and pushes the push plate 16 to push the connecting seat 5 along the tube opening 3 through the arc-shaped rod 17.

[0041] When the second motor of one side of the annular frame 2 is started, the gear 18 meshes and rotates along the arc-shaped rack 14, driving the moving seat 15 to slide smoothly along the arc-shaped trajectory of the annular frame 2. While sliding, the moving seat 15 simultaneously pushes the push plate 16 to move through the arc-shaped rod 17. The end face of the push plate 16 abuts against the side wall of the connecting seat 5, thereby pushing the connecting seat 5 to move along the longitudinal trajectory of the passage 3 of the annular frame 2. When the connecting seat 5 moves, it simultaneously drives the stirring drum 1 to rotate smoothly around its own center. Combined with the drag reduction effect of the universal ball support 38, the tilt angle adjustment in the corresponding direction (front and back or left and right) is achieved. After the adjustment is completed, the action of the opposing pushing mechanism needs to be controlled to push the connecting seat 5 back to the top connection of the two passages 3 and reset it. Only then can the pushing mechanism of the other set of annular frames 2 be started to perform tilt adjustment in the other direction, ensuring that the adjustment process is interference-free and precisely controllable.

[0042] In this embodiment, the upper and lower ends of the stirring shaft 40 are respectively connected to the upper support 19 and the lower support 20. The two ends of the arc frame 11 are respectively connected to the upper support 19 and the lower support 20. The driving assembly includes a third motor 21 and a fourth motor 22 respectively embedded in the upper support 19 and the lower support 20. One end of the stirring blade 12 is connected to a connecting shaft 23, which is rotatably mounted on the inner end of the arc frame 11. The other end of the connecting shaft 23 extends through into the interior of the arc frame 11, and a key block 24 is provided at its end. Connecting blocks 25 are provided on both sides of the key block 24. The key block 24 of the stirring blade 12 on the same side The right connecting block 25 is connected in series with the first steel wire rope 26, and the left connecting block 25 is connected in series with the second steel wire rope 27. The output shaft of the third motor 21 is provided with a first torsion block 28, and the two ends of the first torsion block 28 are respectively connected to the first steel wire rope 26 through the first connecting rope 29. The output shaft of the fourth motor 22 is provided with a second torsion block 30, and the two ends of the second torsion block 30 are respectively connected to the second steel wire rope 27 through the second connecting rope 31. Several guide wheels 32 are provided in the arc frame 11 to guide the first steel wire rope 26 and the second steel wire rope 27.

[0043] The guide wheel 32 can provide stable guidance and limit for the two wire ropes, preventing the wire ropes from shifting, loosening or jamming during the pulling process, and ensuring the transmission stability of the wire ropes.

[0044] When it is necessary to adjust the angle of the stirring blade 12, start the third motor 21 or the fourth motor 22. The output shaft of the motor drives the corresponding torsion block to rotate. When the torsion block rotates, it pulls the connecting rope. The connecting rope drives the corresponding wire rope to tighten or loosen. The wire rope pulls all the key blocks 24 to rotate synchronously. The key blocks 24 drive the connecting shaft 23 and the stirring blade 12 to complete the angle switching synchronously.

[0045] This driving method can realize the synchronous, unidirectional, and angular adjustment of all stirring blades 12. After the stirring blade 12 is switched to the appropriate angle, the corresponding third motor 21 or fourth motor 22 is turned off, and the stirring blade 12 can maintain a fixed angle and rotate synchronously with the arc frame 11, and cooperate with the stirring paddle 10 to complete the coordinated stirring operation.

[0046] After adjustment, the stirring blade 12 can accurately adapt to the current tilt angle of the mixing drum 1, ensuring that the stirring blade 12 can always penetrate deep into the mixed material accumulation area, maximizing the mixing contact area, effectively breaking the dead corners of the mixed material accumulation, and avoiding the problem of insufficient mixing of local mixed materials. After the stirring blade 12 is switched to the appropriate angle, the corresponding third motor 21 or fourth motor 22 is turned off. The stirring blade 12 maintains a fixed angle and rotates synchronously with the arc frame 11, forming a coordinated mixing with the stirring paddle 10, further improving the mixing uniformity and mixing efficiency.

[0047] In this embodiment, the stirring paddle 10 includes a radial rod 33 fixedly connected to the shaft of the stirring shaft 40 and an arc-shaped blade 34 fixed to the end of the radial rod 33. The cross-section of the arc-shaped blade 34 is V-shaped. When the stirring shaft 40 drives the stirring paddle 10 to rotate, the V-shaped arc-shaped blade 34 can form a triple action of shearing, pushing and tumbling on the mixture during the rotation process. It can quickly break up the clumps of raw materials and promote the mixture to form convection in the mixing drum 1, effectively improving the mixing efficiency and mixing uniformity of the mixture.

[0048] In this embodiment, a guide plate 35 is provided on the upper part of the stirring shaft 40. The guide plate 35 is located below the feed valve 7. The guide plate 35 rotates coaxially with the stirring shaft 40. Several annular discharge slots 36 are opened on the bottom surface of the guide plate 35. Several pusher plates 37 are evenly distributed on the guide plate 35. The pusher plates 37 divide the space above the guide plate 35 into multiple independent areas.

[0049] During the feeding operation, the raw materials fall from the feed valve 7 to the surface of the guide plate 35. The continuously rotating guide plate 35 pushes the raw materials to rotate synchronously through the pusher plate 37. During the rotation, the raw materials will continuously fall through the annular drop bar 36 on the bottom surface to different positions in the mixing drum 1, making the distribution of raw materials in the mixing drum 1 more uniform, effectively reducing dead corners in subsequent mixing operations, and further improving the overall uniformity of the mixture.

[0050] In this embodiment, the base 4 is equipped with a negative pressure adsorption chamber, which is connected to the mixing drum 1 through a pipe. The negative pressure adsorption chamber is connected to an external air pump through a hose. During the mixing of asphalt mixture, the asphalt will volatilize and produce a small amount of harmful gas when heated. At this time, the air pump is started, which can create a stable negative pressure environment inside the negative pressure adsorption chamber. The harmful gas volatilized in the mixing drum 1 will be quickly drawn into the negative pressure adsorption chamber through the pipe under the action of negative pressure, and then the harmful gas will be discharged to the external treatment equipment for purification treatment through the hose.

[0051] This embodiment also includes a method for producing odor-free and environmentally friendly asphalt mixtures, comprising the following steps:

[0052] S1. Prepare dried raw materials such as asphalt and aggregates according to the proportion; adjust the angle of the mixing drum 1 to the feeding position, connect the external feeding pipe to the feeding valve 7, open the feeding valve 7 to feed the material at a uniform speed, close the feeding valve 7 after completion, and remove the feeding pipe.

[0053] S2. Start the first motor to drive the stirring shaft 40 and periodically adjust the tilt angle of the stirring drum 1 to prevent dead angles. When the tilt angle of the stirring drum 1 changes, start the third motor 21 or the fourth motor 22 simultaneously to drive the first torsion block 28 and the second torsion block 30 on the output shaft to rotate, thereby pulling the steel wire rope and driving the key block 24 of the stirring blade 12 to move together, so that the stirring blade 12 switches between the horizontal and vertical states. The switching process is adaptively adjusted with the tilt angle of the stirring drum 1, so that the stirring blade 12 switches to the state that is suitable for the current tilt angle and stirs in coordination with the stirring shaft 40.

[0054] S3. Adjust the mixing drum 1 so that the discharge valve 8 is aligned with the discharge port 9 to discharge the material; after discharge, use high-temperature steam to clean the residue inside the drum and complete the equipment cleaning.

[0055] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-odor, environmentally friendly asphalt mixture production equipment, characterized in that: The device includes a spherical stirring drum and a support assembly located on its outer side. The support assembly consists of two sets of annular frames that are connected in a cross shape around the stirring drum, and the curvature of the annular frames is adapted to the outer contour of the stirring drum. The upper half of the annular frames has a sluice gate, and the tops of the two sluice gates are interconnected. A base is provided at the middle of the top of the stirring drum, and a connecting seat at the top of the base extends through the sluice gate to the outside of the annular frame. A limiting block is provided at the top of the connecting seat. Pushing mechanisms are movably embedded on the left and right sides of the annular frames. The pushing mechanisms push the connecting seat to move along the sluice gate, thereby driving the stirring drum to rotate. The mixing drum is equipped with a feed valve at the top and a discharge valve at the bottom. The bottom ends of the two sets of annular frames are connected to a discharge port corresponding to the discharge valve. A first motor is mounted on the base, and the top of the mixing shaft inside the mixing drum is coaxially connected to the output shaft of the first motor. Several sets of mixing blades are spaced apart along the axial direction on the mixing shaft. Arc-shaped frames are connected to both sides of the mixing shaft, with the upper and lower ends of the arc-shaped frames corresponding to the upper and lower ends of the mixing shaft, and the arc-shaped frames are adapted to the inner contour of the mixing drum. Several mixing blades are provided inside the arc-shaped frames, and a drive assembly is embedded inside the arc-shaped frames. The drive assembly drives all the mixing blades to rotate synchronously along their own axial direction. The upper and lower ends of the stirring shaft are respectively connected to an upper support and a lower support. The two ends of the arc-shaped frame are respectively connected to the upper support and the lower support. The drive assembly includes a third motor and a fourth motor respectively embedded in the upper support and the lower support. One end of the stirring blade is connected to a connecting shaft, which is rotatably mounted on the inner end of the arc-shaped frame. The other end of the connecting shaft extends through into the interior of the arc-shaped frame. A key block is provided at its end, and connecting blocks are provided on both sides of the key block. The connecting blocks on the same side of the stirring blade are connected in series on the right side by a first steel wire rope, and the connecting blocks on the left side are connected in series by a second steel wire rope. A first torsion block is provided on the output shaft of the third motor. The two ends of the first torsion block are respectively connected to the first steel wire rope by a first connecting rope. A second torsion block is provided on the output shaft of the fourth motor. The two ends of the second torsion block are respectively connected to the second steel wire rope by a second connecting rope.

2. The tasteless environment-friendly asphalt mixture production equipment according to claim 1, characterized in that: The lower half of the annular frame has a receiving cavity that communicates with the tube opening. Arc-shaped racks are provided on both the left and right sides of the annular frame. The pushing mechanism includes a movable seat, a push plate, and an arc-shaped rod. The arc of the arc-shaped rod is adapted to the contour of the annular frame. The arc-shaped rod is connected between the push plate and the movable seat. The movable seat is slidably assembled inside the annular frame, and a second motor is mounted on the movable seat. A gear is provided on the output shaft of the second motor. The gear meshes with the arc-shaped rack to drive the movable seat to slide along the annular frame, and pushes the push plate to push the connecting seat to move along the tube opening through the arc-shaped rod.

3. The tasteless environment-friendly asphalt mixture production equipment according to claim 1, characterized in that: The arc-shaped frame is equipped with several guide wheels to guide the first wire rope and the second wire rope.

4. The tasteless environment-friendly asphalt mixture production equipment according to claim 1, characterized in that: The impeller includes a radial rod fixedly connected to the shaft and an arc-shaped blade fixed to the end of the radial rod, the arc-shaped blade having a V-shaped cross-section.

5. The tasteless environment-friendly asphalt mixture production equipment according to claim 1, characterized in that: A guide plate is provided on the upper part of the stirring shaft. The guide plate is located below the feed valve. The guide plate rotates coaxially with the stirring shaft. Several annular discharge slots are opened on the bottom surface of the guide plate. Several pusher plates are evenly distributed on the guide plate, which divide the space above the guide plate into multiple independent areas.

6. The tasteless environment-friendly asphalt mixture production equipment according to claim 1, characterized in that: The inner end of the annular frame is provided with several omnidirectional ball supports, which abut against the surface of the mixing drum; the lower part of the annular frame is connected with several legs.

7. The tasteless environment-friendly asphalt mixture production equipment according to claim 1, characterized in that: The base is equipped with a negative pressure adsorption chamber, which is connected to the stirring drum through a pipe. The negative pressure adsorption chamber is connected to an external air pump through a hose to extract harmful gases that volatilize during the stirring process.

8. A method for producing odorless and environmentally friendly asphalt mixture, characterized in that, The preparation process using the odor-free and environmentally friendly asphalt mixture production equipment as described in claim 1 includes the following steps: S1. Prepare the raw materials for drying according to the ratio; adjust the angle of the mixing drum to the feeding position, connect the external feeding pipe to the feeding valve, open the feeding valve to feed the material at a uniform speed, close the feeding valve after completion, and remove the feeding pipe. S2. Start the first motor to drive the stirring shaft, and periodically adjust the tilt angle of the stirring drum to prevent dead angles; S3. Adjust the mixing drum so that the discharge valve is aligned with the discharge port; after discharge, use high-temperature steam to clean the residue inside the drum and complete the equipment cleaning.

9. The method according to claim 8, wherein the method is characterized by: In step S2, when the tilt angle of the mixing drum changes, the third motor or the fourth motor is started simultaneously to drive the first torsion block and the second torsion block on the output shaft to rotate, thereby pulling the steel wire rope to drive the key block of the mixing blade to move together, so that the mixing blade switches between the horizontal and vertical states; the switching process is adaptively adjusted with the tilt angle of the mixing drum, so that the mixing blade switches to a state that is suitable for the current tilt angle and stirs in coordination with the mixing shaft.

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