Asphalt stirring device
By designing an asphalt mixing device that uses scrapers to remove deposits from the inner wall of the mixing drum and switches the feed inlet position, the problems of uneven mixture distribution and complex unloading structure are solved, achieving uniform mixing and simplified unloading.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-20
AI Technical Summary
In existing technologies, the distribution of aggregates, mineral powders and modifiers in the asphalt mixture is uneven during the mixing process, and the bottom-mounted discharge port requires a pressure-resistant sealing structure, which makes the equipment discharge structure complex.
Design an asphalt mixing device including a mixing drum, a mixing component, and an actuation component. The device uses a mixing blade scraper to remove the adhering material from the inner wall of the mixing drum, and a second actuation component to drive the mixing drum to rotate and switch the position of the feed inlet, thereby achieving uniform mixing and simplifying unloading.
It achieves uniform distribution of aggregates, mineral powder and modifiers in the mixture, avoids pressure-resistant sealing structure, simplifies unloading structure and reduces manufacturing cost.
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Figure CN224016076U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of preparing road materials, and particularly relates to a bitumen mixing device. BACKGROUND
[0002] Bitumen mixing is an important process in road construction, which can make bitumen, aggregate, mineral powder and modifier form a uniform and stable system through mechanical forced mixing. Full mixing of bitumen mixture can make the aggregate, mineral powder and modifier be uniformly distributed, avoid material segregation or clumping, and further ensure that the mixture has good anti-rutting and ductility.
[0003] However, in the bitumen mixing process, the high viscosity characteristics of bitumen can easily cause double technical problems: on the one hand, molten bitumen is easy to adhere to the inner wall of the mixing bin under the action of mechanical shearing, forming a dynamic isolation layer, which causes the aggregate, mineral powder and modifier in the mixture to be unevenly distributed in the bitumen; on the other hand, the finished mixture is difficult to discharge smoothly from the top and side due to the residual viscous resistance, and the mixing equipment with a lower discharge port needs to be configured with a pressure-resistant sealing structure to ensure that the mixing process does not leak, which leads to a relatively complex discharge structure of the mixing equipment. CONTENT OF THE INVENTION
[0004] The bitumen mixing device provided by the embodiment of the present application solves the technical problems that the aggregate, mineral powder and modifier in the mixture are unevenly distributed in the prior art, and the mixing equipment with a lower discharge port needs to be configured with a pressure-resistant sealing structure, which leads to a relatively complex discharge structure of the mixing equipment.
[0005] The bitumen mixing device provided by the embodiment of the present application comprises a support, a mixing drum rotatably connected to the support and provided with a feeding port, a mixing assembly installed in the interior of the mixing drum, wherein the mixing assembly comprises a mixing shaft and a plurality of mixing paddles axially sleeved on the mixing shaft, each mixing paddle comprises a sleeve pipe, two scrapers and two stirring plates, the two stirring plates are arranged along the radial direction of the sleeve pipe, one end of each stirring plate is connected to the sleeve pipe, and the other end of each stirring plate is connected to the other stirring plate, the two scrapers are used to adhere to the inner wall of the mixing drum to scrape off the materials adhered to the inner wall of the mixing drum, a first actuating assembly installed on the support and having an actuating end connected to the end of the mixing shaft, and a second actuating assembly installed on the support and having an actuating end connected to the mixing drum, configured to drive the mixing drum to rotate around the mixing shaft to switch the feeding port between an upward position and a downward position.
[0006] In a possible implementation, the scraper is arranged to be inclined relative to the axial direction of the stirring shaft.
[0007] In a possible implementation, the extension direction of the scraper is a helix around the stirring shaft.
[0008] In a possible implementation, the scrapers of adjacent stirring blades are arranged to be spaced apart, and the scraped areas partially overlap.
[0009] In a possible implementation, the side surface of the scraper facing the inner wall of the stirring drum is a cylindrical surface.
[0010] In a possible implementation, the first actuating assembly comprises a first motor and a first speed reducer fixedly connected; the first speed reducer is mounted on the support, and an input shaft of the first speed reducer is connected to a rotating shaft of the first motor, and an output shaft of the first speed reducer is connected to an end of the stirring shaft.
[0011] In a possible implementation, the second actuating assembly comprises a second motor, a second speed reducer, a first gear and a second gear; the second motor is fixedly connected to the second speed reducer; the second speed reducer is mounted on the support, and an input shaft of the second speed reducer is connected to a rotating shaft of the second motor, and an output shaft of the second speed reducer is mounted with the first gear; the second gear is arranged coaxially with the stirring shaft, the second gear is fixedly connected to an end surface of the stirring drum, and the second gear is engaged with the first gear.
[0012] In a possible implementation, the asphalt stirring device further comprises a fixing assembly, the fixing assembly comprising a first fixing plate, a second fixing plate and an extension piece; the first fixing plate and the second fixing plate are fixedly connected to the outer side surface of the stirring drum, and the first fixing plate is provided with a first through hole in the axial direction of the stirring shaft, and the second fixing plate is provided with a second through hole in the axial direction of the stirring shaft; the extension piece is fixedly connected to the support; when the feeding port is upward, the extension end of the extension piece is aligned with the first through hole; when the feeding port is downward, the extension end of the extension piece is aligned with the second through hole.
[0013] In a possible implementation, further comprising a cover hinged to the stirring drum and configured to open and close the feeding port.
[0014] The technical scheme provided in the embodiments of the present application has at least the following technical effects:
[0015] The asphalt mixing device provided by some embodiments of the present application has the advantages that when the asphalt mixing device is used to mix asphalt, the asphalt, aggregates, mineral powder and modifiers are added into the stirring cylinder through the feeding port, the actuating end of the first actuating assembly drives the stirring shaft to rotate, the stirring assembly as a whole rotates in the stirring cylinder, the stirring plates of the stirring paddles are used to stir the asphalt, aggregates, mineral powder and modifiers in the stirring cylinder, and the scrapers of the stirring paddles synchronously scrape off the materials attached to the inner wall of the stirring cylinder; after the stirring assembly completes the sufficient stirring of the mixture, the actuating end of the second actuating assembly drives the stirring cylinder to rotate around the stirring shaft until the feeding port faces downward, and the mixture in the stirring cylinder flows out of the feeding port. When the asphalt mixing device is used to stir the mixture, the materials attached to the inner wall of the stirring cylinder can be scraped off, the aggregates, mineral powder and modifiers in the mixture are uniformly distributed in the asphalt, and after the stirring is completed, the second actuating assembly is used to drive the stirring cylinder until the feeding port faces downward, and the mixture flows out of the feeding port, so that a pressure-resistant sealing structure does not need to be arranged, a complex unloading structure is avoided, and the manufacturing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0017] Figure 1 and Figure 2 The structural schematic diagrams of the asphalt mixing device provided by some embodiments of the present application are shown from different angles.
[0018] Figure 3 The structural schematic diagram of the stirring assembly provided by some embodiments of the present application is shown.
[0019] Figure 4 The structural schematic diagram of the stirring paddle provided by some embodiments of the present application is shown.
[0020] The drawings show that: 100 is a support; 200 is a stirring cylinder; 210 is a feeding port; 300 is a stirring assembly; 310 is a stirring shaft; 320 is a stirring paddle; 321 is a sleeve; 322 is a scraper; 3221 is a cylindrical surface; 323 is a stirring plate; 400 is a first actuating assembly; 410 is a first motor; 420 is a first speed reducer; 500 is a second actuating assembly; 510 is a second motor; 520 is a second speed reducer; 530 is a first gear; 540 is a second gear; 600 is a fixing assembly; 610 is a first fixing plate; 611 is a first through hole; 620 is a second fixing plate; 621 is a second through hole; 630 is an extension piece; and 700 is a cover. DETAILED DESCRIPTION
[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0022] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0023] This application provides an asphalt mixing device, such as... Figure 1 and Figure 2 As shown, the asphalt mixing device includes a support 100, a mixing drum 200, a mixing assembly 300, a first actuation assembly 400, and a second actuation assembly 500.
[0024] The mixing drum 200 is rotatably connected to the support 100, and the mixing drum 200 is provided with a feed inlet 210;
[0025] A stirring assembly 300 is installed inside a stirring drum 200. The stirring assembly 300 includes a stirring shaft 310 and a plurality of stirring blades 320 axially mounted on the stirring shaft 310. The two ends of the stirring shaft 310 extend from the two end faces of the stirring drum 200. Each stirring blade 320 includes a sleeve 321, two scrapers 322 and two stirring plates 323. The two stirring plates 323 are arranged radially along the sleeve 321. One end of each stirring plate 323 is connected to the sleeve 321, and the other end of each stirring plate 323 is connected to the two scrapers 322. The two scrapers 322 are used to adhere to the inner wall of the stirring drum 200 to scrape off the material attached to the inner wall of the stirring drum 200.
[0026] The first actuating assembly 400 is mounted on the support 100, and an actuating end of the first actuating assembly 400 is connected to an end of the stirring shaft 310. The actuating end of the first actuating assembly 400 can drive the stirring assembly 300 to rotate in the stirring drum 200 through the stirring shaft 310, so that the stirring assembly 300 stirs the asphalt, aggregate, mineral powder and modifier in the stirring drum 200.
[0027] The second actuating assembly 500 is mounted on the support 100, and an actuating end of the second actuating assembly 500 is connected to the stirring drum 200, configured to drive the stirring drum 200 to rotate around the stirring shaft 310 to switch the feeding port 210 between the upward position and the downward position. When unloading is needed, the second actuating assembly 500 drives the stirring drum 200 to rotate around the stirring shaft 310 to make the feeding port 210 downward; after unloading is completed, the second actuating assembly 500 drives the stirring drum 200 to rotate around the stirring shaft 310 to make the feeding port 210 upward, ready for the next stirring.
[0028] When the asphalt is stirred by using the asphalt stirring device, the asphalt, aggregate, mineral powder and modifier are added into the stirring drum 200 from the feeding port 210, the actuating end of the first actuating assembly 400 drives the stirring shaft 310, so that the stirring assembly 300 as a whole rotates in the stirring drum 200, the stirring plates 323 of the stirring paddles 320 are used to stir the asphalt, aggregate, mineral powder and modifier in the stirring drum 200, and the scrapers 322 of the stirring paddles 320 scrape the materials attached to the inner wall of the stirring drum 200; after the stirring assembly 300 completes the sufficient stirring of the mixture, the actuating end of the second actuating assembly 500 drives the stirring drum 200 to rotate around the stirring shaft 310 until the feeding port 210 is downward, and the mixture in the stirring drum 200 flows out from the feeding port 210.
[0029] When the mixture is stirred by using the asphalt stirring device, the materials attached to the inner wall of the stirring drum 200 can be scraped, so that the aggregate, mineral powder and modifier in the mixture are uniformly distributed in the asphalt, and after the stirring is completed, the stirring drum 200 is driven by the second actuating assembly 500 until the feeding port 210 is downward, and the mixture flows out from the feeding port 210, without the need to set a pressure-resistant sealing structure, avoiding a complex unloading structure, and reducing the manufacturing cost.
[0030] As shown in FIG. 1, Figure 3 In some embodiments of the present application, the scraper 322 is arranged to be inclined relative to the axial direction of the stirring shaft 310. The force applied by the scraper 322 to the asphalt attached to the inner wall of the stirring drum 200 can be decomposed into a component parallel to the stirring shaft 310 and a tangential component along the inner wall of the stirring drum 200, so that the attached asphalt can be more easily scraped.
[0031] Further, the extending direction of the scraper 322 is a helix around the stirring shaft 310. The plurality of stirring blades 320 form a helix, so that when the stirring assembly 300 rotates, the mixture can be moved along the circumferential direction of the stirring drum 200 and also moved along the axial direction of the stirring drum 200, so that the aggregate, the mineral powder and the modifier are more uniformly distributed in the asphalt.
[0032] Further, the scrapers 322 of adjacent stirring blades 320 are arranged in a spaced manner, so that the asphalt scraped from the inner wall of the stirring drum 200 can flow from the space, and the asphalt accumulated in front of the scraper 322 is greatly reduced. Moreover, the areas scraped by the scrapers 322 of adjacent stirring blades 320 partially overlap, so that the inner wall of the stirring drum 200 is not missed, and the inner wall of the stirring drum 200 can be completely covered by the scrapers 322.
[0033] As shown in Figure 4 , the side of the scraper 322 facing the inner wall of the stirring drum 200 is a cylindrical surface 3221. The cylindrical surface 3221 can avoid scratching the inner wall of the stirring drum 200, so that the inner wall of the stirring drum 200 remains smooth and the asphalt attached to the inner wall of the stirring drum 200 is as little as possible.
[0034] Some embodiments of the present application provide a specific structure of the first actuating assembly 400, as shown in Figure 1 and Figure 2 . The first actuating assembly 400 includes a first motor 410 and a first speed reducer 420 fixedly connected. The first speed reducer 420 is installed on the support 100, and the input shaft of the first speed reducer 420 is connected to the rotating shaft of the first motor 410, and the output shaft of the first speed reducer 420 is connected to the end of the stirring shaft 310.
[0035] When the asphalt mixing device is working, the power of the first motor 410 is transmitted to the stirring shaft 310 through the first speed reducer 420, and the stirring assembly 300 rotates in the stirring drum 200 to stir the asphalt, the aggregate, the mineral powder and the modifier, and scrape the materials attached to the inner wall of the stirring drum 200.
[0036] Of course, in other embodiments of the present application, the first actuating assembly 400 can also have other structures, for example, the first actuating assembly 400 includes a small diesel engine, a first pulley, a second pulley and a belt, the first pulley is installed on the crankshaft of the small diesel engine, the second pulley is installed on the end of the stirring shaft 310, and the belt is wound around the first pulley and the second pulley.
[0037] Some embodiments of the present application provide a specific structure of the second actuating assembly 500, as shown in Figure 1 and Figure 2The second actuating assembly 500 includes a second motor 510, a second speed reducer 520, a first gear 530 and a second gear 540. The second motor 510 is fixedly connected with the second speed reducer 520. The second speed reducer 520 is mounted on the support 100, and an input shaft of the second speed reducer 520 is connected with a rotating shaft of the second motor 510, and an output shaft of the second speed reducer 520 is mounted with the first gear 530. The second gear 540 is coaxially arranged with the stirring shaft 310, and is fixedly connected with an end surface of the stirring drum 200, and is engaged with the first gear 530.
[0038] After the asphalt mixing device completes the stirring work, the second motor 510 drives the first gear 530 through the second speed reducer 520, the first gear 530 drives the second gear 540, and the stirring drum 200 fixedly connected with the second gear 540 rotates around the stirring shaft 310 until the feeding port 210 faces downward, so that the mixture in the stirring drum 200 flows out through the feeding port 210.
[0039] Of course, in other embodiments of the present application, the second actuating assembly 500 can also have other structural forms, for example, the second actuating assembly 500 includes a second motor 510, a first sprocket, a second sprocket and a chain; the first sprocket is mounted on the rotating shaft of the second motor 510, the second sprocket is coaxially arranged with the stirring drum 200, and is fixedly connected with the end surface of the stirring drum 200, the number of teeth of the second sprocket is greater than that of the first sprocket, and the chain is wound around the first sprocket and the second sprocket.
[0040] As shown in Figure 1 and Figure 2 In some embodiments of the present application, the asphalt mixing device further includes a fixing assembly 600, and the fixing assembly 600 includes a first fixing plate 610, a second fixing plate 620 and an extension piece 630. The first fixing plate 610 and the second fixing plate 620 are fixedly connected with the outer side surface of the stirring drum 200, and the first fixing plate 610 is provided with a first through hole 611 along the axial direction of the stirring shaft 310, and the second fixing plate 620 is provided with a second through hole 621 along the axial direction of the stirring shaft 310. The extension piece 630 is fixedly connected with the support 100; when the feeding port 210 faces upward, the extension end of the extension piece 630 is aligned with the first through hole 611; when the feeding port 210 faces downward, the extension end of the extension piece 630 is aligned with the second through hole 621.
[0041] When the second actuation assembly 500 drives the stirring drum 200 to rotate around the stirring shaft 310 until the feed inlet 210 faces upward, the telescopic end of the telescopic member 630 extends and enters the first through hole 611, and the telescopic member 630 fixes the position of the stirring drum 200 through the first fixing plate 610. When the second actuation assembly 500 drives the stirring drum 200 to rotate around the stirring shaft 310 until the feed inlet 210 faces downward, the telescopic end of the telescopic member 630 extends and enters the second through hole 621, and the telescopic member 630 fixes the position of the stirring drum 200 through the second fixing plate 620.
[0042] When the asphalt mixing plant is mixing and unloading, the fixing component 600 can fix the position of the mixing drum 200 to prevent the mixing drum 200 from rotating and affecting the mixing and unloading work.
[0043] like Figure 1 and Figure 2 As shown, in some embodiments of this application, the asphalt mixing device further includes a baffle 700, which is hinged to the mixing drum 200 and configured to open and close the feed inlet 210. After asphalt, aggregate, mineral powder, and modifier are placed into the mixing drum 200 and before mixing begins, the baffle 700 is rotated to close the feed inlet 210. When unloading is required after mixing, the baffle 700 is rotated to open the feed inlet 210, and then the second actuation assembly 500 drives the mixing drum 200 to rotate around the mixing shaft 310, so that the feed inlet 210 faces downward.
[0044] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.
[0045] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.
Claims
1. An asphalt mixing device, characterized in that, include: support; A mixing drum, which is rotatably connected to the support, and the mixing drum is provided with a feed inlet; A stirring assembly is installed inside a stirring drum; wherein the stirring assembly includes a stirring shaft and a plurality of stirring blades axially mounted on the stirring shaft; wherein each stirring blade includes a sleeve, two scrapers and two stirring plates, the two stirring plates are arranged radially along the sleeve, one end of each of the two stirring plates is connected to the sleeve, and the other end of each of the two stirring plates is connected to the two stirring plates respectively; the two scrapers are used to conform to the inner wall of the stirring drum to scrape off the material adhering to the inner wall of the stirring drum. A first actuation assembly, the first actuation assembly being mounted on the bracket, and the actuating end of the first actuation assembly being connected to the end of the stirring shaft; and A second actuation component, mounted on the bracket and with its actuating end connected to the stirring drum, is configured to drive the stirring drum to rotate about the stirring shaft to switch the feed inlet between an upward and a downward position.
2. The asphalt mixing device according to claim 1, characterized in that, The scraper is inclined relative to the axial direction of the stirring shaft.
3. The asphalt mixing device according to claim 2, characterized in that, The scraper extends in a spiral direction around the stirring shaft.
4. The asphalt mixing device according to claim 3, characterized in that, The scrapers of adjacent stirring blades are spaced apart, and the scraped areas partially overlap.
5. The asphalt mixing device according to any one of claims 1-4, characterized in that, The side of the scraper facing the inner wall of the mixing drum is cylindrical.
6. The asphalt mixing device according to claim 1, characterized in that, The first actuation component includes a first motor and a first reducer that are fixedly connected; The first reducer is mounted on the bracket, and the input shaft of the first reducer is connected to the rotating shaft of the first motor, and the output shaft of the first reducer is connected to the end of the stirring shaft.
7. The asphalt mixing device according to claim 1, characterized in that, The second actuation component includes a second motor, a second reducer, a first gear, and a second gear; The second motor is fixedly connected to the second reducer; The second reducer is mounted on the bracket, and the input shaft of the second reducer is connected to the rotating shaft of the second motor, and the output shaft of the second reducer is equipped with the first gear; The second gear is coaxially arranged with the stirring shaft, the second gear is fixedly connected to the end face of the stirring cylinder, and the second gear meshes with the first gear.
8. The asphalt mixing device according to claim 1, characterized in that, Also includes: A fixing assembly, the fixing assembly including a first fixing plate, a second fixing plate, and a telescopic member; The first fixing plate and the second fixing plate are fixedly connected to the outer side of the stirring cylinder, and the first fixing plate is provided with a first through hole along the axial direction of the stirring shaft, and the second fixing plate is provided with a second through hole along the axial direction of the stirring shaft. The telescopic component is fixedly connected to the bracket; when the feed inlet is facing upward, the telescopic end of the telescopic component is aligned with the first through hole; when the feed inlet is facing downward, the telescopic end of the telescopic component is aligned with the second through hole.
9. The asphalt mixing device according to claim 1, characterized in that, Also includes: A baffle, hinged to the mixing drum, is configured to open and close the feed inlet.