阅读说明：本技术 一种沥青混凝土制备工艺 (Preparation process of asphalt concrete ) 是由 黄雨晨 周国庆 任良斌 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种沥青混凝土制备工艺,包括以下步骤：S1、启动动力组件,动力组件驱动石料筛分粉碎组件和搅拌组件工作；S2、将碎石从石料进口投入,由石料筛分粉碎组件将大块碎石和小块碎石进行两次筛分,使小块碎石落入搅拌腔内,并对大块碎石挤压碎裂加入到搅拌腔内；S3、对沥青进口通入沥青,在搅拌组件的搅拌板旋转一周时控制开关组件将沥青进口打开一次,使沥青定量进入搅拌腔和碎石均匀混合；S4、完成搅拌后,在出料口处放置收集车,随后开启料盖,使搅拌完成的沥青混凝土流出至下方收集车内；该沥青混凝土制备不仅操作简单,而且能够筛分石料制备的沥青混凝土更加均匀。(The invention discloses a preparation process of asphalt concrete, which comprises the following steps: s1, starting a power assembly, wherein the power assembly drives the stone screening and crushing assembly and the stirring assembly to work; s2, throwing broken stones from a stone inlet, screening large broken stones and small broken stones twice by a stone screening and crushing assembly to enable the small broken stones to fall into the stirring cavity, extruding and crushing the large broken stones, and adding the crushed stones into the stirring cavity; s3, introducing asphalt into the asphalt inlet, and controlling the switch assembly to open the asphalt inlet once when the stirring plate of the stirring assembly rotates for a circle, so that the asphalt quantitatively enters the stirring cavity and is uniformly mixed with the crushed stone; s4, after stirring, placing a collecting vehicle at the discharge port, and then opening a material cover to enable the stirred asphalt concrete to flow out to the collecting vehicle below; the preparation of the asphalt concrete is not only simple to operate, but also more uniform by screening the asphalt concrete prepared from stone materials.)

1. The asphalt concrete preparation process is characterized in that a stirring box arranged in the vertical direction is used, the lower end of the stirring box is a stirring cavity, the bottom of the stirring box is provided with a discharge hole communicated with the stirring cavity, the discharge hole is provided with a material cover, the upper end of the stirring box is provided with a stone inlet, and the side wall of the stirring box close to the lower end is provided with an asphalt inlet; the lower end of a stone inlet in the stirring box is provided with a stone screening and crushing assembly, the stirring box is provided with a stirring assembly in a stirring cavity, the side wall of the stirring box is provided with a switch assembly matched with the stirring assembly, the switch assembly is used for controlling the opening and closing of an asphalt inlet, and the outer side of the stirring box is provided with a power assembly used for driving the stone screening and crushing assembly and the stirring assembly to work; the preparation process of the asphalt concrete comprises the following steps:

s1, starting a power assembly, wherein the power assembly drives the stone screening and crushing assembly and the stirring assembly to work;

s2, throwing broken stones from a stone inlet, screening large broken stones and small broken stones twice by a stone screening and crushing assembly to enable the small broken stones to fall into the stirring cavity, extruding and crushing the large broken stones, and adding the crushed stones into the stirring cavity;

s3, introducing asphalt into the asphalt inlet, and controlling the switch assembly to open the asphalt inlet once when the stirring plate of the stirring assembly rotates for a circle, so that the asphalt quantitatively enters the stirring cavity and is uniformly mixed with the crushed stone;

s4, after the stirring is completed, placing a collecting vehicle at the discharge port, and then opening the material cover to enable the asphalt concrete after the stirring to flow out to the collecting vehicle below.

2. The asphalt concrete preparation process according to claim 1, wherein the stone material screening and crushing assembly comprises a turntable and a bracket, the turntable is rotatably connected to the rear side, the rear side wall of the stirring box is provided with a vertical notch, the inner side of the front side wall of the stirring box is provided with a vertical chute, and the vertical notch and the vertical chute are opposite to each other along the front-rear direction; the front end of the support extends into the vertical sliding groove, the rear end of the support extends out of the output sliding groove and is provided with a rear convex column, a first connecting rod is hinged at the eccentric position of the rotary table, the other end of the first connecting rod is hinged with the rear convex column, and the support is driven to reciprocate up and down by the first connecting rod when the rotary table rotates;

a left boss and a right boss are arranged in the stirring box side by side from left to right, a left inclined plane inclined downwards to the right is arranged at the upper end of the left boss, a right inclined plane inclined downwards to the right is arranged at the upper end of the right boss, and the left inclined plane and the right inclined plane are parallel to each other; a left inclined sieve plate parallel to the left inclined plane is fixedly arranged on the bracket right below the stone inlet, and a right inclined sieve plate parallel to the right inclined plane is arranged between the left boss and the right boss; the right end of the left inclined sieve plate is connected with the left side surface of the left boss in a sliding manner, the right end of the right inclined sieve plate is connected with the left side surface of the right boss in a sliding manner, and the left end of the right inclined sieve plate and the right side surface of the left boss are positioned in the same vertical plane; when the support is located at the lower end position, the left inclined plane and the right inclined sieve plate are located in the same inclined plane, when the support is located at the upper end position, the left inclined plane and the left inclined sieve plate are located in the same inclined plane, and the right inclined plane and the right inclined sieve plate are located in the same inclined plane.

3. The process for preparing asphalt concrete according to claim 2, wherein a crushing plate is hinged above the right boss in the stirring tank, a left limiting groove is formed in the left end of the crushing plate, a sliding pin extending into the left limiting groove is arranged on the support, and the support drives the left end of the crushing plate to move up and down when moving up and down.

4. The process for preparing asphalt concrete according to claim 2, wherein the stirring assembly comprises a stirring plate, a first convex column rotatably connected in the stirring tank is arranged on the front side of the stirring plate, and a second convex column extending out of the stirring tank is arranged on the rear side of the stirring plate.

5. The process for preparing asphalt concrete according to claim 4, wherein a scraping ring is sleeved on the stirring plate, and the scraping ring is connected to the stirring plate in a sliding manner along the radial direction of the first convex column; inside wall is equipped with the track groove around the agitator tank, both sides are equipped with the third projection that stretches into the track inslot around the scraping ring, and when the stirring board rotated, the scraping ring was followed the radial reciprocating sliding of first projection on the stirring board.

6. The asphalt concrete preparation process according to claim 4, wherein the switch assembly comprises a first spring, an upper notch communicated with the asphalt inlet is formed in the inner side of the left side wall of the stirring box above the asphalt inlet, a lower chute is formed below the asphalt inlet, a gate plate is connected in the lower chute in a sliding manner, the asphalt inlet is opened when the gate plate moves to the upper end position, and the asphalt inlet is closed when the gate plate moves to the lower end position; a shifting plate extending rightwards is arranged on the right side of the upper end of the flashboard, a blocking plate extending upwards to block an upper notch is arranged on the shifting plate, and the first spring is located in the upper notch and used for forcing the flashboard to move downwards; when the stirring plate rotates, the flashboard is driven to move upwards through the stirring plate, and when the stirring plate is separated from the stirring plate, the flashboard moves downwards under the action of the first spring.

7. The process for preparing asphalt concrete according to claim 4, wherein the power assembly comprises a first motor, a mounting plate is arranged at the rear side of the stirring tank, the first motor is fixedly mounted on the mounting plate, an output shaft of the first motor is coaxially and fixedly connected with the second convex column, a lower rotating wheel is fixedly arranged on the output shaft of the first motor, an upper rotating wheel is coaxially and fixedly arranged at the rear end of the rotating disc, and a transmission belt is arranged between the lower rotating wheel and the upper rotating wheel.

Technical Field

The invention relates to the technical field of asphalt concrete, in particular to a preparation process of asphalt concrete.

Background

The asphalt concrete is a mixture prepared by mixing broken stone or crushed gravel, stone chips or sand, mineral powder and the like with a certain proportion of road asphalt material under strictly controlled conditions. Asphalt concrete is commonly used for paving roads, and has the advantages of economy, safety, smooth surface, no joint, no dust emission, easy cleaning, high construction progress block, high strength and the like. The preparation of asphalt concrete in the prior art has the following problems:

1. when the existing equipment is used for preparing and processing asphalt concrete, the crushed stone materials cannot be effectively screened, so that large crushed stones are easily mixed in the mixed finished product materials, and the subsequent processing and use of the finished product materials are influenced;

2. the large broken stones separated by the sieve can not be reused, thereby causing waste of stones and influencing the total using amount of the stones;

3. in the mixing process of asphalt and gravel, the asphalt is adhered to the inner stirring plate and is difficult to remove after being adhered to the stirring plate for a long time, so that the stirring effect is influenced;

4. when the existing asphalt concrete is prepared, all required asphalt is put in at one time, so that after stirring, the asphalt cannot well wrap each aggregate, the asphalt is not uniformly distributed, and the using effect of the asphalt concrete is influenced.

Disclosure of Invention

The invention aims to provide a preparation process of asphalt concrete, which is simple to operate and can sieve stone to prepare more uniform asphalt concrete.

In order to achieve the purpose, the invention provides the following technical scheme: a process for preparing asphalt concrete comprises the steps of using a stirring box arranged along the vertical direction, wherein the lower end of the stirring box is a stirring cavity, the bottom of the stirring box is provided with a discharge hole communicated with the stirring cavity, the discharge hole is provided with a material cover, the upper end of the stirring box is provided with a stone inlet, and the side wall of the stirring box close to the lower end is provided with an asphalt inlet; the lower end of a stone inlet in the stirring box is provided with a stone screening and crushing assembly, the stirring box is provided with a stirring assembly in a stirring cavity, the side wall of the stirring box is provided with a switch assembly matched with the stirring assembly, the switch assembly is used for controlling the opening and closing of an asphalt inlet, and the outer side of the stirring box is provided with a power assembly used for driving the stone screening and crushing assembly and the stirring assembly to work; the preparation process of the asphalt concrete comprises the following steps:

s1, starting a power assembly, wherein the power assembly drives the stone screening and crushing assembly and the stirring assembly to work;

s2, throwing broken stones from a stone inlet, screening large broken stones and small broken stones twice by a stone screening and crushing assembly to enable the small broken stones to fall into the stirring cavity, extruding and crushing the large broken stones, and adding the crushed stones into the stirring cavity;

s3, introducing asphalt into the asphalt inlet, and controlling the switch assembly to open the asphalt inlet once when the stirring plate of the stirring assembly rotates for a circle, so that the asphalt quantitatively enters the stirring cavity and is uniformly mixed with the crushed stone;

s4, after the stirring is completed, placing a collecting vehicle at the discharge port, and then opening the material cover to enable the asphalt concrete after the stirring to flow out to the collecting vehicle below.

Further, the stone screening and crushing assembly comprises a rotary table and a support, the rotary table is rotatably connected to the rear side, a vertical notch is formed in the rear side wall of the stirring box, a vertical sliding groove is formed in the inner side of the front side wall of the stirring box, and the vertical notch and the vertical sliding groove are opposite to each other along the front-rear direction; the front end of the support extends into the vertical sliding groove, the rear end of the support extends out of the output sliding groove and is provided with a rear convex column, a first connecting rod is hinged at the eccentric position of the rotary table, the other end of the first connecting rod is hinged with the rear convex column, and the support is driven to reciprocate up and down by the first connecting rod when the rotary table rotates;

a left boss and a right boss are arranged in the stirring box side by side from left to right, a left inclined plane inclined downwards to the right is arranged at the upper end of the left boss, a right inclined plane inclined downwards to the right is arranged at the upper end of the right boss, and the left inclined plane and the right inclined plane are parallel to each other; a left inclined sieve plate parallel to the left inclined plane is fixedly arranged on the bracket right below the stone inlet, and a right inclined sieve plate parallel to the right inclined plane is arranged between the left boss and the right boss; the right end of the left inclined sieve plate is connected with the left side surface of the left boss in a sliding manner, the right end of the right inclined sieve plate is connected with the left side surface of the right boss in a sliding manner, and the left end of the right inclined sieve plate and the right side surface of the left boss are positioned in the same vertical plane; when the support is located at the lower end position, the left inclined plane and the right inclined sieve plate are located in the same inclined plane, when the support is located at the upper end position, the left inclined plane and the left inclined sieve plate are located in the same inclined plane, and the right inclined plane and the right inclined sieve plate are located in the same inclined plane.

Further, the stirring box is internally articulated with a crushing plate above the right boss, the left end of the crushing plate is provided with a left limit groove, the support is provided with a sliding pin extending into the left limit groove, and the support drives the left end of the crushing plate to move up and down during up-and-down movement.

Further, the stirring subassembly includes the stirring board, the front side of stirring board is equipped with the first projection of rotation connection in the agitator tank, and the rear side is equipped with the second projection that stretches out the agitator tank.

Furthermore, a scraping ring is sleeved on the stirring plate and is connected to the stirring plate in a sliding mode along the radial direction of the first convex column; inside wall is equipped with the track groove around the agitator tank, both sides are equipped with the third projection that stretches into the track inslot around the scraping ring, and when the stirring board rotated, the scraping ring was followed the radial reciprocating sliding of first projection on the stirring board.

Further, the switch component comprises a first spring, an upper notch communicated with the asphalt inlet is formed in the inner side of the left side wall of the stirring box above the asphalt inlet, a lower chute is formed below the asphalt inlet, a flashboard is connected in the lower chute in a sliding mode, the asphalt inlet is opened when the flashboard moves to the upper end position, and the asphalt inlet is closed when the flashboard moves to the lower end position; a shifting plate extending rightwards is arranged on the right side of the upper end of the flashboard, a blocking plate extending upwards to block an upper notch is arranged on the shifting plate, and the first spring is located in the upper notch and used for forcing the flashboard to move downwards; when the stirring plate rotates, the flashboard is driven to move upwards through the stirring plate, and when the stirring plate is separated from the stirring plate, the flashboard moves downwards under the action of the first spring.

Further, power component includes first motor, the rear side of agitator tank is equipped with the mounting panel, first motor fixed mounting is on the mounting panel, the output shaft and the coaxial fixed connection of second projection of first motor, the fixed runner that is equipped with down on the output shaft of first motor, the coaxial fixed runner that is equipped with in rear end of carousel, be equipped with the drive belt between runner and the last runner down.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. the broken stones are screened through the up-and-down movement of the left inclined sieve plate and the right inclined sieve plate, so that small broken stones fall off from the screen, and large broken stones enter the right inclined plane under the driving of the right inclined sieve plate, so that the added broken stones are not mixed with large broken stones;

2. the large crushed stones are driven into the right inclined plane through the right inclined sieve plate, so that the crushing plate crushes the large crushed stones into small crushed stones, the large crushed stone materials are recycled, and waste of stones is prevented;

3. the asphalt adhered to the stirring plate is scraped by the scraping ring, so that the scraping ring is scraped along the stirring plate in a reciprocating manner when the stirring plate rotates every time, and the asphalt cannot be adhered to the stirring plate for a long time;

4. through using the stirring rod when stirring asphalt concrete, drive the flashboard and open for pitch branch in the pipeline adds many times, lets pitch can be better mix with the aggregate, and the distribution of pitch is more even.

Drawings

FIG. 1 is a side view of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a side view of the asphalt feed state of the present invention;

FIG. 4 is a side structural view showing a crushed state of the crushed stones according to the present invention;

FIG. 5 is an enlarged view of a portion of the area I of FIG. 1 in accordance with the present invention;

fig. 6 is a partial enlarged view of the area II in fig. 4 according to the present invention.

Detailed Description

Referring to fig. 1-6, in the asphalt concrete preparation process, a stirring tank 1 is arranged in a vertical direction, a stirring cavity is arranged at the lower end of the stirring tank 1, a discharge port 104 communicated with the stirring cavity 101 is arranged at the bottom of the stirring tank 1, a material cover 11 is arranged at the discharge port 104, a stone inlet 102 is arranged at the upper end of the stirring tank 1, and an asphalt inlet 103 is arranged on the side wall of the stirring tank 1 close to the lower end; a stone screening and crushing assembly is arranged at the lower end of a stone inlet 102 in the stirring box 1, a stirring assembly is arranged in a stirring cavity 101 of the stirring box 1, a switch assembly matched with the stirring assembly is arranged on the side wall of the stirring box 1 and used for controlling the opening and closing of an asphalt inlet 103, and a power assembly used for driving the stone screening and crushing assembly and the stirring assembly to work is arranged on the outer side of the stirring box 1; the preparation process of the asphalt concrete comprises the following steps:

s1, starting a power assembly, wherein the power assembly drives the stone screening and crushing assembly and the stirring assembly to work;

s2, throwing the broken stones from the stone inlet 102, screening the large broken stones and the small broken stones twice by the stone screening and crushing assembly to enable the small broken stones to fall into the stirring cavity 101, extruding and crushing the large broken stones, and adding the crushed stones into the stirring cavity 101;

s3, introducing asphalt into the asphalt inlet 103, controlling the switch assembly to open the asphalt inlet 103 once when the stirring plate 3 of the stirring assembly rotates for one circle, and enabling the asphalt to quantitatively enter the stirring cavity 101 to be uniformly mixed with crushed stone;

and S4, after the stirring is finished, placing a collecting vehicle at the discharge port 104, and then opening the material cover 11 to enable the stirred asphalt concrete to flow out to the collecting vehicle below.

The stone screening and crushing assembly comprises a rotary table 2a and a support 5, the rotary table 2a is rotatably connected to the rear side, a vertical notch 1f is formed in the rear side wall of the stirring box 1, a vertical sliding groove 1e is formed in the inner side of the front side wall of the stirring box, and the vertical notch 1f and the vertical sliding groove 1e are opposite to each other in the front-rear direction; the front end of support 5 stretches into in vertical spout 1e, the rear end stretches out the output spout and is equipped with back projection 5a, the eccentric position department of carousel 2a articulates there is first connecting rod 24, the other end of first connecting rod 24 is articulated with back projection 5a, drive support 5 up-and-down reciprocating motion through first connecting rod 24 when carousel 2a rotates.

A left boss 1c and a right boss 1d are arranged in the stirring box 1 side by side from left to right, a left inclined surface 1c1 inclined downwards to the right is arranged at the upper end of the left boss 1c, a right inclined surface 1d1 inclined downwards to the right is arranged at the upper end of the right boss 1d, and the left inclined surface 1c1 and the right inclined surface 1d1 are parallel to each other; a left inclined sieve plate 52 parallel to the left inclined plane 1c1 and a right inclined sieve plate 51 parallel to the right inclined plane 1d1 are fixedly arranged on the bracket 5 right below the stone inlet 102, and are arranged between the left boss 1c and the right boss 1 d; the right end of the left inclined sieve plate 52 is connected with the left side surface of the left boss 1c in a sliding manner, the right end of the right inclined sieve plate 51 is connected with the left side surface of the right boss 1d in a sliding manner, and the left end and the right side surface of the left boss 1c are in the same vertical plane; when the bracket 5 is at the lower end position, the left inclined surface 1c1 and the right inclined screen plate 51 are in the same inclined surface, and when the bracket 5 is at the upper end position, the left inclined surface 1c1 and the left inclined screen plate 52 are in the same inclined surface, and the right inclined surface 1d1 and the right inclined screen plate 51 are in the same inclined surface. The stirring box is characterized in that a crushing plate 7 is hinged above the right boss 1d in the stirring box 1, a left limiting groove 71 is arranged at the left end of the crushing plate 7, a sliding pin 53 extending into the left limiting groove 71 is arranged on the support 5, and the left end of the crushing plate 7 is driven to move up and down when the support 5 moves up and down.

The stirring assembly comprises a stirring plate 3, wherein a first convex column 3a rotatably connected in the stirring box 1 is arranged on the front side of the stirring plate 3, and a second convex column 3b extending out of the stirring box 1 is arranged on the rear side of the stirring plate 3. The stirring plate 3 is sleeved with a scraping ring 4, and the scraping ring 4 is connected to the stirring plate 3 in a sliding manner along the radial direction of the first convex column 3 a; inside wall is equipped with track groove 12 around agitator tank 1, the front and back both sides of scraping ring 4 are equipped with the third projection 41 that stretches into in track groove 12, and when stirring board 3 rotated, scraping ring 4 was followed the radial reciprocating sliding of first projection 3a on stirring board 3.

The switch assembly comprises a first spring 8, an upper notch 1b communicated with the asphalt inlet 103 is formed in the upper portion of the asphalt inlet 103 on the inner side of the left side wall of the stirring box 1, a lower chute 1a is formed in the lower portion of the asphalt inlet 103, a flashboard 6a is connected in the lower chute 1a in a sliding mode, when the flashboard 6a moves to the upper end position, the asphalt inlet 103 is opened, and when the flashboard 6a moves to the lower end position, the asphalt inlet 103 is closed; a right-extending shifting plate 61 is arranged on the right side of the upper end of the flashboard 6a, a blocking plate 6 which extends upwards to block the upper notch 1b is arranged on the shifting plate 61, and the first spring 8 is positioned in the upper notch 1b and used for forcing the flashboard 6a to move downwards; the shutter plate 6a is moved upward by the dial plate 61 when the agitating plate 3 rotates, and the shutter plate 6a is moved downward by the first spring 8 when the agitating plate 3 is disengaged from the dial plate 61.

The power component comprises a first motor 2, a mounting plate 1g is arranged on the rear side of the stirring box 1, the first motor 2 is fixedly mounted on the mounting plate 1g, an output shaft of the first motor 2 is fixedly connected with an output shaft of a second convex column 3b in a coaxial mode, a lower rotating wheel 21 is fixedly arranged on the output shaft of the first motor 2, an upper rotating wheel 23 is fixedly arranged on the rear end of the rotary table 2a in a coaxial mode, and a transmission belt 22 is arranged between the lower rotating wheel 21 and the upper rotating wheel 23.

In the above S1, when the power assembly works, the first motor 2 is started, because the first motor 2 is fixedly connected to the stirring box 1, the output shaft of the first motor 2 is fixedly connected to the lower rotating wheel 21, the lower rotating wheel 21 on one hand drives the stirring plate 3 to rotate in the stirring cavity 101 through the second protruding pillar 3b, on the other hand drives the upper rotating wheel 23 to rotate through the transmission belt 22, the upper rotating wheel 23 drives the rotating disc 2a to synchronously rotate, and the rotating disc 2a drives the support 5 to reciprocate up and down through the first connecting rod 24 and the rear protruding pillar 5a when rotating;

in the above S2, crushed stone is thrown in from the stone inlet 102 and falls on the left inclined sieve plate 52, the left inclined sieve plate 52 and the right inclined sieve plate 51 are driven to reciprocate up and down by the rotation of the lower runner 21, so that large crushed stone and small crushed stone are sieved twice in a stepped motion mode, the small crushed stone falls into the stirring cavity 101, the large crushed stone is conveyed to the right inclined surface 1d1 and below the crushing plate 7 under the action of the right inclined sieve plate 51, the right end of the crushing plate 7 is hinged to the stirring box 1, the sliding pin 53 on the bracket 5 slides in the left limiting groove 71 on the crushing plate 7, so that the bracket 5 drives the crushing plate 7 to move up and down to extrude and crush the large crushed stone, the large crushed stone is crushed into small crushed stone, and the crushed stone can slide into the stirring cavity 101 from a gap below the crushing plate 7, and the crushed stone can be completely used;

in the above S3, when the stirring plate 3 rotates to the position shown in fig. 3, the stirring plate 3 touches the paddle board 61 on the paddle board 6a, and the paddle board 6a is slidably connected to the stirring box 1, so that the stirring plate 3 rotates clockwise to open the asphalt inlet 103 by touching the paddle board 61 and overcoming the first spring 8, so that asphalt is fed from the asphalt inlet 103, and after the stirring plate 3 is separated from the paddle board 61, the paddle board 6a is closed under the action of the first spring 8, so that a certain amount of asphalt enters the stirring cavity 101 and is uniformly mixed with crushed stone every rotation of the stirring plate 3, so that the crushed stone and the asphalt can be mixed more uniformly; in addition, because scraper ring 4 and stirring board 3 sliding connection, third projection 41 slides in track groove 12 on scraper ring 4 for stirring board 3 is at rotatory in-process, and scraper ring 4 is moved to the other end by stirring board 3 one end, thereby scrapes pitch on stirring board 3, thereby clear festival stirring board 3.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.