CN113754347A - Preparation method of asphalt concrete - Google Patents
Preparation method of asphalt concrete Download PDFInfo
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- CN113754347A CN113754347A CN202111047893.1A CN202111047893A CN113754347A CN 113754347 A CN113754347 A CN 113754347A CN 202111047893 A CN202111047893 A CN 202111047893A CN 113754347 A CN113754347 A CN 113754347A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a preparation method of asphalt concrete, which comprises the following steps: step S1, feeding: pouring aggregate for preparing asphalt concrete into a stirring barrel; step S2, stirring and adding asphalt: driving a stirring rod to rotate in the stirring barrel, and simultaneously gradually adding asphalt into the stirring barrel; step S3, blanking: pouring the asphalt concrete obtained by stirring in the step S2 out of the stirring barrel; the asphalt concrete preparation device comprises a stirring barrel and a stirring rod; the mixing barrel is provided with a feed inlet, a discharge outlet and a filling hole which can be controlled to be opened and closed; the feeding hole is used for pouring aggregate into the stirring barrel, the discharging hole is used for pouring asphalt concrete in the stirring barrel, and the pouring hole is used for adding asphalt into the stirring barrel; the stirring rod is located inside the stirring barrel and can rotate in a reciprocating mode inside the stirring barrel. By adopting the preparation method of the asphalt concrete, the aggregate and the asphalt can be more fully and uniformly mixed, and the preparation quality of the asphalt concrete is improved.
Description
Technical Field
The invention belongs to the technical field of asphalt concrete, and particularly relates to a preparation method of asphalt concrete.
Background
Asphalt concrete, commonly known as asphalt concrete, is a mixture prepared by manually selecting mineral aggregates having a certain gradation composition, such as crushed or crushed gravel, stone chips or sand and mineral powder, and then mixing with a certain proportion of road asphalt material under strictly controlled conditions.
However, the following problems exist in the existing production of asphalt concrete:
1. in the existing asphalt concrete preparation, in the stirring operation process of stirring asphalt and aggregate, the stirring direction and the stirring form are single, so that the asphalt and the concrete cannot be fully mixed, and the quality of the asphalt concrete is influenced;
2. in the existing preparation process of asphalt concrete, asphalt and aggregate are added all at one time, then mixing and stirring are carried out, and the distribution of the stirred asphalt is not uniform, so that the asphalt can not wrap each aggregate well, and the using effect of the asphalt concrete is influenced;
3. because the viscosity of the asphalt concrete is high, the asphalt concrete is difficult to pour out of the container after being prepared, so that the blanking efficiency is low, and a lot of asphalt concrete remains on the inner wall of the container, thereby causing waste.
Disclosure of Invention
Aiming at the problems in the existing asphalt concrete preparation process, the invention provides a preparation method of asphalt concrete.
In the preparation method of the asphalt concrete, the preparation of the asphalt concrete is carried out by adopting an asphalt concrete preparation device, and the preparation method specifically comprises the following steps:
step S1, feeding: pouring aggregate for preparing asphalt concrete into a stirring barrel;
step S2, stirring and adding asphalt: driving a stirring rod to rotate in the stirring barrel, and simultaneously gradually adding asphalt into the stirring barrel;
step S3, blanking: pouring the asphalt concrete obtained by stirring in the step S2 out of the stirring barrel;
the asphalt concrete preparation device comprises a stirring barrel and a stirring rod; the stirring barrel is provided with a feed inlet, a discharge outlet and a filling hole which can be controlled to be opened and closed; the feeding hole is used for pouring aggregate into the stirring barrel, the discharging hole is used for pouring asphalt concrete in the stirring barrel, and the pouring hole is used for adding asphalt into the stirring barrel; the stirring rod is positioned inside the stirring barrel and can rotate in a reciprocating mode inside the stirring barrel.
Preferably, the asphalt concrete preparation device further comprises a pouring rod; one end of the perfusion rod is positioned outside the stirring barrel, the other end of the perfusion rod extends into the stirring barrel, and the perfusion rod can reciprocate horizontally relative to the stirring barrel; the pouring hole is positioned on the pouring rod and is formed along the axial direction of the pouring rod, one end of the pouring hole is positioned outside the stirring barrel, and the other end of the pouring hole extends into the stirring barrel; the filling hole is selectively communicated with the stirring barrel along with the reciprocating movement of the filling rod along the horizontal direction.
Preferably, the asphalt concrete preparation device further comprises a control valve core and a control spring, the filling rod is coaxially and slidably connected with the stirring rod, and the filling hole comprises an axial hole and a radial hole; the control valve core is positioned in an axial hole in the pouring hole and can axially slide back and forth relative to the pouring rod, one end of the control valve core is provided with a radial connecting hole, and the other end of the control valve core extends out of the pouring rod and can be axially abutted against the stirring rod so as to move relative to the pouring rod to a position where the connecting hole is communicated with the radial hole; the control spring is positioned between the control valve core and the filling rod to drive the control valve core to move relative to the filling rod to a position where the connecting hole is disconnected from the radial hole.
Further preferably, the asphalt concrete preparing apparatus further includes a stirring blade, and the stirring blade is driven by the stirring rod to rotate inside the stirring barrel.
Further preferably, the perfusion rod and the stirring rod are inserted and connected in the axial direction to form synchronous rotation, the stirring blade and the stirring rod or the perfusion rod form tooth meshing connection in the horizontal direction, and the stirring blade and the perfusion rod or the stirring rod form axial synchronous moving connection.
Further preferably, the asphalt concrete preparation device comprises a plurality of stirring blades; the stirring blades are distributed along the circumferential direction of the stirring rod, all the stirring blades can move to the same vertical section in the stirring barrel along the horizontal direction, and all the stirring blades can simultaneously rotate to the same vertical section in the stirring barrel.
Further preferably, the asphalt concrete preparation device further comprises a pushing driver; the material pushing driver is arranged along the horizontal direction to drive the stirring blades to perform reciprocating movement in the horizontal direction in the stirring barrel.
Further preferably, the asphalt concrete preparation device further comprises a pouring motor and a link mechanism; the connecting rod mechanism consists of a connecting rod and a rotary table, the rotary table is connected with an output shaft of the perfusion motor, one end of the connecting rod is eccentrically and rotatably connected to the rotary table, and the other end of the connecting rod is connected with the perfusion rod; the perfusion motor drives the perfusion rod to perform reciprocating movement in the horizontal direction through the connecting rod mechanism.
Preferably, the asphalt concrete preparation device further comprises a stirring motor and a stirring gear set; the stirring motor is connected with the stirring rod through the stirring gear set so as to drive the stirring rod to rotate in a reciprocating manner in the stirring barrel.
Further preferably, the asphalt concrete preparation device further comprises a guide frame, the stirring gear set comprises an outer stirring gear and an inner stirring gear ring, and one end of the stirring rod, which is positioned outside the stirring barrel, is provided with a guide groove along the circumferential direction; the guide groove and the guide frame form relative rotation sliding connection, the stirring motor is fixedly connected with the stirring rod, the stirring inner gear ring is fixedly connected with the guide frame, and an output shaft of the stirring motor forms tooth meshing connection with the stirring inner gear ring through the stirring outer gear.
The preparation method of the asphalt concrete has the following beneficial technical effects:
1. in the preparation method of the asphalt concrete, the aggregates are added into the stirring barrel, and in the stirring process, the asphalt is gradually added into the stirring barrel for multiple times in an intermittent manner by virtue of the filling hole, so that the aggregates and the asphalt can be more fully and uniformly mixed, the asphalt can better and uniformly wrap each aggregate, the preparation quality of the asphalt concrete is improved, and the use effect of the asphalt concrete is improved.
2. In the preparation method of the asphalt concrete, the pouring motor simultaneously drives the stirring rod to rotate and the pouring rod performs reciprocating motion in the horizontal direction relative to the stirring rod, so that asphalt can be added for multiple times in the stirring process, the synchronous control of stirring and asphalt addition is realized, the control complexity is simplified, and the preparation efficiency of the asphalt concrete is improved.
3. According to the preparation method of the asphalt concrete, the stirring blades are arranged on the stirring rod and the pouring rod, and the stirring blades rotate in the rotating process along with the stirring rod, so that the stirring blades can form composite rotation in the stirring barrel, the stirring uniformity of the asphalt concrete is improved, and the preparation quality of the asphalt concrete is improved.
4. In the preparation method of the asphalt concrete, the plurality of stirring blades are respectively arranged on the stirring rod and the pouring rod, and in the process of relative movement of the stirring rod and the pouring rod in the horizontal direction, all the stirring blades can move to the same vertical section and can rotate to the same vertical section, so that the asphalt concrete can be subjected to scraping operation, the pouring effect of the asphalt concrete is improved, the residual quantity of the asphalt concrete in the stirring barrel is reduced, and the preparation efficiency of the asphalt concrete is improved.
Drawings
FIG. 1 is a schematic structural view of a concrete preparation apparatus in the method for preparing asphalt concrete according to the embodiment;
FIG. 2 is a schematic view of the concrete preparing apparatus of this embodiment along the direction A-A in FIG. 1;
FIG. 3 is a schematic structural view of the concrete preparing apparatus according to this embodiment during the mixing process;
FIG. 4 is an enlarged view of a portion of the structure at I in FIG. 3;
fig. 5 is an enlarged view of a portion of the structure at II in fig. 3.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
In the method for preparing asphalt concrete of this embodiment, the preparing of asphalt concrete by using the asphalt concrete preparing apparatus specifically includes the following steps:
and step S1, loading. And pouring the aggregate required for preparing the asphalt concrete into the stirring barrel according to the type and proportion relation.
Step S2, stirring and adding pitch. And driving the stirring rod to rotate in the stirring barrel to stir the added aggregate, and simultaneously gradually adding the asphalt into the stirring barrel.
And step S3, blanking. Pouring the asphalt concrete obtained by stirring in the step S2 out of the stirring barrel.
Referring to fig. 1 to 5, the asphalt concrete preparing apparatus of the present embodiment includes a mixing tank 1 and a mixing rod 2. Wherein, agitator 1 level is fixed on support 3 to be equipped with feed inlet 11, discharge gate 12 and the hole of pouring 13 that can open and close control on agitator 1. Wherein, the feed inlet 11 is located at the highest position of the stirring barrel 1 and is used for pouring aggregate into the stirring barrel 1. The discharge port 12 is located at the lowest position of the mixing tank 1 and is used for pouring out the asphalt concrete in the mixing tank 1. The pouring hole 13 extends from the outside of the stirring barrel 1 to the inside of the stirring barrel 1, and is used for adding asphalt into the stirring barrel 1 for multiple times in an intermittent manner. The stirring rod 2 extends into the stirring barrel 1 along the horizontal direction, and can rotate in a reciprocating manner inside the stirring barrel 1, so that aggregate and asphalt in the stirring barrel 1 are mixed and stirred, and asphalt concrete is obtained.
In the preparation method of the asphalt concrete of the embodiment, the aggregates are added into the stirring barrel firstly, and in the stirring process, the pouring hole is used for gradually adding the asphalt into the stirring barrel for multiple times in an intermittent mode, so that the aggregates and the asphalt can be mixed more fully and uniformly, the asphalt can better uniformly wrap each aggregate, the preparation quality of the asphalt concrete is improved, and the using effect of the asphalt concrete is improved.
Referring to fig. 1 to 5, a pouring rod 4 is provided in the asphalt concrete preparing apparatus according to the present embodiment. One end of the pouring rod 4 is located outside the stirring barrel 1, and the other end extends to the inside of the stirring barrel 1, and the pouring rod 4 can perform horizontal direction reciprocating movement relative to the stirring barrel 1. Fill hole 13 and be located filling rod 4 and set up along its axial, one end is located the outside of agitator 1, and the other end extends to the inside of agitator 1 to fill hole 13 along filling rod 4 can form the selection intercommunication with agitator 1 along the reciprocating motion of horizontal direction.
Therefore, the operation of repeatedly adding asphalt into the stirring barrel for multiple times is achieved by communicating one end, positioned outside the stirring barrel, in the filling hole with the external asphalt and then by means of the reciprocating movement of the filling rod relative to the stirring barrel along the horizontal direction.
Further, in the asphalt concrete preparing apparatus of this embodiment, a control valve core 5 and a control spring 6 are further provided, and the pouring rod 4 is in coaxial sliding connection with the stirring rod 2. The pouring hole 13 comprises an axial hole 131 and a radial hole 132, wherein the axial hole 131 is communicated with the circumscribed asphalt, and the radial hole 132 is communicated with the inside of the stirring barrel 1.
The control valve spool 5 is located inside an axial bore 131 in the pouring bore 13 and is axially reciprocable relative to the pouring wand 4 within the axial bore 131. One end of the control valve core 5 extends out between the pouring rod 4 and the stirring rod 2, and can be in contact with the stirring rod 2 along with the relative horizontal sliding between the pouring rod 4 and the stirring rod 2, so as to move in the horizontal direction relative to the pouring rod 4; one end of the control valve spool 5 is provided with a connecting hole 51 in the radial direction, which enables communication between the axial hole 131 and the radial hole 132. The control spring 6 is located in the axial bore 131 between the control valve spool 5 and the filler rod 4 to drive the control valve spool 5 to move relative to the filler rod 4 to a position where the connection bore 51 disconnects the radial bore 132 from the axial bore 131.
At the moment, the filling rod and the stirring rod are in sliding connection in the horizontal direction, and the control valve core and the control spring are arranged at the position where the filling rod and the stirring rod are in sliding connection; on the contrary, when the filling rod and the stirring rod move in opposite directions in the horizontal direction to enable the control valve core to be separated from the stirring rod, the control valve core is kept at the end part of the axial hole under the action of the control spring, so that the connecting hole and the radial hole are in staggered positions to cut off the communication relation between the axial hole and the radial hole, and further the filling hole is cut off to introduce asphalt into the stirring barrel. Therefore, under the mutual cooperation of the control valve core and the control spring, the control operation of introducing asphalt into the stirring barrel one by one in an intermittent mode can be realized by controlling the reciprocating movement between the filling rod and the stirring rod along the horizontal direction.
Of course, in other embodiments, according to different design and use conditions, the on-off relationship between the filling hole and the stirring barrel may also be controlled by using the method, for example, the end of the filling hole that is in communication with the stirring barrel is set near the position where the filling rod and the stirring barrel form sliding connection, that is, the radial hole in the filling hole is set near the barrel wall of the stirring barrel, so that during the horizontal reciprocating movement of the filling rod, the on-off of the radial hole and the stirring barrel is controlled by the barrel wall, thereby achieving the control of gradually introducing asphalt into the stirring barrel.
Further, as shown in fig. 1 to 5, in the asphalt concrete preparing apparatus of the present embodiment, a stirring blade 7 is further provided, and the stirring blade 7 is driven by the stirring rod 2 to rotate back and forth inside the stirring barrel 1, so that the stirring effect on the aggregate and the asphalt is improved by the stirring blade 7, and the preparation quality of the asphalt concrete is improved.
In the present embodiment, as shown in fig. 2, six stirring blades 7 are provided, and the pouring rod 4 and the stirring rod 2 form a synchronous rotation connection while forming an axial insertion connection through a hexagonal structure, that is, the pouring rod 4 and the stirring rod 2 can perform axial relative movement during the synchronous rotation. Meanwhile, three first racks 41 are arranged at intervals on the pouring rod 4, three second racks 21 are arranged at intervals on the stirring rod 2, and a gear 71 is arranged on each stirring blade 7. Three stirring blades 7 penetrate through the perfusion rod 4 along the radial direction of the stirring barrel 1 and are in tooth meshing connection with three second racks 21 of the stirring rod 2 along the horizontal direction respectively, and the other three stirring blades 7 penetrate through the stirring rod 2 along the radial direction of the stirring barrel 1 and are in tooth meshing connection with three first racks 41 of the perfusion rod 4 along the horizontal direction respectively.
At this moment, at the stirring rod pivoted in-process, just can drive the filling rod in step and rotate, and then drive six stirring leafs and carry out synchronous rotation in the agitator, and form the relative reciprocating motion's of axial in-process between stirring rod and filling rod, just can drive six stirring leafs with the help of first rack and second rack and carry out the rotation respectively to form the compound rotation of stirring leaf in the agitator, carry out the rotation along with the stirring rod pivoted in promptly, further improve the stirring effect to aggregate and pitch, promote the preparation quality to asphalt concrete.
Further, in the present embodiment, six stirring blades 7 are sequentially arranged in the circumferential direction of the stirring rod 2, and the six stirring blades 7 can be located at the same vertical section with the relative movement between the stirring rod 2 and the pouring rod 4 in the axial direction, and can rotate into the same vertical section.
At this moment, after the completion is prepared the stirring of asphalt concrete, when pouring asphalt concrete by the discharge gate, through removing six stirring vanes to same vertical cross section department and make six stirring vane rotations in to same vertical cross section, just can be again through carrying out whole horizontal direction's reciprocating motion to the stirring rod and pouring rod, form the operation of scraping of horizontal direction with the help of the stirring vane to the inside asphalt concrete of agitator to accelerate the discharge velocity to asphalt concrete, improve the discharge effect to asphalt concrete.
In the embodiment, three stirring blades are respectively arranged on the stirring rod and the pouring rod, and the central angle of each stirring blade is 60 degrees. Like this, when the stirring rod with fill the stick along axial relative movement to the stirring leaf when being in different cross sections departments, can increase the stirring coverage of stirring leaf in the agitator to improve the stirring effect to asphalt concrete, and when the stirring rod with fill the stick along axial relative movement to six stirring leaves when being in different cross sections departments, can constitute a circle of accomplishing by six stirring leaves again, thereby improve the effect of cleaing away of remaining asphalt concrete to whole agitator inner wall. Of course, in other embodiments, if only the mixing effect of the mixing blades on the asphalt concrete is considered, all the mixing blades can be arranged on the mixing rod or the pouring rod and arranged in sequence in the horizontal direction, so that the mixing effect on the asphalt concrete can be improved.
Referring to fig. 1 to 5, the asphalt concrete preparing apparatus of this embodiment further includes a pushing actuator 8. The material pushing driver 8 is arranged along the horizontal direction and is connected with one end, positioned outside the stirring barrel 1, of the stirring rod 2, so that the stirring rod 2 is driven to move in a reciprocating mode in the horizontal direction in the stirring barrel 1, the stirring blade 7 is driven to move in a reciprocating mode in the horizontal direction in the stirring barrel 1, and accordingly pushing and scraping operation of asphalt concrete in the stirring barrel 1 is achieved.
Wherein, in this embodiment, push away the material driver and adopt pole structural style, in other embodiments of course, according to the difference of design with the use operating mode, also can choose for use the cylinder that has bigger output power or even pneumatic cylinder to guarantee to the stable drive of stirring rod, guarantee to the effect of scraping of pushing away of interior asphalt concrete of agitator.
Referring to fig. 1 to 5, the asphalt concrete preparing apparatus of the present embodiment further includes a pouring motor 91 and a link mechanism 92. Wherein, link mechanism 92 comprises connecting rod 921 and carousel 922, and carousel 922 and the output shaft of filling motor 91 are connected, and the eccentric rotation of one end of connecting rod 921 is connected on carousel 922, and the other end forms the connection along the horizontal direction with filling rod 4. At the moment, the pouring rod can be driven to reciprocate horizontally by controlling the rotation of the pouring motor and the link mechanism, so that the driving control of the pouring rod to reciprocate horizontally is realized.
In this embodiment, the filling rod penetrates through the stirring barrel in the horizontal direction, one end of the filling rod is provided with a filling hole for introducing asphalt, the other end of the filling rod penetrates through the stirring rod and then is connected with the filling motor, and the filling motor is directly fixed on the stirring rod. Therefore, the driving control of the filling motor to the filling rod directly realizes the relative movement between the filling rod and the stirring rod along the horizontal direction. Of course, in other embodiments, the pouring motor may be fixed to the stirring barrel, and then the pouring motor and the pouring rod are connected in a relative sliding manner along the circumferential direction, so as to realize the driving control of the pouring rod moving to and fro along the horizontal direction during the rotation process relative to the stirring barrel.
Referring to fig. 1 to 5, in the asphalt concrete preparing apparatus of this embodiment, a ring-shaped guide frame 31 is provided on the support 3, and a circumferential guide groove is provided at an end of the stirring rod 2 located outside the stirring barrel 1, and the guide groove is rotatably connected to the guide frame in the circumferential direction. Meanwhile, a stirring gear set is arranged between the guide frame 31 and the pouring motor 91, wherein the stirring gear set is composed of a stirring inner gear ring 101 and a stirring outer gear 102, the stirring inner gear ring 101 is fixed on the guide frame 31, the stirring outer gear 102 is fixedly connected with an output shaft of the pouring motor 91, and the stirring outer gear 102 and the stirring inner gear ring 101 form tooth meshing connection.
At this moment, carry out reciprocating rotation through the drive filling motor, under the guide effect between leading truck and guide way, just can carry out reciprocating rotation for the agitator through stirring gear set drive stirring rod to the realization is to the drive control of stirring rod.
Wherein, in this embodiment, the double-shaft motor is chooseed for use to the filling motor, and one end and stirring gear train connection, the other end passes through driving belt and link mechanism and forms to be connected, thereby carry out synchro control as agitator motor to the rotation of stirring rod simultaneously by the filling motor, realize to stirring rod and filling rod synchro rotation's control and to filling rod for the control of stirring rod for axial reciprocating motion, improve this asphalt concrete preparation facilities's control integration greatly.
Meanwhile, the guide frame and the support are in sliding connection along the horizontal direction, so that the pushing driver can be connected with the guide frame along the horizontal direction, and reciprocating driving control of the stirring rod along the horizontal direction is realized by reciprocating driving of the guide frame along the horizontal direction.
Of course, in other embodiments, according to the difference of design and use conditions, a stirring motor may be separately provided to independently control the stirring rod, and at this time, by performing the associated control on the stirring motor and the pouring motor, it is also possible to achieve the driving control of the pouring rod to perform the reciprocating linear movement in the horizontal direction with respect to the stirring rod during the rotation control of the stirring rod and the pouring rod, thereby obtaining the gradual and multiple introduction effect of the asphalt during the stirring process.
Referring to fig. 1 and 3, a collecting bin 14 is further provided in the asphalt concrete preparing apparatus of this embodiment. Collect 14 below positions that are located discharge gate 12 in the storehouse for carry out the temporary storage of collecting to the asphalt concrete who pours out through discharge gate 12, so that get rid of asphalt concrete's in the agitator 1 fast, guarantee that the agitator carries out follow-up asphalt concrete's preparation operation fast, improve the preparation efficiency to asphalt concrete.
Further, a feed port door panel 151 and a discharge port door panel 152 are provided at the feed port 11 and the discharge port 12 of the present embodiment, respectively, and reciprocating movement control with respect to the horizontal direction of the agitation tank 1 is performed by means of a feed port pole 171 and a discharge port pole 172, respectively. Like this, through the drive control to the door plant pole, just can control the opening and closing control of feed inlet and discharge gate. In this embodiment, in order to accelerate the pouring speed of the asphalt concrete, two discharge ports 12 are provided on the mixing tank 1, and thus the discharge port electric pole 172 for controlling the discharge port door panel 152 is provided in the vertical direction, and is connected to the two discharge port door panels 152 by means of the two auxiliary connecting rods 18, so that the two discharge port door panels 152 can be simultaneously controlled to reciprocate relative to the mixing tank 1.
With reference to fig. 1 to 5, the apparatus for preparing asphalt concrete according to the present embodiment is used to prepare asphalt concrete, and specifically includes the following steps:
and step S1, loading.
First, the feed port electric pole 171 is controlled to move the feed port door panel 151 in the horizontal direction, so as to open the feed port 11. Then, the aggregate required for preparing the asphalt concrete is poured into the mixing tank 1 according to the type and proportion relation. Then, the feed port electric pole 171 is controlled again to drive the feed port door panel 151 to perform horizontal reverse movement, so as to close the feed port 11.
Step S2, stirring and adding pitch.
The pouring motor 91 is started, on one hand, the stirring rod 2 is driven to rotate relative to the stirring barrel 1 through the stirring gear set, and the pouring rod 4 and the six stirring blades 7 are driven to synchronously rotate in the stirring barrel 1 to stir the aggregate, on the other hand, the pouring rod 4 is driven to horizontally reciprocate relative to the stirring rod 2 through the link mechanism 92, when the pouring rod 4 moves leftwards relative to the stirring rod 2 to the position shown in figure 1, the control valve core 5 is abutted against the stirring rod 2 so as to overcome the control spring 6 and move relative to the pouring rod 4 to the position for communicating the axial hole 131 with the radial hole 132, so that the asphalt enters the inner part of the stirring barrel 1 through the pouring hole 13, when the pouring rod 4 moves rightwards relative to the stirring rod 2 to the position shown in figure 3, the control valve core 5 loses contact with the stirring rod 2 so as to move relative to the pouring rod 4 to the position for disconnecting the axial hole 131 from the radial hole 132 under the action of the control spring 6, thereby stopping the introduction of the asphalt into the inside of the agitating barrel 1 through the pouring hole 13, thereby achieving the successive introduction of the asphalt into the agitating barrel 1 in an intermittent manner. Meanwhile, the pouring rod 4 moves in a reciprocating manner in the horizontal direction relative to the stirring rod 2, so that the stirring blades 7 move in the stirring barrel 1 in a reciprocating manner in the horizontal direction, and the stirring blades 7 rotate synchronously through the engagement of the gear and the rack, thereby realizing the composite rotation of the stirring blades 7 in the stirring barrel 1, and performing more uniform contact mixing and stirring on the aggregate and the asphalt.
And step S3, blanking.
After the mixing preparation of the asphalt concrete in step S2 is completed, first, the pouring motor 91 is controlled to rotate so that the six mixing blades 7 move to and rotate into the same vertical section, as shown in fig. 1, and then the rotation of the pouring motor 91 is stopped. Then, the discharge port electric pole 172 is controlled to extend, so that the two discharge port door panels 152 are driven by the auxiliary connecting rod 18 to move horizontally relative to the stirring barrel 1, and the two discharge ports 12 are opened, so that the asphalt concrete in the stirring barrel 1 is poured into the collection bin 14 through the discharge ports 12. Meanwhile, the material pushing driver 8 is started, the stirring rod 2 is driven to reciprocate in the horizontal direction through the guide frame 31, so that the six stirring blades 7 in the same vertical section are driven to reciprocate in the horizontal direction, the pushing and scraping operation on the asphalt concrete in the stirring barrel 1 is formed, the pouring speed of the asphalt concrete is increased, and the residual quantity of the asphalt concrete in the stirring barrel 1 is reduced. Finally, after pouring out the inside asphalt concrete of agitator 1, just can the reverse control discharge gate pole 172 retrieve the action to drive two discharge gate door plants 152 and carry out reverse horizontal direction for agitator 1 and remove, reclose two discharge gates 12, accomplish the preparation operation to asphalt concrete.
Claims (10)
1. The preparation method of the asphalt concrete is characterized in that an asphalt concrete preparation device is adopted to prepare the asphalt concrete, and the preparation method specifically comprises the following steps:
step S1, feeding: pouring aggregate for preparing asphalt concrete into a stirring barrel;
step S2, stirring and adding asphalt: driving a stirring rod to rotate in the stirring barrel, and simultaneously gradually adding asphalt into the stirring barrel;
step S3, blanking: pouring the asphalt concrete obtained by stirring in the step S2 out of the stirring barrel;
the asphalt concrete preparation device comprises a stirring barrel and a stirring rod; the stirring barrel is provided with a feed inlet, a discharge outlet and a filling hole which can be controlled to be opened and closed; the feeding hole is used for pouring aggregate into the stirring barrel, the discharging hole is used for pouring asphalt concrete in the stirring barrel, and the pouring hole is used for adding asphalt into the stirring barrel; the stirring rod is positioned inside the stirring barrel and can rotate in a reciprocating mode inside the stirring barrel.
2. The method for preparing asphalt concrete according to claim 1, wherein the asphalt concrete preparing apparatus further comprises a pouring bar; one end of the perfusion rod is positioned outside the stirring barrel, the other end of the perfusion rod extends into the stirring barrel, and the perfusion rod can reciprocate horizontally relative to the stirring barrel; the pouring hole is positioned on the pouring rod and is formed along the axial direction of the pouring rod, one end of the pouring hole is positioned outside the stirring barrel, and the other end of the pouring hole extends into the stirring barrel; the filling hole is selectively communicated with the stirring barrel along with the reciprocating movement of the filling rod along the horizontal direction.
3. The method for preparing asphalt concrete according to claim 2, wherein the asphalt concrete preparing device further comprises a control valve core and a control spring, the pouring rod is coaxially and slidably connected with the stirring rod, and the pouring hole comprises an axial hole and a radial hole; the control valve core is positioned in an axial hole in the pouring hole and can axially slide back and forth relative to the pouring rod, one end of the control valve core is provided with a radial connecting hole, and the other end of the control valve core extends out of the pouring rod and can be axially abutted against the stirring rod so as to move relative to the pouring rod to a position where the connecting hole is communicated with the radial hole; the control spring is positioned between the control valve core and the filling rod to drive the control valve core to move relative to the filling rod to a position where the connecting hole is disconnected from the radial hole.
4. The method for producing asphalt concrete according to claim 3, wherein the asphalt concrete producing apparatus further comprises a stirring blade, and the stirring blade is driven by the stirring rod to rotate inside the stirring barrel.
5. The method for preparing asphalt concrete according to claim 4, wherein the pouring bar and the stirring bar are inserted and connected in an axial direction to form synchronous rotation, the stirring blade is engaged and connected with the stirring bar or the pouring bar by teeth in a horizontal direction, and the stirring blade is connected with the pouring bar or the stirring bar in an axial synchronous movement.
6. The method for producing asphalt concrete according to claim 5, wherein said asphalt concrete producing apparatus comprises a plurality of said stirring vanes; the stirring blades are distributed along the circumferential direction of the stirring rod, all the stirring blades can move to the same vertical section in the stirring barrel along the horizontal direction, and all the stirring blades can simultaneously rotate to the same vertical section in the stirring barrel.
7. The method for preparing asphalt concrete according to claim 6, wherein the asphalt concrete preparing apparatus further comprises a pusher driver; the material pushing driver is arranged along the horizontal direction to drive the stirring blades to perform reciprocating movement in the horizontal direction in the stirring barrel.
8. The method for preparing asphalt concrete according to claim 2, wherein the asphalt concrete preparing apparatus further comprises a pouring motor and a link mechanism; the connecting rod mechanism consists of a connecting rod and a rotary table, the rotary table is connected with an output shaft of the perfusion motor, one end of the connecting rod is eccentrically and rotatably connected to the rotary table, and the other end of the connecting rod is connected with the perfusion rod; the perfusion motor drives the perfusion rod to perform reciprocating movement in the horizontal direction through the connecting rod mechanism.
9. The method for preparing asphalt concrete according to any one of claims 1 to 8, wherein the asphalt concrete preparing apparatus further comprises a stirring motor and a stirring gear set; the stirring motor is connected with the stirring rod through the stirring gear set so as to drive the stirring rod to rotate in a reciprocating manner in the stirring barrel.
10. The method for preparing asphalt concrete according to claim 9, wherein the asphalt concrete preparing apparatus further comprises a guide frame, the stirring gear set comprises an outer stirring gear and an inner stirring gear, and one end of the stirring rod, which is positioned outside the stirring barrel, is provided with a guide groove along the circumferential direction; the guide groove and the guide frame form relative rotation sliding connection, the stirring motor is fixedly connected with the stirring rod, the stirring inner gear ring is fixedly connected with the guide frame, and an output shaft of the stirring motor forms tooth meshing connection with the stirring inner gear ring through the stirring outer gear.
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|---|---|---|---|---|
| US4387996A (en) * | 1980-04-14 | 1983-06-14 | Mendenhall Robert Lamar | Batch method of recycling asphaltic concrete |
| CN101332639A (en) * | 2007-06-28 | 2008-12-31 | 中铁十七局集团有限公司 | Movable asphalt cement mortar blending device |
| CN206941344U (en) * | 2017-07-04 | 2018-01-30 | 滁州高仁建设工程有限公司 | Bituminous mixing plant a mixing bowl |
| CN110029556A (en) * | 2019-05-15 | 2019-07-19 | 成都广维重工科技有限公司 | A kind of sandstone self-control intermittent asphalt concrete mixing plant |
| CN111300646A (en) * | 2020-02-29 | 2020-06-19 | 赵慧楠 | Preparation method of asphalt concrete |
| CN212611811U (en) * | 2020-06-18 | 2021-02-26 | 李秀锋 | Improvement type pitch mixing arrangement is used in bituminous paving construction |
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2021
- 2021-09-08 CN CN202111047893.1A patent/CN113754347B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387996A (en) * | 1980-04-14 | 1983-06-14 | Mendenhall Robert Lamar | Batch method of recycling asphaltic concrete |
| CN101332639A (en) * | 2007-06-28 | 2008-12-31 | 中铁十七局集团有限公司 | Movable asphalt cement mortar blending device |
| CN206941344U (en) * | 2017-07-04 | 2018-01-30 | 滁州高仁建设工程有限公司 | Bituminous mixing plant a mixing bowl |
| CN110029556A (en) * | 2019-05-15 | 2019-07-19 | 成都广维重工科技有限公司 | A kind of sandstone self-control intermittent asphalt concrete mixing plant |
| CN111300646A (en) * | 2020-02-29 | 2020-06-19 | 赵慧楠 | Preparation method of asphalt concrete |
| CN212611811U (en) * | 2020-06-18 | 2021-02-26 | 李秀锋 | Improvement type pitch mixing arrangement is used in bituminous paving construction |
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Effective date of registration: 20220720 Address after: 101200 No.22, zone 0, Binhe Industrial Zone, Pinggu District, Beijing Applicant after: Beijing xinjiangfeng asphalt products Co.,Ltd. Address before: 523000 Xinghua Industrial Park, GuanChang Road, Dongcheng District, Dongguan City, Guangdong Province Applicant before: Wang Xiudong |
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