CN103821063B - Equipment for preparing rubber asphalt based on ultrasonic method - Google Patents

Equipment for preparing rubber asphalt based on ultrasonic method Download PDF

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Publication number
CN103821063B
CN103821063B CN201410089388.7A CN201410089388A CN103821063B CN 103821063 B CN103821063 B CN 103821063B CN 201410089388 A CN201410089388 A CN 201410089388A CN 103821063 B CN103821063 B CN 103821063B
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ultrasonic
case
rubber asphalt
heating panel
preparing
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Expired - Fee Related
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CN201410089388.7A
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CN103821063A (en
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侯曙光
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Nanjing Tech University
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Nanjing Tech University
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Abstract

The invention relates to equipment for preparing rubber asphalt based on an ultrasonic method, which comprises a rubber powder conveyor, a matrix asphalt conveying pump and a preparation box, wherein a plurality of heating plates and a plurality of ultrasonic components are arranged in the preparation box from top to bottom; each ultrasonic assembly comprises an ultrasonic vibration plate, an ultrasonic vibration plate and an ultrasonic transducer, wherein the ultrasonic vibration plate and the ultrasonic transducer are arranged in parallel up and down, the ultrasonic transducer is connected between the two plates, the lower part of the ultrasonic transducer is connected with an ultrasonic emission plate, the upper end of the ultrasonic transducer is connected with the ultrasonic vibration plate through a bolt, and the ultrasonic transducer is connected with an ultrasonic power supply through a lead to form a circuit. The equipment has simple structure, low energy consumption and high heating speed. The asphalt and the rubber powder are uniformly mixed by ultrasonic high-frequency vibration, the reaction time is shortened, the asphalt and the rubber powder can react at a lower temperature, the aging of the matrix asphalt is effectively prevented, and the prepared rubber asphalt mixture is stable in property.

Description

A kind of equipment preparing rubber asphalt based on supercritical ultrasonics technology
Technical field
The present invention relates to a kind of preparation of ground surface material rubber asphalt material, particularly relate to a kind of equipment preparing rubber asphalt based on supercritical ultrasonics technology.
Background technology
Rubber asphalt is the novel pavement material that development in recent years is got up, it is mixed by a certain percentage by pitch and rubber powder, there is the performances such as high-temperature stability, low temperature flexibility, ageing resistance, fatigue resistance, water resistant damage property, be mainly used in the stress absorbing layer in road structure and surface course.Compared with traditional pitch, rubber asphalt can improve greatly the high-temperature stability on road surface, improves low-temperature cracking-resistance and the rutting resistance on road surface, extends the application life of road, reduce maintenance costs.Meanwhile, the application of rubber asphalt, a large amount of discarded junked tire can be made to be recycled utilization, is ideal environment-friendly type ground surface material.At present, rubber asphalt is the rubber powder pulverized by physics mode by junked tire protoplasm and obtain, combine in certain thickness grating ratio, then multiple high polymer modifier is added, under hot conditions (about 200 DEG C), through mixing arrangement and the abundant mix of multi-stage reacting kettle, fully molten swollen reaction about more than the 60min of rubber powder and matrix pitch could be formed, manufacturing process temperature is high, length consuming time, energy consumption is high, not only equipment more complicated be easy to aging, and in long swelling reaction, matrix pitch easily produces degradation and decomposition, BaP can be discharged, the pernicious gases such as glance coal, severe contamination is caused to environment, in addition, existing processing method is uniformly mixed only by shaft, rubber powder and pitch are difficult to reach and fully mix, and cause rubber powder skewness in pitch medium, cause the indexs such as the viscosity of rubber asphalt, softening point, ductility and needle penetration to be difficult to reach application requirement.
Summary of the invention
The invention provides a kind of equipment preparing rubber asphalt based on supercritical ultrasonics technology, solving conventional rubber pitch preparation facilities high energy consumption, stir the defects such as uneven, swelling time length, high pollution, guarantee rubber asphalt stable performance.
The equipment that the present invention prepares rubber asphalt comprises rubber powder conveyer, matrix pitch delivery pump and prepares case, described case upper end of preparing is provided with and exports the rubber powder charging aperture be connected and the matrix pitch charging aperture be connected with matrix pitch delivery pump outlet with rubber powder conveyer, prepares case lower end and is provided with rubber asphalt discharging opening; Described preparation in case is provided with multiple heating panel and multiple ultrasonic module from top to bottom; Described each ultrasonic module comprises the ultrasonic wave vibrating plate, ultrasonic wave expelling plate and the ultrasonic transducer that is connected between this two plate that be arranged in parallel up and down, the bottom of ultrasonic transducer connects ultrasonic wave expelling plate, upper end is connected with ultrasonic wave vibrating plate by bolt, and ultrasonic transducer is linked to be circuit by wire and ultrasonic power.
Preparing in case, described heating panel and ultrasonic module be distance arrangement at certain intervals from top to bottom, and wherein, in case, top and bottom are respectively provided with a heating panel, arrange a heating panel therebetween every 1 ~ 4 ultrasonic module.
Described heating panel and ultrasonic module are one end and are fixed on and prepare on tank wall face, the other end with unsettled under 5 ° ~ 10 ° angles,
Preparing in case, from top heating panel to the most next ultrasonic module, alternately be separately fixed at each other between adjacent each plate and prepare on two relative sidewalls of case, described ultrasonic module is fixed on one end of ultrasonic wave expelling plate to prepare on the corresponding wall of case.
Described heating panel contains cavity, is provided with heat conduction coiled pipe in cavity, and the two ends of coiled pipe are respectively the import of heat-conducting medium and the outlet of heat-conducting medium.
Described rubber powder conveyer is helical feed machinery.
The described rubber asphalt discharging opening preparing case is provided with bleeder valve.
The equipment that the present invention prepares rubber asphalt adopts ultrasonic module to substitute conventional hybrid device and multi-stage reacting kettle, ultrasonic transducer is utilized to carry out power conversion, high-frequency electrical energy is made to be converted into mechanical energy, the electrical power of input is converted to mechanical output (i.e. ultrasonic wave), being passed to by expelling plate and vibrating plate prepares in matrix pitch in case and rubber powder again, make the two fully mixture, stir, and ultrasonic transducer self consumes little power; And heat temperature raising speed is fast, the reaction time shortens (only needing 5-10min), compared with prior art, can reduce heating-up temperature by a relatively large margin.This device structure is simple, and energy consumption is low, and effectively can prevent aging under long-time HTHP of matrix pitch, solve tradition prepare in rubber asphalt technique stir uneven, swelling time long, the problem of unstable properties.
Accompanying drawing explanation
Fig. 1 is the example structure schematic diagram that the present invention prepares rubber asphalt device;
Fig. 2 is the structural representation of ultrasonic module;
Fig. 3 is the internal construction schematic diagram of heating panel.
In figure, 1-asphalt storage tank, 2-asphalt delivery pipe, 3-prepare case, 4-helical conveyor, 5-ultrasonic module, 5a-ultrasonic wave vibrating plate, 5b-ultrasonic wave expelling plate, 5c-ultrasonic transducer, 6,6-1,6-2-heating panel, 7,8-ultrasonic power, 9-rubber asphalt outlet valve, 10-asphalt delivery pump, 11-pitch delivery valve, 12-bolt, 13-heat conduction coiled pipe, 13a-heat-conducting medium import, 13b-heat-conducting medium outlet.
Detailed description of the invention
First by reference to the accompanying drawings present device is further illustrated below.
As Fig. 1, the rubber powder charging aperture preparing case 3 upper end is connected with helical conveyor 4, the asphalt delivery pipe 2 that matrix pitch charging aperture exports with matrix pitch delivery pump 10 is connected, the top of preparing case 3 is provided with a heating panel 6-1, bottom is provided with a heating panel 6-2, a heating panel 6 is set every two ultrasonic module 5 therebetween, from top to bottom distance arrangement at certain intervals.The structure of ultrasonic module 5 is as Fig. 2, it comprises the ultrasonic wave vibrating plate 5a, ultrasonic wave expelling plate 5b and the ultrasonic transducer 5c that be arranged in parallel up and down, the bottom of ultrasonic transducer 5c connects ultrasonic wave expelling plate 5b, upper end is connected with ultrasonic wave vibrating plate 5a by bolt 12, ultrasonic transducer 5c is linked to be circuit (see Fig. 1) by wire and ultrasonic power 7 or ultrasonic power 8, the tranmitting frequency of ultrasonic transducer 5c is 30KHz-50KHz, and power is 1k-2kw/m 3, in ultrasonic module 5, the quantity of ultrasonic transducer 5c and arrangement form thereof can be arranged as required.Continue to see Fig. 1, heating panel 6-1 and each ultrasonic module 5 and each heating panel 6 are one end and are fixed on and prepare on tank wall face, the other end with unsettled under 5 ° ~ 10 ° angles, each ultrasonic module 5 be with one end of ultrasonic wave expelling plate 5b be fixed on prepare case 3 wall on.From top heating panel 6-1 to a ultrasonic module 5 bottom, be alternately separately fixed at each other between adjacent each plate and prepare on two relative sidewalls of case 3.
Fig. 3 represents the structural representation of heating panel (comprising each heating panel 6 and heating panel 6-1,6-2).As Fig. 3, heating panel 6, containing cavity, is provided with the heat conduction coiled pipe 13 of continuous bend in cavity, the outlet 13b of to be the import 13a of heat-conducting medium and the other end be one end of heat conduction coiled pipe 13 heat-conducting medium.In the present embodiment, 3 heat-conducting mediums in heat conduction coiled pipe 1 are conduction oils.
The operating principle that the present invention is based on supercritical ultrasonics technology and prepare the equipment of rubber asphalt is described below in conjunction with accompanying drawing.
First start conduction oil to heat up and the circulating system, start ultrasonic power 7 and ultrasonic power 8, make each ultrasonic transducer 5c energising work, start helical conveyor 4 and asphalt delivery pump 10 subsequently.
Through mechanical crushing to certain particle size scope waste rubber powder by helical conveyor 4 input prepare case 3; Meanwhile, from the heated bitumen (about 150 DEG C) of asphalt storage tank 1 through pitch delivery valve 12, asphalt delivery pump 10, also inputted by asphalt delivery pipe 2 and prepare in case 3.Heated bitumen and rubber powder drop on simultaneously prepare case 3 the top heating panel 6-1 on flowed towards the low side of heating panel 6-1 along the plate tilted by heating mixing, drop to subsequently in the ultrasonic module 5 below it.Dither wave loops in matrix pitch and rubber powder, makes the two be thoroughly mixed, stirs by ultrasonic wave expelling plate 5b and ultrasonic wave vibrating plate 5a; Simultaneously compound to be fallen towards the low side flowing of heating panel 6-1 along the plate tilted in next ultrasonic module of being adjacent, dither occurs with keeping and mixes further; Same principle, is heated when mixture continues to fall on the next heating panel 6 that is adjacent.So, pitch and rubber powder mixture constantly automatically step by step tray flow downward, finally fall prepare case 3 bottom hot plate 6-2 on.In above flow process, heating panel can make material keep uniform temperature, and by ultrasonic wave dither, rubber powder is evenly distributed in matrix pitch, and matrix pitch and rubber powder can also be made fully swelling.Finally, the rubber asphalt product made exports from the rubber asphalt outlet valve 9 preparing case 3, enters in rubber asphalt storage device, can be directly used in pavement construction material.

Claims (8)

1. prepare the equipment of rubber asphalt based on supercritical ultrasonics technology for one kind, comprise rubber powder conveyer, matrix pitch delivery pump and prepare case, described case upper end of preparing is provided with and exports the rubber powder charging aperture be connected and the matrix pitch charging aperture be connected with matrix pitch delivery pump outlet with rubber powder conveyer, prepares case lower end and is provided with rubber asphalt discharging opening; It is characterized in that described preparation in case is provided with multiple heating panel and multiple ultrasonic module from top to bottom; Described each ultrasonic module comprises the ultrasonic wave vibrating plate, ultrasonic wave expelling plate and the ultrasonic transducer that is connected between this two plate that be arranged in parallel up and down, the bottom of ultrasonic transducer connects ultrasonic wave expelling plate, upper end is connected with ultrasonic wave vibrating plate by bolt, and ultrasonic transducer is linked to be circuit by wire and ultrasonic power.
2. the equipment preparing rubber asphalt based on supercritical ultrasonics technology according to claim 1, it is characterized in that preparing in case, described heating panel and ultrasonic module be distance arrangement at certain intervals from top to bottom, wherein, in case, top and bottom are respectively provided with a heating panel, arrange a heating panel therebetween every 1 ~ 4 ultrasonic module.
3. the equipment preparing rubber asphalt based on supercritical ultrasonics technology according to claim 2, is characterized in that describedly preparing in case, and heating panel and ultrasonic module are one end and are fixed on and prepare on tank wall face, and the other end is with unsettled under 5 ° ~ 10 ° angles; Described ultrasonic module is fixed on one end of ultrasonic wave expelling plate to prepare on the corresponding wall of case.
4. the equipment preparing rubber asphalt based on supercritical ultrasonics technology according to claim 3, it is characterized in that describedly preparing in case, from top heating panel to the most next ultrasonic module, be alternately separately fixed at each other between adjacent each plate and prepare on two relative sidewalls of case.
5. the equipment preparing rubber asphalt based on supercritical ultrasonics technology according to claim 4, is characterized in that described preparation in case arranges a heating panel every two ultrasonic module.
6. the equipment preparing rubber asphalt based on supercritical ultrasonics technology according to claim 5, is characterized in that described heating panel contains cavity, is provided with heat conduction coiled pipe in cavity, and the two ends of coiled pipe are respectively the import of heat-conducting medium and the outlet of heat-conducting medium.
7. the equipment preparing rubber asphalt based on supercritical ultrasonics technology according to claim 6, is characterized in that described rubber powder conveyer is helical feed machinery.
8. the equipment preparing rubber asphalt based on supercritical ultrasonics technology according to claim 7, is characterized in that the described rubber asphalt discharging opening preparing case is provided with bleeder valve.
CN201410089388.7A 2014-03-12 2014-03-12 Equipment for preparing rubber asphalt based on ultrasonic method Expired - Fee Related CN103821063B (en)

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CN103821063B true CN103821063B (en) 2016-03-23

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109371784B (en) * 2018-11-02 2021-11-16 哈尔滨工业大学 Asphalt mixture vibration mixing device and selection method of optimal vibration mixing parameters

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03257205A (en) * 1990-03-07 1991-11-15 Sato Doro Kk Manufacturing method for asphalt mixture
ES2023605A6 (en) * 1990-11-27 1992-01-16 Ruiz Tarragona Jose Manuel Process for modifying bitumens by means of additives
CN2263546Y (en) * 1996-03-08 1997-10-01 徐明东 Ultrasonic transducer
CN2782206Y (en) * 2005-04-29 2006-05-24 张燕珊 Ultrasonic stirrer
CN101091888A (en) * 2007-05-15 2007-12-26 刘廷国 Mixer for asphalt and rubber powder in equipment for producing rubber asphalt
CN201588163U (en) * 2010-01-26 2010-09-22 菏泽市公路管理局工程三处 Rubber asphalt producing device
CN202323630U (en) * 2011-10-26 2012-07-11 四川正中路面科技有限公司 Portable type movable and horizontal rubber asphalt production equipment
CN203096561U (en) * 2013-01-28 2013-07-31 甘肃路桥建设集团养护科技有限责任公司 Rubber powder and asphalt forcible pre-mixing device in rubber asphalt preparation process
CN203295928U (en) * 2013-06-07 2013-11-20 甘肃路桥建设集团养护科技有限责任公司 Equipment for producing rubber asphalt by thermal swelling method
CN203741676U (en) * 2014-03-12 2014-07-30 南京工业大学 Equipment for preparing rubber asphalt based on ultrasonic method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03257205A (en) * 1990-03-07 1991-11-15 Sato Doro Kk Manufacturing method for asphalt mixture
ES2023605A6 (en) * 1990-11-27 1992-01-16 Ruiz Tarragona Jose Manuel Process for modifying bitumens by means of additives
CN2263546Y (en) * 1996-03-08 1997-10-01 徐明东 Ultrasonic transducer
CN2782206Y (en) * 2005-04-29 2006-05-24 张燕珊 Ultrasonic stirrer
CN101091888A (en) * 2007-05-15 2007-12-26 刘廷国 Mixer for asphalt and rubber powder in equipment for producing rubber asphalt
CN201588163U (en) * 2010-01-26 2010-09-22 菏泽市公路管理局工程三处 Rubber asphalt producing device
CN202323630U (en) * 2011-10-26 2012-07-11 四川正中路面科技有限公司 Portable type movable and horizontal rubber asphalt production equipment
CN203096561U (en) * 2013-01-28 2013-07-31 甘肃路桥建设集团养护科技有限责任公司 Rubber powder and asphalt forcible pre-mixing device in rubber asphalt preparation process
CN203295928U (en) * 2013-06-07 2013-11-20 甘肃路桥建设集团养护科技有限责任公司 Equipment for producing rubber asphalt by thermal swelling method
CN203741676U (en) * 2014-03-12 2014-07-30 南京工业大学 Equipment for preparing rubber asphalt based on ultrasonic method

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