CN111253963A - Multifunctional nanometer modified asphalt preparation instrument - Google Patents
Multifunctional nanometer modified asphalt preparation instrument Download PDFInfo
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- CN111253963A CN111253963A CN202010066219.7A CN202010066219A CN111253963A CN 111253963 A CN111253963 A CN 111253963A CN 202010066219 A CN202010066219 A CN 202010066219A CN 111253963 A CN111253963 A CN 111253963A
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/02—Working-up pitch, asphalt, bitumen by chemical means reaction
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Abstract
The invention provides a multifunctional nanometer modified asphalt preparation instrument which is characterized by comprising a shell, wherein a central control system, a material synthesis system, a drying system, a transmission system and a shearing system are arranged in the shell, wherein the central control system is respectively connected with the material synthesis system, the drying system, the transmission system and the shearing system; the material synthesis system is used for modifying and dispersing the surface function of the nano material; the discharge hole of the material synthesis system is connected with the feed inlet of the drying system; the discharge hole of the drying system is connected with the feed inlet of the shearing system; the drying system and the shearing system realize the transfer of materials through a transmission system; the surface functionalized nano modified asphalt preparation integrated device is realized, the surface treatment of the material and the modification and shearing of the asphalt are effectively combined, the temperature, the mixing amount and the environment of the nano material in the asphalt mixing process are accurately controlled, and the influence of uncertain factors on the experimental result is eliminated.
Description
Technical Field
The invention belongs to the technical field of road engineering, and particularly relates to a multifunctional nanometer modified asphalt preparation instrument
Background
In recent years, the development and application of nano materials are rapidly developed, the nano materials are compounded with asphalt materials, the structural characteristics of the asphalt can be changed on a nano scale, and researchers propose a method for improving the road performance of the asphalt materials by adopting a nano modifier, and remarkable effect is achieved. However, due to the large specific surface area and the large number of inorganic particles, the nano materials are often agglomerated and adsorbed in asphalt and have poor compatibility with asphalt, and in order to solve the problem, the modification of the surfaces of the nano particles by adopting chemical functions is one of the commonly used measures, and the preparation method is often limited by the optimal heating time of the asphalt, and the preparation conditions are severe, the material consumption in the preparation process is complex, and various instruments are needed, so that the preparation operation of the nano modified asphalt is influenced, and the variability of the materials cannot be avoided to a certain extent.
Disclosure of Invention
The invention aims to provide a multifunctional nanometer modified asphalt preparation instrument, which solves the defects in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a multifunctional nanometer modified asphalt preparation instrument which is characterized by comprising a shell, wherein a central control system, a material synthesis system, a drying system, a transmission system and a shearing system are arranged in the shell, wherein the central control system is respectively connected with the material synthesis system, the drying system, the transmission system and the shearing system; the material synthesis system is used for modifying and dispersing the surface function of the nano material; the discharge hole of the material synthesis system is connected with the feed inlet of the drying system; the discharge hole of the drying system is connected with the feed inlet of the shearing system; the drying system and the shearing system realize the transfer of materials through a transmission system;
the material synthesis system comprises a reaction layer, a dispersion layer and a centrifugal layer, wherein the reaction layer is used for modifying and dispersing the surface function of the nano material; the discharge hole of the reaction layer is connected with a dispersion layer, and the dispersion layer is used for dispersing materials; the discharge hole of the dispersion layer is connected with the centrifugal layer; the centrifugal layer is used for realizing the centrifugation of the functionalized nano material; and a discharge hole of the centrifugal layer is connected with a drying system.
Preferably, the reaction layer comprises a first acid liquid containing cylinder, a second acid liquid containing cylinder, a first particle sample containing cylinder, a second particle sample containing cylinder, a first weighing cylinder, a second weighing cylinder, a solution reaction kettle and a spray head, wherein the first acid liquid containing cylinder, the second acid liquid containing cylinder, the first particle sample containing cylinder, the second particle sample containing cylinder, the first weighing cylinder and the second weighing cylinder are all connected with a feed inlet of the solution reaction kettle; a first discharge hole is formed in the solution reaction kettle; is connected with the dispersion layer through a first discharge hole;
a solution metering pump is arranged between the first acid liquid containing cylinder and the solution reaction kettle;
a plunger metering pump is arranged between the first particle sample containing cylinder and the solution reaction kettle and between the second particle sample containing cylinder and the feed inlet of the solution reaction kettle;
and the feed inlets and the discharge outlets of the solution metering pump and the plunger metering pump are respectively provided with a one-way valve.
Preferably, the dispersion layer comprises a dispersion tank and an electromagnetic coil, wherein the electromagnetic coil is arranged on the outer side wall of the solution reaction kettle and arranged along the circumferential direction of the solution reaction kettle;
the dispersion tank is arranged below the solution reaction kettle; an ultrasonic dispersion system is placed in the dispersion tank and connected with a central control system.
Preferably, the centrifugal layer comprises a high-speed centrifuge, a first motor, a primary microfiltration membrane, a secondary microfiltration membrane and a material placing disc, wherein a driving motor of the high-speed centrifuge is connected with a central control system; the secondary microfiltration membrane and the primary microfiltration membrane are both of disc structures, and the end surfaces of the secondary microfiltration membrane and the primary microfiltration membrane are provided with circular grooves;
the microfiltration membrane is placed in the groove of the secondary microfiltration membrane; the material placing disc is placed in a groove of the primary microfiltration membrane;
the secondary microfiltration membrane is placed in a high-speed centrifuge;
the lower end of the material placing disc is connected with a first motor; the first motor is connected with the central control system.
Preferably, a cooling device is arranged between the discharge hole of the reaction layer and the feed hole of the dispersion layer.
Preferably, the drying system comprises an oven body, a vacuum pumping system, a supporting plate and a sample container, wherein the supporting plate is arranged in the middle of an inner cavity of the oven body, a sliding rail is arranged on the supporting plate, the sample container is arranged on the sliding rail, a rotor is arranged in the sample container, the rotor is connected with a motor in a driving manner, and the motor is connected with a central control system; one end of the sliding rail is arranged in the oven body and is connected with the side wall of the oven body; the other end of the sliding rail penetrates through the oven body and is connected with the shearing system;
the sample containing vessel is of a frame structure provided with a bottom plate, a convex mouth is arranged on the side wall of the frame structure, and the size of the convex mouth is smaller than the diameter of a feed inlet of the transmission system;
the sample containing vessel is connected with the slide rail in a sliding manner, and the sample containing vessel is connected with a driving motor which is connected with a central control system;
this internal infrared sensor that is provided with of oven for gather flourishing appearance ware, and with the information transmission to central control system who gathers, the information that cavity control system will gather and then control the operating condition who flourishes the appearance ware, wherein, when the flourishing appearance ware is gathered to infrared sensor, the control of cavity control system is flourished the appearance ware and is stopped advancing.
Preferably, the transmission system comprises a negative pressure material pumping instrument, an electronic balance, an infrared sensor, a second material outlet, a third motor, a material baffle plate, a material discharging plate and a box body, wherein an end cover is arranged at the top of the box body and is of a concave quadrangular frustum pyramid structure;
the bottom of the concave quadrangular frustum pyramid structure is provided with a long strip hole, and a blanking plate is assembled in the long strip hole; the blanking plate is arranged in the inner cavity of the box body, and a sealing structure is arranged between the top of the blanking plate and the strip hole;
the lower end of the blanking plate is of a flaring structure, and the flaring structure is of a hollow structure;
and a feeding pipeline is arranged in the middle of the upper end of the blanking plate, a second discharge port of the feeding pipeline is communicated with the cavity of the flaring structure, and the aperture of the feed port of the feeding pipeline is larger than that of the second discharge port.
A material baffle plate is arranged at the second discharge port;
a fourth motor is fixed on the outer side wall of the blanking plate, and an output shaft of the fourth motor is connected with the striker plate; the fourth motor is connected with the central control system and is used for controlling the forward and reverse rotation of the fourth motor so as to realize the opening or closing of the striker plate;
the bottom of the flaring structure end of the blanking plate is provided with an electronic balance, and the electronic balance is connected with a central control system and used for transmitting the weight of the collected mixture in real time; the central control system is used for comparing the received weight information with a preset threshold value, and when the received weight information is equal to the preset threshold value, the central control system controls the stop plate to close and simultaneously controls the sample containing vessel to return;
and a discharge port is formed in the side wall of one side, close to the bottom, of the flaring structure end and is connected with the shearing system through the discharge port.
Preferably, the shearing system comprises a high-speed shearing machine, wherein a copper spray head is arranged at a discharge port of the high-speed shearing machine; the copper spray head is connected with the central control system and used for controlling feeding of materials.
Compared with the prior art, the invention has the beneficial effects that:
the multifunctional nanometer modified asphalt preparation instrument provided by the invention realizes an integrated device for preparing surface functionalized nanometer modified asphalt, effectively combines the surface treatment of materials and the modification and shearing of asphalt, simultaneously accurately controls the temperature, the mixing amount and the environment of the nanometer materials in the asphalt mixing process, and eliminates the influence of uncertain factors on experimental results; after the nano material is prepared, the nano material is sheared into dynamic liquid asphalt, but the time for heating the asphalt in advance is difficult to control accurately in practical operation, so that the asphalt is usually placed in an oven for several hours, the aging of the asphalt in a high-temperature environment is inevitable, or the asphalt is taken out from the oven in advance, but the asphalt still needs to be heated for the second time due to the nano material, and the aging problem is also inevitable. The device can avoid the asphalt from being aged due to excessive heating, and the asphalt can immediately start modification processing once entering a flowing preparation state, so that the chemical properties of the two materials are not influenced.
Drawings
FIG. 1 is a schematic structural diagram of a multifunctional nano-modified asphalt preparation instrument;
FIG. 2 is a material synthesis system;
FIG. 3 is a condenser tube in a material synthesis system;
FIG. 4 is a high speed centrifuge disk;
fig. 5 is an internal configuration of the drying system;
FIG. 6 is a partial view of a material transport system;
fig. 7 is a closed state diagram of the second discharge port;
fig. 8 is a view showing a second discharge port in an open state;
FIG. 9 is a schematic view of the structure of the sample vessel;
FIG. 10 is a schematic view of the transport system coupled to the shearing system;
FIG. 11 is a rail-mounted high speed shear
FIG. 12 is a push-pull oven internal configuration of the shearing system;
wherein, 1, a first acid liquid containing cylinder 2, a second acid liquid containing cylinder 3, a first particle sample containing cylinder 4, a second particle sample containing cylinder 5, a first weighing cylinder 6, a second weighing cylinder 7, an oven top cover 8, a safety lock 9, a slide rail 10, a control panel 11, a solution reaction kettle 12, a push-pull type oven 13, a high-speed shearing machine 14, a waste liquid collector 15, a visible window 16, a pulley 19, an air duct 20, an electric heating resistance wire 21, an electromagnetic coil 22, a stirring rod 23, a temperature control probe 24, a spray head 25, a first discharge hole 26, a dispersion tank 27, a drainage tube 28, a condensation tube 29, a high-speed centrifuge 30, a first motor 31, a water circulator 32, a second micro-filtration membrane 33, a first-level micro-filtration membrane 34, a material placing disc 35, a second motor 36, a sample containing vessel 37, a humidity sensor 38, a rotor 39, a first particle sample, The device comprises an electronic balance 40, a feeding pipe 41, a cavity 42, an air inlet valve 43, a negative pressure material extraction instrument 44, a discharge pipe 45, a copper spray head 46, a high-speed shearing machine 47, an air extraction guide pipe 48, a first one-way valve 49, a vacuum pump 50, an exhaust bottom plate 51, a plunger metering pump 52, a solution metering pump 53, a one-way valve 54, an infrared sensor 55, a second discharge hole 56, a third motor 57, a material baffle plate 58, a blanking plate 59, a box body 60, a fourth motor 61, a transmission rail 62, an exhaust fan 63 and a storage tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention provides a multifunctional nanometer modified asphalt preparation instrument which comprises a shell, wherein a central control system, a material synthesis system, a drying system, a transmission system and a shearing system are arranged in the shell, and the central control system is respectively connected with the material synthesis system, the drying system, the transmission system and the shearing system.
The material synthesis system is used for modifying and dispersing the surface function of the nano material; a discharge port of the material synthesis system is connected with a feed port of a drying system, and the drying system is used for drying materials; the discharge port of the drying system is connected with the feed port of the shearing system, and the shearing system is used for shearing materials.
The drying system and the shearing system realize material transfer through a conveying system.
The material synthesis system comprises a reaction layer, a dispersion layer and a centrifugal layer, wherein the reaction layer is used for realizing vacuum constant-temperature reaction of a nano material and materials such as absolute ethyl alcohol, nitric acid and methanol so as to realize surface hydrophobization modification of the nano particles.
As shown in fig. 1 to 12, the reaction layer includes a first acid solution containing cylinder 1, a second acid solution containing cylinder 2, a first particle sample containing cylinder 3, a second particle sample containing cylinder 4, a first weighing cylinder 5, a second weighing cylinder 6, a solution reaction kettle 11 and a nozzle 26, wherein the first acid solution containing cylinder 1, the second acid solution containing cylinder 2, the first particle sample containing cylinder 3, the second particle sample containing cylinder 4, the first weighing cylinder 5 and the second weighing cylinder 6 are all connected to a feed inlet of the solution reaction kettle 11.
And a solution metering pump 52 is arranged between the first acid liquid containing cylinder 1 and the second acid liquid containing cylinder 2 and the feed inlet of the solution reaction kettle 11.
And a plunger metering pump 51 is arranged between the first particle sample containing cylinder 3 and the solution reaction kettle 11 and between the second particle sample containing cylinder 4 and the feed inlet of the solution reaction kettle 11.
The feed inlet and the discharge outlet of the solution metering pump 52 and the plunger metering pump 51 are provided with check valves 53.
A first discharge hole 25 is formed in the solution reaction kettle 11; is connected with the dispersion layer through a first discharge port 25.
The temperature control probe 23 is installed on the top inside the solution reaction kettle 11, and is used for adopting the temperature of the cavity of the solution reaction kettle 11 and transmitting the acquired data to the central control system.
The gas guide pipe 19 is arranged on the solution reaction kettle and used for discharging gas in the acid-base chemical reaction process, so that the solution reaction kettle 11 is safer.
The electric heating resistance wire 20 is installed on the inner wall of the solution reaction kettle 11 so as to provide heat source and transfer heat; the electric heating resistance wire 20 is connected with a central control system, and the central control system controls the start and stop of the electric heating resistance wire 20.
Two stirring rods 22 are respectively arranged on two sides of the first discharge hole 25, and the stirring rods 22 and the electromagnetic coil 21 realize electromagnetic induction and realize autorotation under the action of the electromagnetic induction; the stirring device is used for stirring materials in a reaction layer, ensures uniform temperature conduction in solution thermal reaction, and prevents solid materials from settling and condensing to a certain degree.
The dispersion layer includes a dispersion tank 26 and an electromagnetic coil 21, wherein the electromagnetic coil 21 is disposed on an outer side wall of the solution reaction tank 11 and is disposed along a circumferential direction thereof.
The dispersion tank 26 is arranged below the solution reaction kettle 11; an ultrasonic dispersion system is placed in the dispersion tank 26 and is connected to a central control system.
The model of the ultrasonic dispersion system is HN-1500.
The temperature range of the ultrasonic dispersion system is set between 30 ℃ and 70 ℃, and the ultrasonic dispersion frequency is set to be five grades of 20 kHz, 28 kHz, 40 kHz and 501 kHz.
The magnetic induction coil 21 is used for realizing the dispersion treatment of the material while the material reacts, so that the primary dispersion treatment is realized; the dispersion of the secondary material is efficiently realized by the ultrasonic dispersion system.
The centrifugal layer comprises a high-speed centrifuge 29, a first motor 30, a primary microfiltration membrane 33, a secondary microfiltration membrane 32 and a material placing disc 34, wherein a driving motor of the high-speed centrifuge 29 is connected with a central control system.
The secondary microfiltration membrane 32 and the primary microfiltration membrane 33 are both disc structures, and circular grooves are formed in the end faces of the secondary microfiltration membrane and the primary microfiltration membrane.
The first microfiltration membrane 35 is placed in the groove of the second microfiltration membrane 24; the material placing disc 34 is placed in the groove of the primary microfiltration membrane 33.
The secondary microfiltration membrane 32 is placed in a high speed centrifuge 29.
The lower end of the material placing disc 34 is connected with a first motor 30; the first motor 30 is connected to a central control system.
The pore size of the first-stage microfiltration membrane 33 and the second-stage microfiltration membrane 32 is less than 0.1 micron.
The functionalized nano material is primarily centrifuged out by a high-speed centrifuge and a high-speed turntable as a support and a secondary screening as a means.
The waste liquid outlet of the high-speed centrifuge is communicated with the waste liquid collector 14 through a drainage tube 27.
And a condensing pipe 28 is arranged between the discharge hole of the solution reaction kettle 11 and the feed inlet of the dispersion layer, so as to realize physical cooling of the material.
The cold source inlet of the condensation pipe 28 is connected with the tap water pipe.
The outer side wall of the shell is provided with a visual window 15, and the visual window 15 is arranged at one end of the material synthesis system.
The drying system comprises an oven body, a vacuum pumping system, a supporting plate and a sample containing vessel 36, wherein the supporting plate is arranged in the middle of an inner cavity of the oven body, a sliding rail 9 is arranged on the supporting plate, the sample containing vessel 36 is arranged on the sliding rail 9, a rotor 38 is installed in the sample containing vessel 36, the rotor 38 is in driving connection with a motor, and the motor is connected with a central control system.
The sample containing vessel 36 is connected with the slide rail 9 in a sliding manner, and is connected with a driving motor which is connected with a central control system.
One end of the slide rail 9 is arranged in the oven body and is connected with the side wall of the oven body; the other end is connected with a transmission system.
This internal infrared sensor that is provided with of oven for gather flourishing appearance ware, and with the information transmission to central control system who gathers, the information that cavity control system will gather and then control the operating condition who flourishes appearance ware 36, wherein, when flourishing appearance ware was gathered to infrared sensor, cavity control system control flourishes appearance ware 36 and stops.
The vacuum air exhaust system is arranged in the oven body and used for vacuumizing the oven body.
The vacuum pumping system comprises a vacuum pump 49, a first one-way valve 48 and a pumping guide pipe 47, wherein the output end of the vacuum pump 49 is connected with the pumping guide pipe 47, and the free end of the pumping guide pipe 47 penetrates through the support plate and is arranged at the upper half part of the oven body.
A first one-way valve 48 is provided between the bleed duct 47 and the output shaft of a vacuum pump 49.
The bottom of the oven body is an exhaust bottom plate 50.
The vacuum pump 49 is connected to a central control system.
The top of the oven body is provided with a pressure sensor and a humidity detector 37, wherein the pressure sensor and the humidity detector 37 are both connected with a central control system.
The top of the oven body is an oven top cover 7.
The oven is characterized in that a box door is arranged on the oven body, a safety lock 8 is arranged on the box door, and the safety lock 8 is connected with a central control system.
The sample containing vessel 36 is of a frame structure provided with a bottom plate, a convex mouth 3601 is arranged on the side wall of the frame structure, and the size of the convex mouth is smaller than the diameter of a feed port of the transmission system.
The transmission system comprises a cavity 41, a negative pressure material pumping instrument 43, an electronic balance 39, an infrared sensor 54, a second material outlet 55, a third motor 56, a material baffle 57 and a blanking plate 58, wherein a box body 59 is placed in the cavity 41, the electronic balance 39 is arranged at the bottom of the inner cavity of the box body 59, and the electronic balance 39 is connected with a central control system.
The top of box 59 is provided with the end cover, the end cover is the four prismatic table structures of indent.
The bottom of the concave quadrangular frustum pyramid structure is provided with a strip hole, and a blanking plate 58 is assembled in the strip hole.
The blanking plate 58 is arranged in the inner cavity of the box body 59, and a sealing structure is arranged between the top of the blanking plate 58 and the strip-shaped hole.
The lower end of the blanking plate 58 is of a flaring structure, and the flaring structure is of a hollow structure.
A feeding pipeline is arranged in the middle of the upper end of the blanking plate 58, a second discharging hole 55 of the feeding pipeline is communicated with the cavity of the flaring structure, and the aperture of the feeding hole of the feeding pipeline is larger than that of the second discharging hole 55.
A material baffle plate 57 is arranged at the second material outlet 55.
As shown in fig. 8, a fourth motor 60 is fixed on an outer side wall of the blanking plate 58, and an output shaft of the fourth motor 60 is connected with the striker plate 57.
The fourth motor is connected with the central control system, and is used for controlling the forward and reverse rotation of the fourth motor so as to open or close the striker plate 57.
An electronic balance 39 is arranged at the bottom of the flaring structure end of the blanking plate 58, the electronic balance 39 is connected with the central control system and used for transmitting the weight of the collected mixture in real time, and if the weight information received by the medium-pressure control system is equal to a preset threshold value, the central control system controls the material baffle plate 57 to close and controls the sample container 36 to return.
And a discharge port is formed in the side wall of one side, close to the bottom, of the flaring structure end and is connected with the shearing system through the discharge port.
The other end of the slide rail 9 is of a bent structure, and the bent end is matched with the concave surface of the end cover of the blanking plate 58.
The top of box 59 is provided with infrared sensor for gather flourishing appearance ware, and with the information transmission to central control system who gathers, the information that cavity control system will gather and then control the operating condition who flourishes appearance ware 36, and wherein, when the flourishing appearance ware was gathered to infrared sensor, cavity control system control flourishes appearance ware 36 and stops.
The end part of the slide rail 9, which is arranged at one end of the box body 59, is provided with a weight sensor for collecting the mass of the sample containing vessel 36 and transmitting the collected data to the central controller, and the central controller is used for comparing the received mass with a preset threshold value and further controlling the back of the sample containing vessel 36.
The inlet end of the negative pressure material pumping instrument 43 is connected with a material feeding pipe 40, and the free end of the material feeding pipe 40 is connected with a material outlet at the bottom of the flaring structure.
The surface of the electronic balance 39 is a polished surface.
An air inlet valve 42 is arranged between the feeding pipe 40 and the negative pressure material pumping instrument 43.
The discharge hole of the negative pressure material pumping instrument 43 is connected with a discharge pipe 44, and the free end of the discharge pipe 44 is connected with a shearing system.
The shearing system comprises a high-speed shearing machine 46 and the push-pull oven 12, wherein the high-speed shearing machine 46 is placed in the push-pull oven 12, an end cover is arranged at a feeding hole of the high-speed shearing machine, and the free end of the discharging pipe 44 is installed on the end cover.
A copper spray head 45 is arranged at the discharge port of the high-speed shearing machine 46.
The high-speed shearing machine 46 is provided with a plurality of high-speed shearing machines 46, and the slideways of the high-speed shearing machines are arranged on the conveying track 61.
The copper spray head 45 is connected with a central control system and used for controlling feeding of materials.
The central control system comprises a controller and a control panel, wherein the control panel comprises five modes: material synthesis mode, centrifugation mode, drying mode, transmission mode and shearing mode.
Wherein, a metering pump control key, a plunger pump control key, a one-way valve control key, a temperature setting key and the like are arranged in the material synthesis mode.
The centrifugal mode is provided with a condensation pipe control key, a two-stage dispersion key, a magnetic induction control key and a centrifugal setting key.
The drying mode is provided with a safety lock button, a vacuum pump control button, a drying system control button and a sample container control button.
The transmission mode is provided with an electronic balance control key and a transmission material key.
The shearing mode comprises a shearing speed setting key, a control key of a transmission track and a control key of a drying system.
Control key of the metering pump: controlling the operation of the solution metering pump 62;
plunger pump control button: controlling the operation of the plunger metering pump 61;
the check valve controls the button: control of opening and closing of the check valve 63 is performed;
temperature setting button: carrying out quantitative temperature rise and temperature reduction regulation on the environmental temperature in the material synthesis mode;
condenser tube control key: controlling the water inlet link of the condensation pipe 28;
two-stage dispersion key: regulating and controlling the work of primary dispersing treatment and secondary material dispersion;
magnetic induction control button: controlling the starting and stopping of the electromagnetic coil 23 in the centrifugal mode;
centrifugally setting a key: the rotation speed of the high-speed centrifuge 29 is controlled.
The safety lock key: opening all locking states of the whole machine;
vacuum pump control button: turning on and off the vacuum pump 53;
drying system control button: regulating and controlling the drying temperature, the drying time and the drying speed;
the sample containing vessel control key is used for controlling the running speed and the start and stop of the sample containing vessel.
Electronic balance control button: control of the electronic balance on or off, and metering readings.
A material transmission key: the opening and closing of the negative pressure material pumping instrument 47 and the pumping speed of the discharge pipe 48 are regulated and controlled;
the shear rate is provided with a key: setting the spraying amount of a copper spray head 49 and setting the shearing parameters of a high-speed shearing machine 50;
slide rail control button: control of the high speed shearing machine 50 to move left and right;
the bottom of the housing is provided with pulleys 16.
The working principle is as follows:
in the environment of an integrated device, the technical scheme of strict constant temperature vacuum and the like in the preparation process of the nano material is strictly followed by the cooperation of a material synthesis system, a drying system, a transmission system and a shearing system and the matching links of constant temperature equipment, electromagnetic equipment, vacuum equipment and the like, a central control system is used as a circuit output master control end of each system, multifunctional and integrated preparation and synthesis of nano modified asphalt are realized, the complicated steps of material surface processing, material centrifugation, material drying and heat preservation and the like are greatly shortened, and intelligent preparation is practiced in the process.
In order to realize the purpose of integrating processing and preparation into a whole, so as to greatly shorten the actual operation time of the test and save the material consumption cost, the invention realizes the modification and dispersion of the surface function in a material synthesis system synthesized by nano materials, takes the phase state as the classification standard of the materials, and simultaneously pours the materials into a material storage device, the material storage device is connected with a solution reaction kettle by a metering pump, and the upper part and the lower part of the metering pump are respectively provided with a one-way valve; in consideration of the characteristics of extremely large specific surface area and extremely easy flocculation and agglomeration of inorganic nanoparticles, a nanoparticle dispersing device and a centrifugal device are additionally arranged below a reaction kettle, and the device is provided with a two-stage dispersing method: the primary electromagnetic dispersion and the secondary ultrasonic dispersion are used for ensuring that the dispersibility of the nano particles flowing into the drying system reaches the standard, the nano particles in the suspension are separated from the reaction waste liquid in a centrifugal separation mode in consideration of the variability problem of the nano particles before drying, and the rotating speed of the high-speed centrifuge is controlled within the range of 1000rpm-16000 rpm.
The device adopts a centrifugal method combining a microfiltration membrane and a centrifugal machine to obtain surface functionalized nano materials with primary separation and small relative humidity, the functionalized nano materials are uniformly placed on a conveying belt, after a drying top cover is locked, a central control system automatically enters all parts of the facility into a safety lock mode, the material is pushed and conveyed through the conveying belt, the residence time and the real-time control of an oven environment are realized through the central control system, at the moment, a vacuum pump is connected with the drying facility through a gas conveying pipeline, a gas exchange port is specially arranged at the lower part of the drying facility, after the drying mode is finished, the nano materials flow into the conveying system in a conveying belt conveying mode, the system enters a preparation mode of modified asphalt, the quality is taken as variable parameters of the asphalt and the nano materials, after the material quality required by feeding is input into the system, the dried materials in the conveying system are pumped to a conveying pipeline through an internal negative pressure pump, the nano material is pumped into a spray head on a high-speed shearing instrument through a solid conveying pipeline and is uniformly mixed into the asphalt in a directional and quantitative mode.
The multifunctional nanometer modified asphalt preparation instrument provided by the invention comprises the following specific use steps:
the pulley 16 is fixed, a power supply at the lower back is connected with 380v voltage, and a three-phase plug is adopted for connecting electricity. And opening the water inlet system, connecting the inlet valve of the condensation pipe with tap water, closing the water inlet system after the interface displays the capacity within the set range, and closing the inlet valve.
Pouring nano solid particles into a first particle containing cylinder and a second particle containing cylinder, pouring acid liquid into the first acid liquid containing cylinder and the second acid liquid containing cylinder, pouring other liquid materials into a first weighing cylinder and a second weighing cylinder, opening a one-way valve after the materials are completely fed, quantitatively inputting the planned dosage of each material into a control panel interface, closing the one-way valve after clicking a confirmation button, opening a solution metering pump and a plunger metering pump, converging the materials into a solution reaction kettle 11, and pumping the metering pump materials into the solution reaction kettle through a nozzle by unmodified nano particles.
And opening the first one-way valve, connecting the air guide pipe with the air exhaust guide pipe, starting the vacuum pump 49 to perform vacuum pumping treatment, simultaneously starting the electromagnetic heating device to enable the temperature in the reaction kettle to rise to the set temperature, closing the electromagnetic heating part after the set temperature is reached, maintaining the constant-temperature vacuum state control panel to input the specified rotating speed of the rotor, and starting the electromagnetic coil working mode to maintain the perfect dispersibility of the nano material after the reaction and achieve the purpose of primary dispersion.
After the reaction is finished, the control panel starts condensed water cooling treatment, the condensed water in the water storage tank is started to circularly cool, and the water outlet of the water circulator is connected with the water inlet of the condensation pipe; the water inlet of the water circulator is connected with the water outlet of the condenser pipe, so that the freeze-thaw cycle supply of cold water is realized. Opening a discharge port to introduce the reaction liquid into a cooling layer, detecting the actual temperature by a temperature control probe, starting a secondary dispersion mode after the actual temperature is reduced to the standard temperature, introducing the cooled reaction liquid into an ultrasonic dispersion tank, and opening an ultrasonic control switch to carry out secondary dispersion treatment. The panel is provided with dispersion time, temperature and frequency, and when dispersion is completed, the last step of the system is centrifugation of the nano suspension.
The leakage valve of the dispersion tank is opened, so that the nano reaction liquid slowly enters the material placing disc, the control panel starts high-speed centrifugation under the driving of the motor after inputting the centrifugation speed, the waste liquid is collected through the guide pipe and the waste liquid collector, and the undried surface functionalized nano particles are left on the microfiltration membrane. The control panel closes the safety lock, sets up the manual sampling mode, brushes away the nanometer sample after opening the cabinet door below.
The slide rail 9 is responsible for transmitting the sample containing vessel 36 in real time in cooperation with a conveyor belt, and slowly and uniformly spreading the nano sample in the sample containing vessel 36, wherein the stacking height of the nano sample is not more than three-fourths of the sample containing vessel; after the top cover is closed, the control panel opens the safety lock device, and various systems enter a safety locking mode.
The drying system is in a vacuum drying state, and a vacuum pump of the vacuumizing mechanism can be connected with an exhaust bottom plate on the cavity through an exhaust guide pipe so as to vacuumize the closed space of the cavity.
The first one-way valve is arranged on the air exhaust guide pipe, and the first one-way valve enables air to flow towards one direction through the air exhaust guide pipe so as to prevent outside air from entering the closed space of the cavity in the process of vacuumizing or after vacuumizing is stopped. The pressure and the humidity in the cavity are detected when the sensor is adopted, so that the sample to be dried is dried under the environment with certain pressure and humidity, the performance of the sample to be dried is prevented from being influenced by water in the environment in the drying process, and the sample to be dried is dried under a specific pressure environment, so that the drying speed of the sample to be dried is facilitated. The small rotor is inclined at 40-45 degrees, and a uniform stirring method is adopted to pave and age the samples on the sample container 36 so as to obtain a better drying effect. The control panel captures and observes the drying data in time to control the conveyor belt to transmit to the next stage.
In a conveying mode, the material inclined plane falls into the blanking plate, a second discharge hole is formed in the middle of the blanking plate so as to facilitate material transmission, a reserved hole is opened after the sensor monitors that the material falls into the blanking plate, the material slowly falls into the electronic balance 39 (with the precision of 0.001), the mass of the nano material required by the preparation of the modified asphalt can be accurately weighed, and the actual mixing amount required by a tester is taken as the real time, when the weighing and theoretical errors are within the range of 0.095 +/-g, the system automatically closes the material baffle plate through the control panel, the material baffle plate returns to the original position to block the second discharge hole, it is controlled by a motor, a data input form transmission terminal of the electronic micro balance is in a central control system, is regulated and controlled by an electronic balance control key in a transmission mode, the process is the working state of the transmission system of the instrument, and the reading displayed by the balance is matched with the real-time opening and closing received by the pores, so as to achieve the purpose of accurately weighing the doped nano material; and simultaneously, opening the negative pressure material pumping instrument, connecting the negative pressure material pumping instrument with the two material conveying guide pipes, and pumping the quantified surface modified nano material into a copper spray head at the end of the high-speed shearing machine.
In order to control the test error within a certain range, the shearing system of the device is prepared by simultaneously preparing two groups of samples, a container in the form of asphalt is placed into the shearing system, a small-sized drawing oven is arranged in an environment of 163 +/-2 ℃, the asphalt is preheated to a flow-modified state, after about 1.5h, a high-speed shearing device and an upper powder spray nozzle thereof are opened, a test means of coexistence of directional and quantitative shearing and feeding is realized, and a control panel controls the heating temperature of a push-pull type oven and the speed of a shearing machine.
Claims (8)
1. The multifunctional nanometer modified asphalt preparation instrument is characterized by comprising a shell, wherein a central control system, a material synthesis system, a drying system, a transmission system and a shearing system are arranged in the shell, and the central control system is respectively connected with the material synthesis system, the drying system, the transmission system and the shearing system; the material synthesis system is used for modifying and dispersing the surface function of the nano material; the discharge hole of the material synthesis system is connected with the feed inlet of the drying system; the discharge hole of the drying system is connected with the feed inlet of the shearing system; the drying system and the shearing system realize the transfer of materials through a transmission system;
the material synthesis system comprises a reaction layer, a dispersion layer and a centrifugal layer, wherein the reaction layer is used for modifying and dispersing the surface function of the nano material; the discharge hole of the reaction layer is connected with a dispersion layer, and the dispersion layer is used for dispersing materials; the discharge hole of the dispersion layer is connected with the centrifugal layer; the centrifugal layer is used for realizing the centrifugation of the functionalized nano material; and a discharge hole of the centrifugal layer is connected with a drying system.
2. The multifunctional nanometer modified asphalt preparation instrument according to claim 1, wherein the reaction layer comprises a first acid liquid containing cylinder (1), a second acid liquid containing cylinder (2), a first particle sample containing cylinder (3), a second particle sample containing cylinder (4), a first weighing cylinder (5), a second weighing cylinder (6), a solution reaction kettle (11) and a spray head (24), wherein the first acid liquid containing cylinder (1), the second acid liquid containing cylinder (2), the first particle sample containing cylinder (3), the second particle sample containing cylinder (4), the first weighing cylinder (5) and the second weighing cylinder (6) are all connected with a feed inlet of the solution reaction kettle (11); a first discharge hole (25) is formed in the solution reaction kettle (11); is connected with the dispersion layer through a first discharge hole (25);
a solution metering pump (52) is arranged between the first acid containing liquid cylinder (1) and the second acid containing liquid cylinder (2) and the feed inlet of the solution reaction kettle (11);
a plunger metering pump (51) is arranged between the first particle sample containing cylinder (3) and the second particle sample containing cylinder (4) and the feed inlet of the solution reaction kettle (11);
and the feed inlets and the discharge outlets of the solution metering pump (52) and the plunger metering pump (51) are respectively provided with a one-way valve (53).
3. The multifunctional nanometer modified asphalt preparation instrument according to claim 1, wherein the dispersion layer comprises a dispersion tank (26) and an electromagnetic coil (21), wherein the electromagnetic coil (21) is arranged on the outer side wall of the solution reaction kettle (11) and arranged along the circumferential direction thereof;
the dispersion tank (26) is arranged below the solution reaction kettle (11); an ultrasonic dispersion system is placed in the dispersion tank (26), and the ultrasonic dispersion system is connected with a central control system.
4. The multifunctional nanometer modified asphalt preparation instrument according to claim 1, wherein the centrifugal layer comprises a high-speed centrifuge (29), a first motor (30), a primary microfiltration membrane (33), a secondary microfiltration membrane (32) and a material placing disc (34), wherein a driving motor of the high-speed centrifuge (29) is connected with a central control system; the secondary microfiltration membrane (33) and the primary microfiltration membrane (32) are both of disc structures, and the end surfaces of the secondary microfiltration membrane and the primary microfiltration membrane are provided with circular grooves;
the micro-filtration membrane (33) is arranged in the groove of the secondary micro-filtration membrane (32); the material placing disc (34) is placed in a groove of the primary microfiltration membrane (33);
the secondary microfiltration membrane (32) is placed in a high-speed centrifuge (29);
the lower end of the material placing disc (34) is connected with a first motor (30); the first motor (30) is connected with a central control system.
5. The apparatus of claim 1, wherein a cooling device is disposed between the outlet of the reaction layer and the inlet of the dispersion layer.
6. The multifunctional nanometer modified asphalt preparation instrument according to claim 1, wherein the drying system comprises an oven body, a vacuum pumping system, a support plate and a sample container (36), wherein the support plate is arranged in the middle of the inner cavity of the oven body, a slide rail (9) is arranged on the support plate, the sample container (36) is arranged on the slide rail (9), a rotor (38) is installed in the sample container (36), the rotor (38) is in driving connection with a motor, and the motor is connected with a central control system; one end of the sliding rail (9) is arranged in the oven body and is connected with the side wall of the oven body; the other end of the sliding rail (9) penetrates through the oven body and is connected with the shearing system;
the sample containing vessel (36) is of a frame structure provided with a bottom plate, a convex mouth (3601) is arranged on the side wall of the frame structure, and the size of the convex mouth is smaller than the diameter of a feed port of the transmission system;
the sample containing vessel (36) is in sliding connection with the sliding rail (9), the sample containing vessel is connected with a driving motor, and the driving motor is connected with a central control system;
this internal infrared sensor that is provided with of oven for gather flourishing appearance ware, and with the information transmission to central control system who gathers, the information that cavity control system will gather and then control the operating condition who flourishes appearance ware (36), wherein, when the flourishes appearance ware is gathered to infrared sensor, cavity control system control flourishes appearance ware (36) and stops.
7. The multifunctional nanometer modified asphalt preparation instrument according to claim 1, wherein the transmission system comprises a negative pressure material pumping instrument (43), an electronic balance (39), an infrared sensor (54), a second material outlet (55), a third motor (56), a material baffle plate (57), a blanking plate (58) and a box body (59), wherein an end cover is arranged at the top of the box body (59), and the end cover is of a concave quadrangular frustum pyramid structure;
the bottom of the concave quadrangular frustum pyramid structure is provided with a long strip hole, and a blanking plate (58) is assembled in the long strip hole; the blanking plate (58) is arranged in an inner cavity of the box body (59), and a sealing structure is arranged between the top of the blanking plate (58) and the strip-shaped hole;
the lower end of the blanking plate (58) is of a flaring structure, and the flaring structure is of a hollow structure;
a feeding pipeline is arranged in the middle of the upper end of the blanking plate (58), a second discharging hole (55) of the feeding pipeline is communicated with the cavity of the flaring structure, and the aperture of the feeding hole of the feeding pipeline is larger than that of the second discharging hole (55);
a material baffle plate (57) is arranged at the second discharge hole (55);
a fourth motor (60) is fixed on the outer side wall of the blanking plate (58), and an output shaft of the fourth motor (60) is connected with the material blocking plate (57); the fourth motor is connected with the central control system and is used for controlling the forward and reverse rotation of the fourth motor so as to open or close the striker plate (57);
an electronic balance (39) is arranged at the bottom of the flaring structure end of the blanking plate (58), and the electronic balance (39) is connected with a central control system and used for transmitting the weight of the collected mixture in real time; the central control system is used for comparing the received weight information with a preset threshold value, and when the received weight information is equal to the preset threshold value, the central control system controls the material baffle plate (57) to be closed and simultaneously controls the sample containing vessel (36) to return;
and a discharge port is formed in the side wall of one side, close to the bottom, of the flaring structure end and is connected with the shearing system through the discharge port.
8. The multifunctional nanometer modified asphalt preparation instrument according to claim 1, characterized in that the shearing system comprises a high-speed shearing machine (46), wherein a copper spray head (45) is arranged at the discharge port of the high-speed shearing machine (46); the copper spray head (45) is connected with a central control system and used for controlling feeding of materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010066219.7A CN111253963B (en) | 2020-01-20 | 2020-01-20 | Multifunctional nanometer modified asphalt preparation instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010066219.7A CN111253963B (en) | 2020-01-20 | 2020-01-20 | Multifunctional nanometer modified asphalt preparation instrument |
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| Publication Number | Publication Date |
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| CN111253963A true CN111253963A (en) | 2020-06-09 |
| CN111253963B CN111253963B (en) | 2021-06-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009152461A2 (en) * | 2008-06-13 | 2009-12-17 | Asphalt Technology Llc. | Methods and systems for manufacturing modified asphalts |
| CN103882795A (en) * | 2014-02-25 | 2014-06-25 | 河南省交通科学技术研究院有限公司 | Nanopowder particle adding and mixing device for preparing modified asphalt |
| CN108745252A (en) * | 2018-07-09 | 2018-11-06 | 北京市计量检测科学研究院 | A kind of micro Nano material preparation facilities |
| CN209763721U (en) * | 2019-01-09 | 2019-12-10 | 上海赢琅实业有限公司 | Drying device is with from unloader |
-
2020
- 2020-01-20 CN CN202010066219.7A patent/CN111253963B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009152461A2 (en) * | 2008-06-13 | 2009-12-17 | Asphalt Technology Llc. | Methods and systems for manufacturing modified asphalts |
| CN103882795A (en) * | 2014-02-25 | 2014-06-25 | 河南省交通科学技术研究院有限公司 | Nanopowder particle adding and mixing device for preparing modified asphalt |
| CN108745252A (en) * | 2018-07-09 | 2018-11-06 | 北京市计量检测科学研究院 | A kind of micro Nano material preparation facilities |
| CN209763721U (en) * | 2019-01-09 | 2019-12-10 | 上海赢琅实业有限公司 | Drying device is with from unloader |
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| CN111253963B (en) | 2021-06-01 |
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