CN113694857A - Device for producing activated desulfurized rubber powder modified asphalt - Google Patents
Device for producing activated desulfurized rubber powder modified asphalt Download PDFInfo
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- CN113694857A CN113694857A CN202110963792.2A CN202110963792A CN113694857A CN 113694857 A CN113694857 A CN 113694857A CN 202110963792 A CN202110963792 A CN 202110963792A CN 113694857 A CN113694857 A CN 113694857A
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- 239000000843 powder Substances 0.000 title claims abstract description 64
- 239000010426 asphalt Substances 0.000 title claims abstract description 56
- 238000003756 stirring Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 8
- 230000023556 desulfurization Effects 0.000 claims abstract description 8
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- 210000001503 joint Anatomy 0.000 claims description 79
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- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000009529 body temperature measurement Methods 0.000 claims description 16
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- 239000011159 matrix material Substances 0.000 claims description 3
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- 230000004913 activation Effects 0.000 abstract description 6
- 238000003032 molecular docking Methods 0.000 description 7
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- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000010920 waste tyre Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
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- 229920002209 Crumb rubber Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/126—Microwaves
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
- B01J2219/00058—Temperature measurement
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- B01J2219/1209—Features relating to the reactor or vessel
- B01J2219/1221—Features relating to the reactor or vessel the reactor per se
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/12—Processes employing electromagnetic waves
- B01J2219/1203—Incoherent waves
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- B01J2219/1209—Features relating to the reactor or vessel
- B01J2219/1221—Features relating to the reactor or vessel the reactor per se
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/12—Processes employing electromagnetic waves
- B01J2219/1203—Incoherent waves
- B01J2219/1206—Microwaves
- B01J2219/1248—Features relating to the microwave cavity
- B01J2219/1251—Support for the reaction vessel
Abstract
The invention discloses an activated desulfurized rubber powder modified asphalt production device, which belongs to the technical field of rubber asphalt production equipment and comprises a microwave resonant cavity connected with a microwave generator, wherein the bottom of the microwave resonant cavity is provided with a stirring mechanism embedded with a temperature measuring element; a directional conveying system which can be connected with the microwave resonant cavity is arranged below the microwave resonant cavity, the rubber powder asphalt mixed liquid in the low-temperature area in the microwave resonant cavity can be conveyed to the high-temperature area, and the temperature compensation radiation is carried out on the low-temperature rubber powder asphalt mixed liquid. According to the invention, a microwave generator is connected with a microwave resonant cavity through a waveguide, a stirring mechanism at the bottom is used for stirring the internal rubber powder asphalt mixed liquid, a temperature measuring element in the stirring mechanism is used for carrying out distributed real-time measurement on the rubber powder temperature, and a directional conveying system conveys the rubber powder asphalt mixed liquid in a low-temperature area in the microwave resonant cavity to a high-temperature area for carrying out temperature compensation, so that the rubber powder is uniformly heated, and uniform activation and desulfurization of the rubber powder are realized.
Description
Technical Field
The invention belongs to the technical field of rubber asphalt production equipment, and particularly relates to a production device of activated desulfurized rubber powder modified asphalt.
Background
The modified asphalt material has good high and low temperature performance, improves the wear resistance of the road surface and prolongs the service life, so that the modified asphalt material is widely applied to the aspects of paving the asphalt road surface of the high-grade highway, maintaining the road, producing asphalt coiled materials for water prevention of buildings and the like. The modified asphalt is produced by processing waste tires into rubber powder particles, and in the microwave desulfurization and activation process of waste tire rubber powder, the rubber powder temperature is the most important index for representing the desulfurization and activation effect of the waste tire rubber powder, so that the distributed real-time measurement of the rubber powder temperature in a microwave resonant cavity is needed to realize accurate control. The existing temperature measurement technology cannot realize the measurement of the temperature of rubber powder in the microwave resonant cavity, the heating consistency of the internal rubber powder is difficult to ensure, and the uniform desulfurization and activation of the rubber powder cannot be realized.
In the field of heating and drying, the superiority of high-frequency (including microwave and radio frequency) heating and drying technology is shown in many industries, but the measurement of temperature under high-frequency strong electromagnetic field still has great technical difficulty up to now. The temperature of an object under a high-frequency strong electromagnetic field is measured by using a conventional temperature measuring instrument, such as a mercury thermometer, a thermocouple, a copper or platinum thermistor, and not only interference signals are introduced into the measuring instrument through electromagnetic coupling, but also temperature rise (thermal effect) due to heat generation of a temperature sensing element by induced currents generated by a conductor under the high-frequency electromagnetic field, especially due to skin effect and eddy current effect. Therefore, the automatic temperature control is difficult to realize in the current production process of high-frequency heating and drying. Therefore, in many cases, the effects of high-frequency heating and drying cannot be sufficiently exhibited, and it can be said that the problem of temperature measurement has prevented further progress of production in this field.
Disclosure of Invention
The invention aims to solve the technical problem of providing an activated desulfurized rubber powder modified asphalt production device which can compensate the temperature of rubber powder through a directional conveying system based on accurate and rapid measurement of a temperature field, so that the global temperature of the rubber powder tends to be consistent, and the desulfurization and activation effects of the rubber powder are ensured.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the device for producing the activated desulfurized rubber powder modified asphalt comprises a microwave resonant cavity for containing a mixed solution of the rubber powder asphalt mixed solution, wherein the microwave resonant cavity is connected with a microwave generator, the bottom of the microwave resonant cavity is provided with a stirring mechanism, and a temperature measuring element is embedded in the stirring mechanism and used for performing distributed measurement on the temperature of the mixed solution of the rubber powder asphalt; and a directional conveying system is arranged below the microwave resonant cavity, can be connected with the microwave resonant cavity, and can convey the rubber powder asphalt mixed liquid in the low-temperature area in the microwave resonant cavity to the high-temperature area to perform temperature compensation radiation on the low-temperature rubber powder asphalt mixed liquid.
Preferably, the stirring mechanism comprises a stirring shaft and stirring blades on the surface of the stirring shaft, the stirring shaft comprises a hollow metal shaft and a temperature measuring element inside the hollow metal shaft, the temperature measuring element comprises a heat-conducting medium material filled in the inner cavity of the hollow metal shaft and a transmission optical fiber, and the transmission optical fiber penetrates through the central part of the heat-conducting medium material; the temperature measurement device is characterized in that a plurality of temperature measurement points are arranged on the transmission optical fiber at intervals, the transmission optical fiber extends to the outside of the stirring shaft, the tail end of the transmission optical fiber is connected with the temperature measurement module through the rotary connector, the temperature measurement module is connected with the upper computer, and the upper computer is used for displaying, storing and controlling.
Preferably, the rotary connector comprises an inner ring and an outer ring, the inner ring is fixed at the end of the transmission optical fiber, and the outer circle of the inner ring is matched with the inner hole of the outer ring; the outer ring is connected with the temperature measuring module through a signal output line; the temperature measurement module converts the temperature analog signal into a digital signal, and then transmits the digital signal to the upper computer for display, storage and control.
Preferably, the lower part of the microwave resonant cavity is a cuboid with the width of 1.2 meters and the length of 4.8 meters, the number of the stirring shafts is four, the distance between temperature measuring points on each stirring shaft is 0.3 meter, and a square temperature measuring area with the temperature measuring points as the center is formed and is 0.3 multiplied by 0.3; the microwave resonant cavity is internally divided into four temperature measuring units along the length direction, each temperature measuring unit is arranged in the range of 1.2 meters in length, and each temperature measuring unit comprises 16 temperature measuring areas.
Preferably, the directional conveying system comprises two walking trolleys, two jet pumps, a low-pressure suction pipe and a high-pressure jet pipe, the low-pressure suction pipe and the high-pressure jet pipe are respectively connected with an inlet and an outlet of the jet pump, an input connector of the low-pressure suction pipe and an output connector of the high-pressure jet pipe are respectively connected with male connectors of electromagnetic butt-joint pipelines on the two walking trolleys, a plurality of female connectors of the electromagnetic butt-joint pipelines are arranged at the bottom of the microwave resonant cavity and correspond to temperature measuring points on the stirring shaft one by one, and the male connectors of the electromagnetic butt-joint pipelines on the walking trolleys can be respectively in butt joint with the female connectors of the electromagnetic butt-joint pipelines.
Preferably, tracks are arranged below the microwave resonant cavity, the tracks are arranged in a row-column matrix, and the intersection points of the tracks correspond to the temperature measuring points one by one; after being positioned by the laser range finder, the walking trolley can move to the position right below a target temperature measuring area along a track, so that male ends of electromagnetic butt-joint pipelines at the input joint and the output joint are matched with a female end of an electromagnetic butt-joint pipeline at the bottom of the microwave resonant cavity.
Preferably, the electromagnetic butt joint pipe female head comprises a valve body and a valve core, the valve body is fixed on a bottom plate of the microwave resonant cavity, the valve core is arranged in the valve body, the valve core is connected with an inner cavity of the valve body through a spring, a discharge hole of the valve body and a throttling surface matched with the valve core are conical surfaces, and an electromagnetic coil is arranged on the outer wall of the valve body; the lower end of the valve body is provided with a double-layer sleeve, a sealing ring is arranged on the matching surface of an inner cavity of the double-layer sleeve, and the lower end of the double-layer sleeve is butted with the valve body of the electromagnetic butt joint pipeline male head and a guide sleeve outside the valve body; and a valve rod extending to the lower part of the throttling surface is arranged at the lower end of the valve core.
Preferably, the platform of the walking trolley is of a hollow structure, a connecting hole for butt joint with the male head of the electromagnetic butt joint pipeline is formed in the platform, a guide sleeve is arranged on the upper surface of the walking trolley and arranged outside the connecting hole, and the male head of the electromagnetic butt joint pipeline is arranged in the guide sleeve; the electromagnetic butt joint device is characterized in that a corrugated pipe is installed in the connecting hole, the upper end of the corrugated pipe is in butt joint with the lower end of a male head of an electromagnetic butt joint pipeline, and the lower end of the corrugated pipe can be connected with the upper end of an input connector or an output connector.
Preferably, the electromagnetic butt joint pipe male head comprises a valve body and a valve core, the valve core is arranged inside the valve body, the lower end of the valve core is connected with an inner cavity of the valve body through a spring, a throttling surface of a feed port of the valve body, which is matched with the valve core, is a conical surface, and an electromagnetic coil is arranged on the outer wall of the valve body; the upper part of the valve body can be inserted into the double-layer sleeve at the lower end of the valve body and sealed; and a valve rod extending to the upper part of the throttling surface is arranged at the upper end of the valve core.
Preferably, the matching process of the male joint of the electromagnetic docking pipeline and the female joint of the electromagnetic docking pipeline is as follows:
when the travelling trolley moves to a target position, the electromagnetic coils of the electromagnetic butt joint pipeline female head and the electromagnetic butt joint pipeline male head are simultaneously electrified, the polarities are opposite, attraction force is generated, under the action of the attraction force, the electromagnetic butt joint pipeline male head moves upwards and is matched and connected with the electromagnetic butt joint pipeline female head, the electromagnetic butt joint pipeline male head abuts against a valve rod of the electromagnetic butt joint pipeline female head, a spring is pressed, throttling surfaces of the electromagnetic butt joint pipeline male head and the electromagnetic butt joint pipeline female head are opened, and the electromagnetic butt joint pipeline male head is communicated with a pipeline of the electromagnetic butt joint pipeline female head;
when the temperatures of the cold temperature measuring area and the high temperature measuring area reach the average temperature, the current direction of the electromagnetic coils of the male heads of the electromagnetic butt-joint pipelines is changed, the polarities are the same, repulsive force is generated, and the male heads of the electromagnetic butt-joint pipelines move downwards under the action of the repulsive force and are disconnected with the female heads of the electromagnetic butt-joint pipelines; meanwhile, the valve cores of the electromagnetic butt joint pipeline male head and the electromagnetic butt joint pipeline female head extend outwards under the elastic force action of the spring, and the outlet of the valve body is sealed by the throttling surface, so that fluid in the microwave resonant cavity, the input connector and the output connector pipeline cannot flow out.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the microwave generator is connected with the microwave resonant cavity through the waveguide, the bottom stirring mechanism is used for stirring the internal rubber powder asphalt mixed liquid, the temperature measuring element in the stirring mechanism is used for carrying out distributed measurement on the temperature of the rubber powder asphalt mixed liquid, and then the directional conveying system is used for conveying the rubber powder asphalt mixed liquid in the low-temperature area in the microwave resonant cavity to the high-temperature area so as to carry out temperature compensation radiation on the low-temperature rubber powder asphalt mixed liquid. The invention can perform distributed real-time measurement on the temperature of the rubber powder asphalt mixture in the microwave resonant cavity, realize temperature compensation on low-temperature rubber powder through the directional conveying system, ensure uniform heating of the rubber powder and realize uniform activation and desulfurization of the rubber powder.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the lower structure of an activated desulfurized rubber powder modified asphalt production plant provided by an embodiment of the invention;
FIG. 2 is a schematic view showing the internal structure of a stirring shaft in the embodiment of the present invention;
FIG. 3 is a schematic diagram of a layout of temperature measurement units inside a microwave resonant cavity in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a temperature monitoring process in an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a female electromagnetic docking pipe head on a walking trolley in an embodiment of the invention;
FIG. 6 is a schematic structural diagram of a male joint of an electromagnetic docking pipe in an embodiment of the present invention;
in the figure: 1-a microwave resonant cavity, 2-a microwave generator, 3-a stirring shaft, 30-a temperature measuring point, 31-a hollow metal shaft, 32-a heat-conducting medium material, 33-a transmission optical fiber, 34-a temperature measuring unit and 35-a temperature measuring area; 4-directional conveying system, 40-walking trolley, 41-jet pump, 42-low pressure suction pipe and 43-high pressure jet pipe; 5-an electromagnetic butt joint pipeline male head, 6-an electromagnetic butt joint pipeline female head, 7-a track, 8-a rotary connector, 9-a temperature measuring module, 10-an upper computer, 11-a valve body and 110-a double-layer sleeve; 12-valve core, 120-valve stem; 13-spring, 14-electromagnetic coil, 15-guide sleeve, 16-bellows.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the apparatus for producing activated desulfurized rubber powder modified asphalt provided by the invention comprises a microwave resonant cavity 1 for containing a rubber powder asphalt mixture, wherein the microwave resonant cavity 1 is connected with a microwave generator 2, a stirring mechanism is arranged at the bottom of the microwave resonant cavity 1, and a temperature measuring element is embedded in the stirring mechanism and used for performing distributed measurement on the rubber powder temperature; a directional conveying system 4 is arranged below the microwave resonant cavity 1, the directional conveying system 4 can be connected with the microwave resonant cavity 1, and can convey the rubber powder asphalt mixed liquid in the low-temperature region in the microwave resonant cavity 1 to the high-temperature region to perform temperature compensation radiation on the low-temperature rubber powder asphalt mixed liquid. Proper amount of high temperature asphalt is added into the microwave resonant cavity to form mixed rubber powder-asphalt liquid without affecting the microwave desulfurizing and activating effect of rubber powder and the production process of rubber asphalt, and aims at facilitating the local directional conveying of rubber powder. The rubber powder asphalt mixed liquid in the low-temperature area in the microwave resonant cavity is conveyed to the high-temperature area through the directional conveying system, and the low-temperature rubber powder asphalt mixed liquid is subjected to temperature compensation radiation, so that uniform activation and desulfurization of rubber powder are realized.
In a specific embodiment of the present invention, the stirring mechanism includes a stirring shaft 3 and stirring blades on the surface thereof, the stirring shaft 3 includes a hollow metal shaft 31 and a temperature measuring element inside the hollow metal shaft, as shown in fig. 2, the temperature measuring element includes a heat conducting medium material 32 filled in an inner cavity of the hollow metal shaft 31 and a transmission optical fiber 33, and the transmission optical fiber 33 penetrates through a central portion of the heat conducting medium material 32; as shown in fig. 3, a plurality of temperature measuring points 30 are arranged on the transmission optical fiber 33 at intervals, the transmission optical fiber 33 extends to the outside of the stirring shaft 3, the tail end of the transmission optical fiber 33 is connected with the temperature measuring module 9 through the rotary connector 8, the temperature measuring module 9 is connected with the upper computer 10, and the upper computer 10 is used for displaying, storing and controlling.
In the technical scheme, the hollow metal shaft is not only an outer layer protection armor of the whole transmission optical fiber to ensure that the transmission optical fiber has excellent severe environment tolerance, such as wear resistance, high temperature resistance, corrosion resistance and the like, but also has good compatibility with a heat-conducting medium material in the long-term use process, and the characteristics of the optical fiber are not drifted due to the occurrence of adverse chemical reaction with the heat-conducting medium material.
Meanwhile, each point on the transmission optical fiber has the functions of 'transmission' and 'sensing'. When a strong pulse laser signal is transmitted in an optical fiber, the laser pulse interacts with optical fiber molecules to generate a plurality of weak backscattering, and the weak backscattering can be divided into Rayleigh scattering, Raman scattering, Brillouin scattering and the like according to the wavelength of scattered light. Raman scattering is generated by thermal vibration of fiber molecules, and is classified into two types: the stokes light which is not sensitive to temperature and the anti-stokes light which is sensitive to temperature have different wavelengths. In various scattered lights, the correlation between the intensity of the Raman scattering signal and the temperature of the position is the largest, and the temperature information of each point can be obtained by detecting the light intensity of the Raman scattering signal of the point, so that the temperature distribution on the whole stirring shaft can be obtained.
In a particular embodiment, the rotary connector 8 comprises an inner ring fixed to the end of the transmission fiber 33 and an outer ring (not shown) having an outer circle that mates with the inner hole of the outer ring; the outer ring is connected with a temperature measuring module 9 through a signal output line 7, as shown in fig. 4; the temperature measurement module 9 converts the temperature analog signal into a digital signal, and then transmits the digital signal to the upper computer 10 for display, storage and control.
As a preferable structure, as shown in fig. 3 and 4, the lower portion of the microwave resonant cavity 1 is a rectangular parallelepiped, the stirring shafts 3 are multiple and arranged in parallel at the lower portion of the microwave resonant cavity 1, and the temperature measuring points 30 on each stirring shaft 3 are axially and uniformly arranged. During specific design, the cross section of the lower part of the microwave resonant cavity 1 is 1.2 meters wide and 4.8 meters long, the number of the stirring shafts 3 is four, the distance between temperature measuring points 30 on each stirring shaft 3 is 0.3 meter, and a square temperature measuring area 35 with the temperature measuring points 30 as the center is formed, wherein the square temperature measuring area is 0.3 multiplied by 0.3; the microwave resonant cavity 1 is internally divided into four temperature measuring units 34 along the length direction, each temperature measuring unit 34 is arranged in the range of 1.2 meters in length, and each temperature measuring unit 34 comprises 16 temperature measuring areas 35.
The stirring shaft with the structure is adopted for measuring the temperature, and has the following characteristics:
1) and (3) data real-time acquisition, namely acquiring temperature data of the monitored area in real time and storing the temperature data in a database in real time through a temperature measurement module and an upper computer.
2) And (4) data real-time display, namely, a collected temperature distribution curve and a curve of temperature change of each point along with time can be displayed in real time by utilizing an upper computer.
3) Rapidity: the system has very fast temperature measurement and positioning speed. In order to improve the measurement time, a high-speed data filtering technology is adopted to solve the problem of massive digital filtering optimization.
4) Distribution characteristics: and providing continuous dynamic monitoring, wherein the temperature change signals of temperature measuring points are arranged in the axial direction of the stirring shaft at intervals of 0.3 m.
5) The accuracy is as follows: the sampling interval is 10s, the temperature resolution is 0.1 ℃, the temperature precision is 1 ℃, and the positioning precision reaches +/-0.1 m.
6) Safety: the transmission optical fiber adopts optical signals, and the detection temperature is safe and reliable.
In a specific embodiment of the present invention, as shown in fig. 1, 5, and 6, the directional conveying system 4 includes two traveling trolleys 40, a jet pump 41, a low-pressure suction pipe 42, and a high-pressure jet pipe 43, the low-pressure suction pipe and the high-pressure jet pipe are respectively connected to an inlet and an outlet of the jet pump, the two traveling trolleys 40 are provided, an input connector of the low-pressure suction pipe 42 and an output connector of the high-pressure jet pipe 43 are respectively connected to electromagnetic butt joint pipe male connectors 5 on the two traveling trolleys 40, the bottom of the microwave resonant cavity 1 is provided with a plurality of electromagnetic butt joint pipe female connectors 6, the plurality of electromagnetic butt joint pipe female connectors 6 are in one-to-one correspondence with temperature measuring points 30 on the stirring shaft 3, and the electromagnetic butt joint pipe male connectors 5 on the traveling trolleys 40 can be respectively butt joint with the electromagnetic butt joint pipe female connectors 6. According to the distribution position of the temperature measuring area, a track 7 is arranged below the microwave resonant cavity 1, the tracks 7 are arranged in a row-column matrix, the intersection points of the tracks 7 correspond to the temperature measuring points 30 one by one, and the walking trolley 40 can walk on the 4 rows of tracks 7 with 16 columns; after the walking trolley 40 is positioned by the laser range finder, the walking trolley can move to the position right below the target temperature measuring area 35 along the track 7, so that the male heads 5 of the electromagnetic butt-joint pipelines at the input joint and the output joint are matched with the female heads 6 of the electromagnetic butt-joint pipelines at the bottom of the microwave resonant cavity 1.
During specific implementation, the laser range finder is installed on the walking trolley, the laser reflector is installed at one end of the linear track 7, and the position of the reflector ensures that the laser range finder can project light onto the reflector in the whole walking process of the walking trolley. Laser projects to the reflector, and according to light loop time, the distance between the distance meter and the reflector is indirectly calculated, so that the real-time position of the current walking trolley on the fixed track is also indirectly calculated.
The jet mixing system is composed of a jet pump 41, a low-pressure suction pipe 42 and a high-pressure jet pipe 43, wherein the rubber powder asphalt mixed liquid enters the jet pump through the low-pressure suction pipe, is pressurized in the jet pump, and then is sprayed out through a high-pressure jet hose, so that the jet mixing effect is generated in a high-temperature hot area of the microwave resonant cavity.
Since the jet of mixed crumb rubber asphalt mixture is ejected from the high pressure jet hose, the high velocity jet creates a shear layer in a relatively short transition region (whose length is related to the reynolds number Re) immediately adjacent the pipe joint. Vortex is formed due to the rapid growth of natural instability of the shear layer, the vortex action causes entrainment of surrounding fluid by jet flow, and simultaneously, the liquid sprayed at high speed rapidly transfers momentum to the rubber powder asphalt mixed liquid in the microwave resonant cavity, thereby causing local flow. At this time, a large speed difference promotes vigorous mixing.
In a specific embodiment of the present invention, as shown in fig. 6, the electromagnetic docking pipe female head 6 includes a valve body 11 and a valve core 12, the valve body 11 is fixed on the bottom plate of the microwave resonant cavity 1, the valve core 12 is disposed in the valve body 11, the valve core 12 is connected with the upper part of the inner cavity of the valve body 11 through a spring 13, a throttling surface where the discharge port of the valve body 11 is matched with the valve core 12 is a conical surface, and an electromagnetic coil 14 is disposed on the outer wall of the valve body 11; the lower end of the valve body 11 is provided with a double-layer sleeve 110, the matching surface of the inner cavity of the double-layer sleeve 110 is provided with a sealing ring 16, and the lower end of the double-layer sleeve 110 is butted with the valve body of the electromagnetic butt joint pipeline male joint 5 and a guide sleeve 15 outside the valve body; the lower end of the valve core 12 is provided with a valve rod 120 extending to the lower part of the throttle surface.
As a preferable structure, as shown in fig. 5, the platform of the walking trolley 40 is a hollow structure, a connecting hole for butt joint with the male joint of the electromagnetic butt joint pipeline is formed in the platform, a guide sleeve 15 is arranged on the upper surface of the walking trolley 40, the guide sleeve 15 is arranged outside the connecting hole, and the male joint 5 of the electromagnetic butt joint pipeline is arranged in the guide sleeve 15 and can move up and down along the guide sleeve; the corrugated pipe 16 is arranged in the connecting hole, the upper end of the corrugated pipe 16 is in butt joint with the lower end of the electromagnetic butt joint pipeline male head 5, and the lower end of the corrugated pipe 16 can be connected with the upper end of the input connector or the output connector. The electromagnetic butt joint pipe male head 5 comprises a valve body 11 and a valve core 12, wherein the valve core 12 is arranged inside the valve body 11, the lower end of the valve core 12 is connected with the lower part of an inner cavity of the valve body 11 through a spring 13, a throttling surface of a feed port of the valve body 11, which is matched with the valve core 12, is a conical surface, and an electromagnetic coil 14 is arranged on the outer wall of the valve body 11; the upper part of the valve body 11 can be inserted into and sealed by a double-layer sleeve 110 at the lower end of the valve body 11; the upper end of the valve core 12 is provided with a valve rod 120 extending above the throttle surface.
In the specific implementation process of the present invention, the matching process between the electromagnetic docking pipeline male head 5 and the electromagnetic docking pipeline female head 6 is as follows:
when the walking trolley 40 moves to a target position, the electromagnetic coils 14 of the electromagnetic butt joint pipeline female head 6 and the electromagnetic butt joint pipeline male head 5 are simultaneously electrified, the polarities are opposite, attraction force is generated, the electromagnetic butt joint pipeline male head 5 moves upwards under the action of the attraction force and is matched and connected with the electromagnetic butt joint pipeline female head 6, the electromagnetic butt joint pipeline male head 5 abuts against the valve rod 120 of the electromagnetic butt joint pipeline female head 6 to press the spring 13, throttling surfaces of the electromagnetic butt joint pipeline male head 5 and the electromagnetic butt joint pipeline female head 6 are opened, and the electromagnetic butt joint pipeline male head 5 is communicated with a pipeline of the electromagnetic butt joint pipeline female head 6;
when the temperatures of the cold temperature measuring area and the high temperature measuring area reach the average temperature, the current directions of the electromagnetic coils of the male heads 5 of the electromagnetic butt-joint pipelines are changed, the polarities are the same, repulsive force is generated, and the male heads 5 of the electromagnetic butt-joint pipelines move downwards under the action of the repulsive force to be disconnected with the female heads 6 of the electromagnetic butt-joint pipelines; meanwhile, the valve core 12 of the electromagnetic butt joint pipeline male head 5 and the electromagnetic butt joint pipeline female head 6 extends outwards under the elastic force of the spring 113, and the outlet of the valve body 11 is sealed by the throttling surface, so that the fluid in the microwave resonant cavity 1, the input joint and the output joint pipeline cannot flow out.
In order to ensure that the travelling trolley and the electromagnetic butt joint pipeline male head can act according to the temperature of rubber powder in a microwave resonant cavity in real time, the travelling trolley, the electromagnetic butt joint pipeline female head, the electromagnetic butt joint pipeline male head, the temperature measuring module and the upper computer can be controlled by a central control machine.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and thus the present invention is not limited to the specific embodiments disclosed above.
Claims (10)
1. The utility model provides an activated desulfurization rubber powder modified asphalt apparatus for producing which characterized in that: the device comprises a microwave resonant cavity for containing the asphalt mixture of the mixed asphalt mixture of the rubber powder asphalt, wherein the microwave resonant cavity is connected with a microwave generator, the bottom of the microwave resonant cavity is provided with a stirring mechanism, and a temperature measuring element is embedded in the stirring mechanism and used for performing distributed measurement on the temperature of the mixed asphalt mixture of the rubber powder asphalt; and a directional conveying system is arranged below the microwave resonant cavity, can be connected with the microwave resonant cavity, and can convey the rubber powder asphalt mixed liquid in the low-temperature area in the microwave resonant cavity to the high-temperature area to perform temperature compensation radiation on the low-temperature rubber powder asphalt mixed liquid.
2. The activated desulfurized rubber powder modified asphalt production device according to claim 1, wherein: the stirring mechanism comprises a stirring shaft and stirring blades on the surface of the stirring shaft, the stirring shaft comprises a hollow metal shaft and a temperature measuring element inside the hollow metal shaft, the temperature measuring element comprises a heat-conducting medium material filled in the inner cavity of the hollow metal shaft and a transmission optical fiber, and the transmission optical fiber penetrates through the central part of the heat-conducting medium material; the temperature measurement device is characterized in that a plurality of temperature measurement points are arranged on the transmission optical fiber at intervals, the transmission optical fiber extends to the outside of the stirring shaft, the tail end of the transmission optical fiber is connected with the temperature measurement module through the rotary connector, the temperature measurement module is connected with the upper computer, and the upper computer is used for displaying, storing and controlling.
3. The activated desulfurized rubber powder modified asphalt production device according to claim 2, characterized in that: the rotary connector comprises an inner ring and an outer ring, the inner ring is fixed at the end part of the transmission optical fiber, and the excircle of the inner ring is matched with the inner hole of the outer ring; the outer ring is connected with the temperature measuring module through a signal output line; the temperature measurement module converts the temperature analog signal into a digital signal, and then transmits the digital signal to the upper computer for display, storage and control.
4. The activated desulfurized rubber powder modified asphalt production device according to claim 2, characterized in that: a plurality of stirring shafts are arranged in parallel at the lower part of the microwave resonant cavity, temperature measuring points on each stirring shaft are uniformly distributed, and a plurality of temperature measuring areas are formed by taking the temperature measuring points as centers; the microwave resonant cavity is internally divided into a plurality of temperature measuring units along the length direction, and each temperature measuring unit comprises a plurality of temperature measuring areas.
5. The activated desulfurized rubber powder modified asphalt production device according to claim 4, wherein: the directional conveying system comprises two walking trolleys, a jet pump, a low-pressure suction pipe and a high-pressure jet pipe, wherein the low-pressure suction pipe and the high-pressure jet pipe are respectively connected with an inlet and an outlet of the jet pump, the number of the walking trolleys is two, an input connector of the low-pressure suction pipe and an output connector of the high-pressure jet pipe are respectively connected with electromagnetic butt joint pipe male heads on the two walking trolleys, a plurality of electromagnetic butt joint pipe female heads are arranged at the bottom of the microwave resonant cavity and correspond to temperature measuring points on the stirring shaft one by one, and the electromagnetic butt joint pipe male heads on the walking trolleys can be respectively butted with the electromagnetic butt joint pipe female heads.
6. The activated desulfurized rubber powder modified asphalt production device according to claim 5, wherein: tracks are arranged below the microwave resonant cavity, the tracks are arranged in a row-column matrix, and the intersection points of the tracks correspond to the temperature measuring points one by one; after being positioned by the laser range finder, the walking trolley can move to the position right below a target temperature measuring area along a track, so that male ends of electromagnetic butt-joint pipelines at the input joint and the output joint are matched with a female end of an electromagnetic butt-joint pipeline at the bottom of the microwave resonant cavity.
7. The activated desulfurized rubber powder modified asphalt production device according to claim 6, wherein: the electromagnetic butt joint pipeline female head comprises a valve body and a valve core, the valve body is fixed on a bottom plate of the microwave resonant cavity, the valve core is arranged in the valve body, the valve core is connected with an inner cavity of the valve body through a spring, a discharge hole of the valve body and a throttling surface matched with the valve core are conical surfaces, and an electromagnetic coil is arranged on the outer wall of the valve body; the lower end of the valve body is provided with a double-layer sleeve, a sealing ring is arranged on the matching surface of an inner cavity of the double-layer sleeve, and the lower end of the double-layer sleeve is butted with the valve body of the electromagnetic butt joint pipeline male head and a guide sleeve outside the valve body; and a valve rod extending to the lower part of the throttling surface is arranged at the lower end of the valve core.
8. The activated desulfurized rubber powder modified asphalt production device according to claim 7, wherein: the platform of the walking trolley is of a hollow structure, a connecting hole for butt joint with a male head of the electromagnetic butt joint pipeline is formed in the platform, a guide sleeve is arranged on the upper surface of the walking trolley and arranged outside the connecting hole, and the male head of the electromagnetic butt joint pipeline is arranged in the guide sleeve; the electromagnetic butt joint device is characterized in that a corrugated pipe is installed in the connecting hole, the upper end of the corrugated pipe is in butt joint with the lower end of a male head of an electromagnetic butt joint pipeline, and the lower end of the corrugated pipe can be connected with the upper end of an input connector or an output connector.
9. The activated desulfurized rubber powder modified asphalt production device according to claim 8, wherein: the electromagnetic butt joint pipeline male head comprises a valve body and a valve core, the valve core is arranged inside the valve body, the lower end of the valve core is connected with an inner cavity of the valve body through a spring, a throttling surface of a feed port of the valve body, which is matched with the valve core, is a conical surface, and an electromagnetic coil is arranged on the outer wall of the valve body; the upper part of the valve body can be inserted into the double-layer sleeve at the lower end of the valve body and sealed; and a valve rod extending to the upper part of the throttling surface is arranged at the upper end of the valve core.
10. The activated desulfurized rubber powder modified asphalt production device according to claim 9, wherein: the matching process of the electromagnetic butt joint pipeline male head and the electromagnetic butt joint pipeline female head is as follows:
when the travelling trolley moves to a target position, the electromagnetic coils of the electromagnetic butt joint pipeline female head and the electromagnetic butt joint pipeline male head are simultaneously electrified, the polarities are opposite, attraction force is generated, under the action of the attraction force, the electromagnetic butt joint pipeline male head moves upwards and is matched and connected with the electromagnetic butt joint pipeline female head, the electromagnetic butt joint pipeline female head abuts against a valve rod of the electromagnetic butt joint pipeline female head, a spring is pressed, throttling surfaces of the electromagnetic butt joint pipeline male head and the electromagnetic butt joint pipeline female head are opened, and the electromagnetic butt joint pipeline male head is communicated with a pipeline of the electromagnetic butt joint pipeline female head;
when the temperatures of the cold temperature measuring area and the high temperature measuring area reach the average temperature, the current direction of the electromagnetic coils of the male heads of the electromagnetic butt-joint pipelines is changed, the polarities are the same, repulsive force is generated, and the male heads of the electromagnetic butt-joint pipelines move downwards under the action of the repulsive force and are disconnected with the female heads of the electromagnetic butt-joint pipelines; meanwhile, the valve cores of the electromagnetic butt joint pipeline male head and the electromagnetic butt joint pipeline female head extend outwards under the elastic force action of the spring, and the outlet of the valve body is sealed by the throttling surface, so that fluid in the microwave resonant cavity, the input connector and the output connector pipeline cannot flow out.
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| CN202110963792.2A CN113694857A (en) | 2021-08-21 | 2021-08-21 | Device for producing activated desulfurized rubber powder modified asphalt |
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| CN202110963792.2A CN113694857A (en) | 2021-08-21 | 2021-08-21 | Device for producing activated desulfurized rubber powder modified asphalt |
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| CN102401703A (en) * | 2011-08-23 | 2012-04-04 | 北京东方锐择科技有限公司 | Microwave temperature measurement system based on fluorescence fiber temperature measurement |
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