CN113736137B - Rubber powder desulfurization equipment for rubber asphalt production - Google Patents

Rubber powder desulfurization equipment for rubber asphalt production Download PDF

Info

Publication number
CN113736137B
CN113736137B CN202111136809.3A CN202111136809A CN113736137B CN 113736137 B CN113736137 B CN 113736137B CN 202111136809 A CN202111136809 A CN 202111136809A CN 113736137 B CN113736137 B CN 113736137B
Authority
CN
China
Prior art keywords
ultrasonic
rubber
stirring
asphalt
cylinder body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111136809.3A
Other languages
Chinese (zh)
Other versions
CN113736137A (en
Inventor
王国清
张庆
刘延雷
杨龙
李硕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Jiaotou Special Materials Technology Co ltd
Hengshui Hengfeng Yick Road Asphalt Science & Technology Co ltd
Original Assignee
Hebei Jiaotou Special Materials Technology Co ltd
Hengshui Hengfeng Yick Road Asphalt Science & Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei Jiaotou Special Materials Technology Co ltd, Hengshui Hengfeng Yick Road Asphalt Science & Technology Co ltd filed Critical Hebei Jiaotou Special Materials Technology Co ltd
Priority to CN202111136809.3A priority Critical patent/CN113736137B/en
Publication of CN113736137A publication Critical patent/CN113736137A/en
Application granted granted Critical
Publication of CN113736137B publication Critical patent/CN113736137B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2319/00—Characterised by the use of rubbers not provided for in groups C08J2307/00 - C08J2317/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

The utility model discloses rubber powder desulfurization equipment for producing rubber asphalt, which belongs to the technical field of rubber asphalt production equipment and comprises a cylinder body, wherein the top of the cylinder body is provided with an asphalt inlet, a rubber particle inlet, a waveguide tube and a stirring motor, and the stirring motor drives a stirring shaft in the cylinder body to rotate through a speed reducer; the bottom of the cylinder body is provided with a material output device, the upper part of the cylinder body is provided with an exhaust pipe, and the side wall of the cylinder body is provided with an ultrasonic vibration device. Asphalt and rubber particles are injected into the cylinder, the stirring motor drives the stirring shaft to rotate for mechanical stirring, the ultrasonic waves emitted by the ultrasonic vibration device are utilized for further stirring the internal materials, the phenomena of wall hanging and adhesion of the rubber particles can be effectively avoided, and the desulfurization effect of rubber powder is better; meanwhile, rubber particles are desulfurized by utilizing ultrasonic waves and microwaves led in by a waveguide tube, so that the desulfurization efficiency is accelerated; the material output device can accelerate the discharging speed and improve the production efficiency. The utility model has the advantages of simple and compact structure, low manufacturing cost, high automation level and convenient and quick operation.

Description

Rubber powder desulfurization equipment for rubber asphalt production
Technical Field
The utility model belongs to the technical field of rubber asphalt production equipment, and particularly relates to rubber powder desulfurization equipment for rubber asphalt production.
Background
Rubber desulfurization means that S-S bonds and S-C bonds in rubber molecules are subjected to bond breaking reaction by using a technical means, so that a three-dimensional network structure in vulcanized rubber is damaged, and the elastic vulcanized rubber is changed into reclaimed rubber with plasticity. At present, the rubber desulfurization method is mainly divided into a physical method and a chemical method, wherein the physical method has the characteristics of small influence on environment, low cost and the like because of mass production. At present, although a number of desulfurization apparatuses have been proposed, there are a number of disadvantages.
Patent (CN 1733443 a) is a "technology and method for continuously treating the surface of waste rubber with microwaves" proposed by korean modern automotive co. The utility model puts the quantitative rubber powder on the belt conveyor to make the rubber powder move forward and send into the microwave resonant cavity, and the desulfurization process is completed by utilizing microwave radiation, but the method has complex flow, more needed equipment and high investment production cost.
Patent (CN 102634056A) proposes to continuously add rubber powder to the belt conveyor, and the conveyer belt conveys rubber powder forward, and the conveyer belt top adds the radiation microwave source, accomplishes the desulfurization process through the heating of microwave source, and the reclaimed rubber of output is transported to the cooling chamber cooling, and the cooling is accomplished the back and is sent to the rubber mixing workshop again, but whole equipment structure is complicated, and the difficulty of putting into practice is great. And the conveyer belt of the belt conveyer is frequently subjected to microwave heating and freezing of a cooling chamber, the alternation of cold and hot is frequent, the service life of the conveyer belt can be greatly shortened, and the reliability of the whole machine is further affected.
The utility model patent (CN 203582776U) proposes to replace a belt conveyor with a screw conveyor, and an outer pipeline of the screw conveyor adopts a high-strength silicon ceramic pipeline, so that the reliability of the device is effectively improved, and the complexity of the device is reduced. However, the method has the defects that firstly, the manufacturing difficulty of the high-strength ceramic pipeline required by the screw conveyor is high; secondly, the device is difficult to meet the aim of treating rubber powder in a large amount.
In summary, the existing equipment for rubber desulfurization has certain problems to a greater or lesser extent, and mainly has the following points of high equipment complexity, difficult implementation, high cost, high processing difficulty of key parts of the equipment, low automation level and the like. The novel rubber desulfurization equipment provided by the utility model can effectively solve the problems.
Disclosure of Invention
The utility model aims to provide rubber powder desulfurization equipment for rubber asphalt production, and aims to solve the technical problems of high equipment complexity, low automation level, overhigh cost, difficult implementation and high processing difficulty of key parts in the rubber desulfurization equipment in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the rubber powder desulfurization equipment for producing rubber asphalt comprises a cylinder for containing asphalt and rubber particles, wherein an asphalt inlet, a rubber particle inlet, a waveguide tube and a stirring motor are arranged at the top of the cylinder, and the stirring motor drives a stirring shaft in the cylinder to rotate through a speed reducer; the bottom of the cylinder body is provided with a material output device, and the upper part of the cylinder body is provided with an exhaust pipe; the side wall of the cylinder body is provided with an ultrasonic vibration device.
Preferably, the speed reducer is a coaxial double-output planetary gear speed reducer, an output shaft of the speed reducer is of a coaxial double-output structure, the output shaft is coaxially fixed with a stirring shaft, the stirring shaft comprises an inner shaft and an outer shaft which are different in steering, the lower part of the inner shaft extends to the lower part of the outer shaft, and an end cover is arranged at the lower end of the outer shaft and is in running fit with the inner shaft through a bearing; and paddles are arranged on the outer walls of the lower ends of the outer shaft and the inner shaft.
Preferably, the stirring motors are multiple, and the rotation directions of the adjacent stirring motors are opposite.
Preferably, the inner wall of the cylinder is provided with a temperature detection device, the temperature detection device comprises a pulse ultrasonic wave transmitting device and an ultrasonic wave receiving device which are symmetrically arranged on the side wall of the cylinder, the ultrasonic wave receiving device can receive a pulse signal sent by the pulse ultrasonic wave transmitting device and can detect the time required for the pulse signal to pass through the internal rubber powder asphalt mixture, and the asphalt temperature is detected by utilizing the conduction speed of ultrasonic waves in the rubber powder asphalt mixture.
Preferably, the process of detecting the temperature of the material in the cylinder body by the temperature detecting device is as follows:
fitting the speed and temperature data to obtain the equation of the conduction speed of ultrasonic wave in asphalt along with the temperature change, wherein the equation is that
v＝a(T-10) 2 +b(T-10)+1506 (1)
In the formula (1), a is a quadratic coefficient of temperature, and the value range is-0.04 to-0.032;
b is a primary coefficient of temperature, and the value range is 4.32-4.86;
v is the transmission speed of ultrasonic waves, in m/s;
t is the temperature of the rubber powder asphalt mixture, and the unit is the temperature;
wherein, the transmission speed of the ultrasonic wave also satisfies the following formula:
v＝S/t (2)
in the formula (2), S is the distance between the pulse ultrasonic wave transmitting device and the ultrasonic wave receiving device, and the unit is m;
t is the time in s required for the ultrasonic signal to be transmitted from the pulsed ultrasonic transmitter to the ultrasonic receiver.
The temperature detection device can measure the time t required by ultrasonic signals to be transmitted to the receiver, and the time t is substituted into the formula (1) and the formula (2) to obtain the temperature formula of the rubber powder asphalt mixture in the cylinder body, wherein the temperature formula is as follows:
preferably, the exhaust pipe is connected with the gas recovery device through an air pump, a gas return pipe is arranged at the bottom of the gas recovery device, and the gas return pipe is connected with the cylinder through a gas diverter.
Preferably, a gas detection device is arranged on the exhaust pipe, and the gas detection device is arranged between the cylinder body and the air pump.
Preferably, the ultrasonic vibration device comprises an ultrasonic vibrator and an ultrasonic generator, wherein the ultrasonic vibrator is arranged on the outer wall of the cylinder body, and the ultrasonic vibrator is connected with the ultrasonic generator.
Preferably, a plurality of ultrasonic sensors are arranged in the cylinder along the direction of the stirring shaft, the transmitters and the receivers of the ultrasonic sensors are respectively and correspondingly arranged on the top and bottom inner walls of the cylinder, and ultrasonic transmission lines formed by a plurality of groups of transmitters and receivers are respectively and correspondingly arranged in material areas taking a plurality of stirring shafts as the center; when the ultrasonic sensor is used for detection, the stirring shaft stops rotating at a certain angle, so that the stirring blades on the stirring shaft do not influence the transmission of ultrasonic waves in the rubber powder asphalt mixture;
the ultrasonic sensor generates waveform diagrams on an oscilloscope, and judges whether the distribution of the rubber powder in the asphalt medium is uniform or not by comparing time and amplitude values in the waveform diagrams; when the waveform diagram shows that the amplitude of the first wave is large, the pulse width is uniform, the frequency is stable, and the amplitude of each wave is stable, the distribution uniformity of the rubber powder in the area is better; when the waveform diagram shows that the amplitude of the first wave is smaller than that of the normal wave band and the frequency is unstable, the amplitude of each wave band is obviously different, the distribution uniformity of the rubber powder in the area is poor, the stirring motor corresponding to the area is started, and the stirring speed is accelerated.
Preferably, the material output device comprises a material discharge pipe and a screw conveyer, wherein the material discharge pipe is connected with a discharge hole at the bottom of the cylinder body through a pneumatic valve, and the discharge hole of the material discharge pipe is connected with a feed inlet of the screw conveyer.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in: compared with the prior art, asphalt and rubber particles are injected into the cylinder, microwaves are introduced by utilizing the waveguide, the stirring shaft in the cylinder is driven by the top stirring motor through the speed reducer to rotate to realize mechanical stirring, meanwhile, the ultrasonic waves emitted by the ultrasonic vibration device on the side wall of the cylinder are utilized to further stir internal materials, so that the internal materials are ensured to be stirred more uniformly, the wall hanging and bonding phenomena of the rubber particles can be effectively avoided, and the desulfurization effect of rubber powder is better; meanwhile, rubber particles in the material can be further desulfurized by ultrasonic waves, so that the desulfurization efficiency is improved; the discharging speed can be increased through the material output device at the bottom of the cylinder body, and the production efficiency is improved. The utility model has the advantages of simple and compact structure, low manufacturing cost, high automation level, convenient and quick operation and convenient popularization and application; and simultaneously, the desulfurization effect of the rubber powder is further improved by combining an ultrasonic sensing technology.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic structural view of a rubber powder desulfurization apparatus for rubber asphalt production according to an embodiment of the present utility model;
FIG. 2 is a top plan view of a cartridge in one embodiment of the utility model;
FIG. 3 is a partial block diagram of a stirring shaft in one embodiment of the utility model;
FIG. 4 is a diagram showing the arrangement of ultrasonic vibrators around a cylinder and a gas return pipe in an embodiment of the utility model;
FIG. 5 is a diagram showing the arrangement of temperature detecting devices around the cylinder according to the embodiment of the present utility model;
FIG. 6 is a schematic view of the placement of the transmitter and receiver of an ultrasonic sensor inside a cylinder in an embodiment of the utility model;
in the figure: 1-a cylinder; 2-rubber particle inlet; 3-a stirring motor; 4-waveguide; 5-a speed reducer; 6-asphalt inlet; 7-a gas detection device; 8-an air pump; 9-a gas recovery treatment device; 10-gas return pipe; 11-a gas diverter; 12-a material discharging motor; 13-screw conveyor; 14-a material discharge pipe; 15-pneumatic valve; 16-a temperature detection device; 17-an ultrasonic vibrator; 18-a stirring shaft; 19-an ultrasonic generator; 161-pulse ultrasonic wave generating means; 162-ultrasonic wave receiving means; 181-paddles; 182-an outer shaft; 183-bearings; 184-end cap; 185-an inner shaft; 20-exhaust pipe; 21-transmitter, 22-receiver.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the rubber powder desulfurization device for producing rubber asphalt provided by the utility model comprises a cylinder 1 for containing asphalt and rubber particles, wherein an asphalt inlet 6, a rubber particle inlet 2, a waveguide tube 4 and a stirring motor 3 are arranged at the top of the cylinder 1, and the stirring motor 3 drives a stirring shaft 18 in the cylinder 1 to rotate through a speed reducer 5; the bottom of the cylinder body 1 is provided with a material output device, and the upper part of the cylinder body 1 is provided with an exhaust pipe 20; the side wall of the cylinder body 1 is provided with an ultrasonic vibration device. The stirring shaft rotates to mechanically stir, meanwhile, ultrasonic waves emitted by the ultrasonic vibration device further stir internal materials, so that the materials are stirred more uniformly, the phenomena of wall hanging and bonding of rubber particles are avoided, and the rubber powder desulfurization effect is better; and when the microwave is activated, the ultrasonic waves are utilized to assist in desulfurization of rubber particles in the material, so that desulfurization efficiency is accelerated.
In one embodiment of the present utility model, as shown in fig. 1 and 3, the speed reducer 5 is a coaxial dual-output planetary gear speed reducer, the output shaft of the speed reducer 5 is of a coaxial dual-output structure, the output shaft is coaxially fixed with the stirring shaft 18, the stirring shaft 18 comprises an inner shaft 185 and an outer shaft 182 with different directions, the lower part of the inner shaft 185 extends below the outer shaft 182, and an end cover 184 is arranged at the lower end of the outer shaft 182 and is in rotating fit with the inner shaft 185 through a bearing 183; the outer shaft 182 and the outer wall of the lower end of the inner shaft 185 are provided with paddles 181. Wherein, the stirring motors 3 are a plurality of, and the rotation directions of the adjacent stirring motors 3 are opposite. The adjacent stirring motors are different in steering, and meanwhile, the inner shaft 185 and the outer shaft 182 which are coaxial and double in output are also different in steering, so that materials in the cylinder body 1 can be uniformly stirred.
In a specific design, the number of the waveguide tubes and the stirring motors in the embodiment shown in fig. 2 is 4, the number of the rubber particle inlets 2 and the number of the asphalt inlets 6 are respectively one, and a specific layout on the cylinder is shown in fig. 2.
Preferably, the inner wall of the cylinder 1 is provided with a temperature detecting device 16, the temperature detecting device comprises a pulse ultrasonic wave transmitting device 161 and an ultrasonic wave receiving device 162 which are symmetrically arranged on the side wall of the cylinder 1, the ultrasonic wave receiving device 162 can receive a pulse signal sent by the pulse ultrasonic wave transmitting device 161, can detect the time required for the pulse signal to pass through the internal rubber powder asphalt mixture, and detects the asphalt temperature by utilizing the conduction speed of ultrasonic waves in the rubber powder asphalt mixture.
Preferably, the process of detecting the temperature of the material in the barrel 1 by the temperature detecting device 16 is as follows:
fitting the speed and temperature data to obtain the equation of the conduction speed of ultrasonic wave in asphalt along with the temperature change, wherein the equation is that
v＝a(T-10) 2 +b(T-10)+1506 (1)
In the formula (1), a is a quadratic coefficient of temperature, and the value range is-0.04 to-0.032;
b is a primary coefficient of temperature, and the value range is 4.32-4.86;
v is the transmission speed of ultrasonic waves, in m/s;
t is the temperature of the rubber powder asphalt mixture, and the unit is the temperature;
wherein, the transmission speed of the ultrasonic wave also satisfies the following formula:
v＝S/t (2)
in the formula (2), S is the distance between the pulse ultrasonic wave transmitting device and the ultrasonic wave receiving device, and the unit is m;
t is the time in s required for the ultrasonic signal to be transmitted from the pulsed ultrasonic transmitter to the ultrasonic receiver.
The temperature detection device can measure the time t required by ultrasonic signals to be transmitted to the receiver, and the time t is substituted into the formula (1) and the formula (2) to obtain the temperature formula of the rubber powder asphalt mixture in the cylinder body, wherein the temperature formula is as follows:
as shown in the formula (3), the temperature of the material in the cylinder can be obtained by the time required for the ultrasonic signal to be transmitted to the receiver. In specific applications, as shown in fig. 5, the pulse ultrasonic wave transmitting device 161 transmits a pulse signal every 0.5 seconds, and the ultrasonic wave receiving device 162 detects the time required for the pulse signal to reach, and after the transmission speed of the ultrasonic wave is obtained, the temperature of the material can be further obtained, so as to determine the desulfurization condition.
In one embodiment of the present utility model, as shown in fig. 1 and 4, the exhaust pipe 20 is connected to the gas recovery device 9 through the air pump 8, a gas return pipe 10 is provided at the bottom of the gas recovery device 9, and the gas return pipe 10 is connected to the cylinder 1 through a gas diverter 11. The exhaust pipe 20 is provided with a gas detection device 7, and the gas detection device 7 is arranged between the cylinder 1 and the air pump 8. The gas detection device can adopt a gas detector, and the gas detection device 7 can collect asphalt steam in the gas in the cylinder 1 and sulfide generated by desulfurization on the one hand, and can detect the sulfide content in the gas flowing in unit time on the other hand, so as to help judge the desulfurization process. If the desulfurization is completed, discharging the materials out of the cylinder body through a material output device; after all materials are discharged, the asphalt inlet 6 and the rubber particle inlet 2 are opened for the next round of desulfurization.
As shown in fig. 4, the gas return pipe 10 surrounds the cylinder and is communicated with the cylinder through 4 gas diverters 11 on the side wall; the flow rate of the return gas is controlled by the gas splitter 11. The structure and working principle of the gas splitter 11 and the gas recovery processing device 9 belong to the prior art, and are not described here in detail. The gas recovery processing device mainly removes asphalt steam and sulfide in the air through means of condensation, filtration, chemical reaction and the like, reduces the pollution to the environment, reduces the temperature of the gas, and the cooled gas can return to the cylinder body 1 through the bottom gas return pipe 10 and the gas splitter 11 to play roles of cooling and stirring.
Further optimizing the above technical scheme, as shown in fig. 1, the ultrasonic vibration device includes ultrasonic vibrator 17 and ultrasonic generator 19, ultrasonic vibrator 17 sets up on the outer wall of barrel 1, ultrasonic vibrator 17 links to each other with ultrasonic generator 19. The material in the cylinder body 1 is subjected to vibration stirring through ultrasonic waves, so that rubber particles vibrate, adverse phenomena such as adhesion and wall hanging of the rubber particles are avoided, and meanwhile, the ultrasonic waves can assist in desulfurization of the rubber particles in the material, so that desulfurization effect is enhanced.
In one embodiment of the present utility model, as shown in fig. 6, a plurality of ultrasonic sensors are disposed in the cylinder 1 along the stirring axis direction, and the transmitters 21 and the receivers 22 of the ultrasonic sensors are respectively disposed on the top and bottom inner walls of the cylinder 1, and the ultrasonic transmission lines formed by the plurality of sets of transmitters 21 and the receivers 22 respectively correspond to the material areas centered on the plurality of stirring axes; when the ultrasonic sensor is used for detection, the stirring shaft stops rotating at a certain angle, so that the stirring blades on the stirring shaft do not influence the transmission of ultrasonic waves in the rubber powder asphalt mixture;
the ultrasonic sensor generates waveform diagrams on an oscilloscope, and judges whether the distribution of the rubber powder in the asphalt medium is uniform or not by comparing time and amplitude values in the waveform diagrams; when the waveform diagram shows that the amplitude of the first wave is large, the pulse width is uniform, the frequency is stable, and the amplitude of each wave is stable, the distribution uniformity of the rubber powder in the area is better; when the waveform diagram shows that the amplitude of the first wave is smaller than that of the normal wave band, the frequency is unstable, and the amplitude of each wave band is obviously different, the distribution uniformity of the rubber powder in the area is poor, the stirring motor corresponding to the area is started, and the stirring speed is accelerated
In one embodiment of the present utility model, as shown in fig. 1, the material output device includes a material discharge pipe 14 and a screw conveyor 13, where the material discharge pipe 14 is connected to a discharge port at the bottom of the barrel 1 through a pneumatic valve 15, and the discharge port of the material discharge pipe 14 is connected to a feed port of the screw conveyor 13. The screw conveyor 13 is driven by a motor, the pneumatic valve is a pneumatic butterfly valve, whether the material is discharged or not can be controlled, and the discharging speed of the material can be effectively controlled by using the screw conveyor.
In conclusion, the utility model has the advantages of simple and compact structure and high automation level, asphalt and rubber powder in the cylinder are mechanically stirred by the stirring shaft, the stirring shaft is further stirred by utilizing ultrasonic waves, the internal materials are ensured to be stirred more uniformly, the phenomenon of wall hanging and bonding of rubber particles can be avoided by the ultrasonic waves, meanwhile, the rubber particles are further desulfurized by the ultrasonic waves, and the desulfurization efficiency of the rubber powder is high. In addition, whether the distribution of the rubber powder in the asphalt medium is uniform or not is judged by utilizing the ultrasonic sensor arranged along the direction of the stirring shaft, and the distribution uniformity of the rubber powder is improved by the linkage of the ultrasonic sensor and the stirring motor, so that the desulfurization uniformity degree of the rubber powder is improved. The gelatin powder has better desulfurization effect and is convenient to popularize and apply.
In the foregoing description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed above.

Claims (7)

1. A rubber powder desulfurization equipment for rubber asphalt production which characterized in that: the asphalt and rubber particle stirring device comprises a cylinder body for containing asphalt and rubber particles, wherein an asphalt inlet, a rubber particle inlet, a waveguide tube and a stirring motor are arranged at the top of the cylinder body, and the stirring motor drives a stirring shaft in the cylinder body to rotate through a speed reducer; the bottom of the cylinder body is provided with a material output device, and the upper part of the cylinder body is provided with an exhaust pipe; the side wall of the cylinder body is provided with an ultrasonic vibration device; the speed reducer is a coaxial double-output planetary gear speed reducer, an output shaft of the speed reducer is of a coaxial double-output structure, the output shaft is coaxially fixed with a stirring shaft, the stirring shaft comprises an inner shaft and an outer shaft which are different in steering, the lower part of the inner shaft extends to the lower part of the outer shaft, and an end cover is arranged at the lower end of the outer shaft and is in running fit with the inner shaft through a bearing; the outer walls of the lower ends of the outer shaft and the inner shaft are respectively provided with a blade; the stirring motors are multiple, and the rotation directions of the adjacent stirring motors are opposite; the inner wall of barrel is equipped with temperature-detecting device, temperature-detecting device sets up pulse ultrasonic wave emitter and ultrasonic wave receiving arrangement on the barrel lateral wall including the symmetry, ultrasonic wave receiving arrangement can receive the pulse signal that pulse ultrasonic wave emitter sent to can detect pulse signal and pass inside rubber powder asphalt mixture required time, utilize the conduction velocity of ultrasonic wave inside rubber powder asphalt mixture to detect asphalt temperature.
2. The rubber powder desulfurization apparatus for rubber asphalt production according to claim 1, characterized in that: the process of detecting the material temperature in the cylinder body by the temperature detecting device is as follows:
fitting the speed and temperature data to obtain the equation of the conduction speed of ultrasonic wave in asphalt along with the temperature change, wherein the equation is that
v＝a(T-10) 2 +b(T-10)+1506 (1)
In the formula (1), a is a quadratic coefficient of temperature, and the value range is-0.04 to-0.032;
b is a primary coefficient of temperature, and the value range is 4.32-4.86;
v is the transmission speed of ultrasonic waves, in m/s;
t is the temperature of the rubber powder asphalt mixture, and the unit is the temperature;
wherein, the transmission speed of the ultrasonic wave also satisfies the following formula:
v＝S/t (2)
in the formula (2), S is the distance between the pulse ultrasonic wave transmitting device and the ultrasonic wave receiving device, and the unit is m;
t is the time required by the ultrasonic signal to be transmitted from the pulse ultrasonic transmitting device to the ultrasonic receiving device for receiving the ultrasonic signal, and the unit is s;
the temperature detection device can measure the time t required by ultrasonic signals to be transmitted to the receiver, and the time t is substituted into the formula (1) and the formula (2) to obtain the temperature formula of the rubber powder asphalt mixture in the cylinder body, wherein the temperature formula is as follows:
3. the rubber powder desulfurization apparatus for rubber asphalt production according to claim 1, characterized in that: the exhaust pipe is connected with the gas recovery device through an air pump, a gas return pipe is arranged at the bottom of the gas recovery device, and the gas return pipe is connected with the cylinder through a gas diverter.
4. A rubber powder desulfurization apparatus for rubber asphalt production according to claim 3, characterized in that: the exhaust pipe is provided with a gas detection device, and the gas detection device is arranged between the cylinder body and the air pump.
5. The rubber powder desulfurization apparatus for rubber asphalt production according to claim 1, characterized in that: the ultrasonic vibration device comprises an ultrasonic vibrator and an ultrasonic generator, wherein the ultrasonic vibrator is arranged on the outer wall of the cylinder body, and the ultrasonic vibrator is connected with the ultrasonic generator.
6. The rubber powder desulfurization apparatus for rubber asphalt production according to claim 1, characterized in that: a plurality of ultrasonic sensors are arranged in the cylinder along the direction of the stirring shafts, transmitters and receivers of the ultrasonic sensors are respectively and correspondingly arranged on the inner walls of the top and the bottom of the cylinder, and ultrasonic transmission lines formed by a plurality of groups of transmitters and receivers are respectively and correspondingly arranged in material areas taking a plurality of stirring shafts as the center; when the ultrasonic sensor is used for detection, the stirring shaft stops rotating at a certain angle, so that the stirring blades on the stirring shaft do not influence the transmission of ultrasonic waves in the rubber powder asphalt mixture;
the ultrasonic sensor generates waveform diagrams on an oscilloscope, and judges whether the distribution of the rubber powder in the asphalt medium is uniform or not by comparing time and amplitude values in the waveform diagrams; when the waveform diagram shows that the amplitude of the first wave is smaller than that of the normal wave band and the frequency is unstable, the amplitude of each wave band is obviously different, the distribution uniformity of the rubber powder in the area is poor, and the stirring motor corresponding to the area is started and the stirring speed is accelerated.
7. A rubber powder desulfurization apparatus for rubber asphalt production according to any one of claims 1 to 6, characterized in that: the material output device comprises a material discharge pipe and a screw conveyer, wherein the material discharge pipe is connected with a discharge hole at the bottom of the cylinder body through a pneumatic valve, and the discharge hole of the material discharge pipe is connected with a feed inlet of the screw conveyer.
CN202111136809.3A 2021-09-27 2021-09-27 Rubber powder desulfurization equipment for rubber asphalt production Active CN113736137B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111136809.3A CN113736137B (en) 2021-09-27 2021-09-27 Rubber powder desulfurization equipment for rubber asphalt production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111136809.3A CN113736137B (en) 2021-09-27 2021-09-27 Rubber powder desulfurization equipment for rubber asphalt production

Publications (2)

Publication Number Publication Date
CN113736137A CN113736137A (en) 2021-12-03
CN113736137B true CN113736137B (en) 2023-07-25

Family

ID=78741347

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111136809.3A Active CN113736137B (en) 2021-09-27 2021-09-27 Rubber powder desulfurization equipment for rubber asphalt production

Country Status (1)

Country Link
CN (1) CN113736137B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111909529A (en) * 2020-06-10 2020-11-10 北京克林泰尔环保科技有限公司 Desulfurized waste tire rubber powder crosslinked modified asphalt and preparation method thereof
CN113121873A (en) * 2021-05-06 2021-07-16 益路恒丰衡水沥青科技有限公司 Rubber asphalt production equipment based on activated rubber powder
CN113232212A (en) * 2021-05-08 2021-08-10 益路恒丰衡水沥青科技有限公司 Rubber asphalt production equipment based on microwave heating

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103418323B (en) * 2012-05-15 2016-01-20 嵩县开拓者钼业有限公司 Industrial microwave ultrasonic reactor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111909529A (en) * 2020-06-10 2020-11-10 北京克林泰尔环保科技有限公司 Desulfurized waste tire rubber powder crosslinked modified asphalt and preparation method thereof
CN113121873A (en) * 2021-05-06 2021-07-16 益路恒丰衡水沥青科技有限公司 Rubber asphalt production equipment based on activated rubber powder
CN113232212A (en) * 2021-05-08 2021-08-10 益路恒丰衡水沥青科技有限公司 Rubber asphalt production equipment based on microwave heating

Also Published As

Publication number Publication date
CN113736137A (en) 2021-12-03

Similar Documents

Publication Publication Date Title
CN113736137B (en) Rubber powder desulfurization equipment for rubber asphalt production
CN210700101U (en) Polymerization device is used in flocculating agent production
CN208699845U (en) A kind of full-automatic charging gear
CN206403047U (en) Shortbread type biscuit production line with oiling station
CN113318623B (en) Cleaning method and system of intensive mixer
CN215586049U (en) Processing equipment for quartz sand fracturing propping agent
CN203842535U (en) Self-absorption type mixer
CN108579596A (en) A kind of liquid material mixing apparatus
CN210994172U (en) Heating and stirring device
CN211471182U (en) Aerobic fermentation equipment
CN113185083A (en) Wet sludge dryer
CN206715920U (en) A kind of producing high-molecular studies synthesis stirring container
CN201670819U (en) Rubber devulcanization device
CN210252228U (en) Scale inhibitor production equipment for seawater desalination equipment
CN206519353U (en) Shortbread type biscuit production line
CN215593005U (en) Plasma gasification furnace
CN213447147U (en) Multifunctional traditional Chinese medicine fermentation device
CN111499478A (en) Powder explosive mixing device
CN219400020U (en) Raw material melting device for processing carbon black dispersing agent
CN1325151C (en) Densifying of a bulk particulate material
CN109342705A (en) Laboratory test operating method and its device are mixed and stirred in asphalt vibration
CN111233588B (en) Pneumatic continuous explosive mixing device for production of expanded explosives
CN213113223U (en) Feeding system of biomass fixed bed gasification furnace
CN212147000U (en) Aerated brick raw materials foaming device
CN211250541U (en) Foaming device for foamed light soil

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20230627

Address after: 053411 east of Tuan Village, qingliangdian Town, Wuyi County, Hengshui City, Hebei Province

Applicant after: Hengshui Hengfeng Yick Road Asphalt Science & Technology Co.,Ltd.

Applicant after: Hebei Jiaotou Special Materials Technology Co.,Ltd.

Address before: 053411 east of Tuan Village, qingliangdian Town, Wuyi County, Hengshui City, Hebei Province

Applicant before: Hengshui Hengfeng Yick Road Asphalt Science & Technology Co.,Ltd.

GR01 Patent grant
GR01 Patent grant