CN105949502B - Vertical self-pressurizing and heating regenerated rubber device - Google Patents
Vertical self-pressurizing and heating regenerated rubber device Download PDFInfo
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- CN105949502B CN105949502B CN201610511966.0A CN201610511966A CN105949502B CN 105949502 B CN105949502 B CN 105949502B CN 201610511966 A CN201610511966 A CN 201610511966A CN 105949502 B CN105949502 B CN 105949502B
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- 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
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- 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
- C08J2317/00—Characterised by the use of reclaimed rubber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention relates to a vertical self-pressurization temperature-rise regenerated rubber device, wherein a conical body of a conical main shaft is provided with a spiral groove from top to bottom, the interior of a main shaft sleeve is a conical cavity which contains the conical main shaft and has the same appearance with the conical main shaft, the top end of the main shaft sleeve is provided with a feeding hole, the lower end of the main shaft sleeve horizontally protrudes outwards to form an annular table body, the conical main shaft is sleeved in the main shaft sleeve, a gap between the conical main shaft and the main shaft sleeve is gradually reduced from top to bottom, the lower end of a temperature control cooling area in the main shaft sleeve is fixed on the annular table body, the temperature control cooling area in the main shaft sleeve is arranged outside the main shaft sleeve in a surrounding manner, a material distribution sheet is fixed at the top of the conical main shaft, and the lower end of the conical main shaft is connected with the upper end of a sizing material processor; and a sizing material cooling area is arranged at the lower part of the annular table body around the sizing material processor. The invention has the advantages of wide applicability, energy saving, low carbon, low production cost, convenient installation and maintenance, good safety, stable quality, high yield and no environmental pollution.
Description
Technical Field
The invention belongs to the field of rubber manufacturing, and particularly relates to a vertical self-pressurization and temperature rise rubber regeneration device.
Background
At present, three regenerated rubber manufacturing processes capable of realizing industrial production exist in China.
1: high-temperature high-pressure dynamic desulfurization: this technology began domestically in the last 90 th century. Is the most mature technology for the application of the reclaimed rubber in China at present. The process comprises the steps of mixing rubber powder, a softening agent, an activating agent and a filler according to a certain proportion, then sending the mixture into a high-temperature high-pressure devulcanizer, injecting water (steam), heating to 170-220 ℃, keeping the pressure between 1.5-2.2 MPa for 2.5 hours, then decompressing, taking out the devulcanized rubber powder, manually transporting the devulcanized rubber powder to a refiner, and repeatedly refining and flaking to obtain the regenerated rubber. The main equipment used in the regeneration process is a high-temperature high-pressure desulfurizing tank and a plurality of refiners. The regeneration principle is that the swelling and permeability of the softening agent are utilized, so that the regeneration agent enters the rubber particles and is subjected to chemical desulfurization regeneration under the action of high temperature, and the water vapor in the rubber particles can isolate air and prevent thermal oxidation aging. The method is the most mature and widely applied regeneration method in domestic technology at present. However, since desulfurization is carried out in a high-temperature and high-pressure desulfurization tank and the pressure is high, there is a risk of physical explosion if safety accessories for equipment are not complete, equipment is defective, the operation is not proper, process control is not good, and the like. High-temperature steam and heating oil are used in the process, if the operation is improper, the defects of equipment or pipelines are overcome, the process control is not favorable, protective articles for workers are not complete, and the danger of high-temperature scalding is possibly caused. The production raw material activating agent, the pine tar, the aromatic hydrocarbon oil and the like are all inflammable and easily-polluted substances, and if material leakage occurs, fire hazard can occur when the materials meet a fire source. And in the production process, stable steam pressure needs to be kept all the time, so that the support of a matched coal-fired boiler is needed, the energy consumption is high, the heat loss is large, and the emission of waste gas and waste residue is serious. When the desulfurized rubber powder is discharged, a large amount of sulfur dioxide and waste water are discharged, the environment is seriously polluted, and the operation working environment is extremely poor. In recent years governments have come to a gradual shut down, the business using this approach. In addition, the activating agent and the softening agent which are necessary for production are chemical raw materials, which pollute the environment and are harmful to the health of workers.
2: mechanical shear regenerative force-chemical regeneration method: the procedure of mechanochemical regeneration is that the regenerating agent (activating agent) and the waste rubber powder are uniformly mixed, then the mixture is repeatedly sheared in an open mill or an internal mixer, and the regenerated rubber is formed after the mixture is sliced. The regeneration method is not suitable for tread rubber regeneration, and has good regeneration effect on butyl rubber, chlorinated butyl rubber and ethylene propylene diene monomer. Because the three rubbers have small crosslinking density, the three rubbers can be regenerated by slightly shearing under the action of swelling of the softening agent. However, the method requires repeated shearing, and the labor intensity of workers is very high. The yield is low and the quality is very unstable. The regeneration effect is not obvious for the tire regenerated rubber with the largest demand. The popularization rate is not high.
3: high-temperature normal-pressure continuous extrusion shearing regeneration: the process includes conveying the pre-mixed grains to reaction area under the action of screw, desulfurizing and regenerating under the action of high temperature and powerful shearing, cooling in cooling area under the action of screw and discharging. However, this method also requires external energy sources such as steam or electric heat to heat and maintain the temperature, which results in extremely high energy consumption and high cost. Because of adopting the artificial mechanical control. Temperature and shear instability easily cause quality instability, and equipment damage.
Disclosure of Invention
The invention aims to provide a vertical self-pressurization and temperature rise reclaimed rubber device. The invention has the advantages of wide applicability, energy saving, low carbon, low production cost, convenient installation and maintenance, good safety, stable quality, high yield and no environmental pollution.
The technical scheme adopted by the invention is as follows:
a vertical self-pressurization temperature-rise regenerated rubber device comprises a conical main shaft, a main shaft sleeve, a feeding hole, a temperature control cooling area inside the main shaft sleeve, a material distribution pulling sheet, a material processor, a material cooling area, a material discharging hole and a driving device, wherein a spiral groove is formed in the conical body of the conical main shaft from top to bottom, a conical cavity which contains the conical main shaft and is consistent with the conical main shaft in shape is formed in the main shaft sleeve, the feeding hole is formed in the top end of the main shaft sleeve, the lower end of the main shaft sleeve protrudes horizontally outwards to form an annular table body, the conical main shaft is sleeved in the main shaft sleeve, a gap between the conical main shaft and the main shaft sleeve is gradually reduced from top to bottom, the lower end of the temperature control cooling area inside the main shaft sleeve is fixed on the annular table body, the temperature control cooling area inside the main shaft sleeve is arranged outside the main shaft sleeve in a surrounding manner, the material distribution pulling sheet is fixed on the top of the conical main shaft, and the lower end of the conical main shaft is connected with the upper end of the material processor and used for driving the conical main shaft and the material processor to rotate rapidly; the lower part of the annular table body is provided with a sizing material cooling area surrounding the sizing material processor, a gap between the sizing material cooling area and the sizing material processor is a sizing material area, a discharge hole is formed in one side of the sizing material cooling area and communicated with the sizing material area, and the sizing material processor rapidly rotates and simultaneously conveys sizing material particles to the discharge hole; the upper end surface of the sizing material processor and the lower end surface of the annular table body form a shearing working surface, the lower part of the sizing material processor is connected with the sizing material cooling area through a cover body, the sizing material processor is connected with the driving device through a transmission shaft, and the transmission shaft passes through the middle part of the cover body.
Further, still include preheating electric bar and temperature detector, it sets up inside along main shaft cover length direction to preheat the electric bar, and just preheats the one end of electric bar and stretch out outside the main shaft cover, temperature detector sets up inside along main shaft cover length direction, and the one end of temperature detector stretches out outside the main shaft cover.
The shearing device further comprises a numerical control unit, a pressure sensor, a current sensor and a hydraulic pressure regulator, wherein the pressure sensor is arranged on the shearing working surface, the current sensor is arranged on a motor on the driving device, the hydraulic pressure regulator is connected with the motor, and the pressure sensor and the current sensor are respectively connected with the numerical control unit and used for correcting working pressure and motor load; the numerical control unit is connected with the preheating electric heating rod and used for controlling the temperature inside the main shaft sleeve.
Furthermore, the rubber material processor is symmetrically provided with discharge pulling sheets in the circumferential direction and used for pulling rubber material particles to a discharge hole.
Furthermore, the driving device consists of a motor, a speed reducer and a transmission shaft, wherein the motor is connected with the speed reducer, and the speed reducer is connected with the sizing material processor through the transmission shaft.
Furthermore, the shearing device further comprises a numerical control unit, a pressure sensor and a current sensor, wherein the pressure sensor is arranged on the shearing working surface, the current sensor is arranged on a motor on the driving device, and the pressure sensor and the current sensor are respectively connected with the numerical control unit.
Further, the device comprises a graphite self-lubricating copper sleeve and a high-temperature and high-pressure resistant packing, wherein the graphite self-lubricating copper sleeve and the high-temperature and high-pressure resistant packing are sleeved at a lower clearance between the sizing material processor and the sizing material cooling area, and the graphite self-lubricating copper sleeve and the high-temperature and high-pressure resistant packing are sleeved between the cover body and the transmission shaft.
Compared with the prior art, the invention has the beneficial effects that: 1. the invention adopts a unique pressurizing and heating principle, so that the device only needs to be preheated by the electric heating rod when being started, and can keep the working temperature by means of the rotation friction of the device after reaching the working temperature. No boiler and electrical heating means are required to maintain the temperature. Low energy consumption, low carbon and environmental protection. 2. The device has wide applicability and obvious desulfurization and regeneration effects on various sizing materials. Most of the rubber materials can achieve the regeneration purpose without adding an activating agent and a softening agent. Reducing chemical pollution, improving working environment and reducing production cost. 3. The device has compact structure, small occupied area and convenient maintenance, and does not need other accessory parts. The installation and production cost is low. The computer numerical control system automatically controls key parameters, and the staff can easily get on the hands. 4. The device is very environment-friendly, the cooling water is recycled, the device has good sealing performance, and no waste water or waste gas is generated. 5. And (4) safety. Both high temperatures and high pressures occur at some locations within the device. The danger of explosion and explosion is avoided, the personnel can not be contacted with high temperature, and the danger of scalding is avoided.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in figure 1, the vertical self-pressurizing temperature-rising regenerated rubber device comprises a conical main shaft 1, a main shaft sleeve 2, a feeding hole 3, a main shaft sleeve internal temperature control cooling area 5, a material separating pull sheet 4, a rubber material processor 21, a rubber material cooling area 6, a discharging hole 7, a driving device, a preheating electric heating rod 8, a temperature detector 9, a numerical control unit, a pressure sensor, a current sensor, a hydraulic pressure regulator 10, a numerical control unit, a pressure sensor, a current sensor, a graphite self-lubricating copper sleeve 11 and a high-temperature and high-pressure resistant packing 12. A spiral groove 13 is formed in the conical body of the conical main shaft 1 from top to bottom, a conical cavity 14 which contains the conical main shaft 1 and is consistent with the conical main shaft 1 in shape is formed in the main shaft sleeve 2, a feeding hole 3 is formed in the top end of the main shaft sleeve 2, the lower end of the main shaft sleeve 2 horizontally protrudes outwards to form an annular table body 15, the conical main shaft 1 is sleeved in the main shaft sleeve 2, the gap between the conical main shaft 1 and the main shaft sleeve 2 is gradually reduced from top to bottom, the lower end of a temperature control cooling area 5 in the main shaft sleeve is fixed on the annular table body 15, the temperature control cooling area 5 in the main shaft sleeve is arranged outside the main shaft sleeve 2 in a surrounding mode, a material distribution pull piece 4 is fixed on the top of the conical main shaft 1, and the lower end of the conical main shaft 1 is connected with the upper end of a sizing material processor 21 and used for driving the conical main shaft 1 and the sizing material processor 21 to rotate quickly; the lower part of the annular table body 15 is provided with a sizing material cooling area 6 around the sizing material processor 21, a gap between the sizing material cooling area 6 and the sizing material processor 21 is a sizing material area 16, a discharge hole 7 is formed in one side of the sizing material cooling area 6, the discharge hole 7 is communicated with the sizing material area 16, and the sizing material processor 21 rapidly rotates and simultaneously conveys sizing material particles to the discharge hole 7; the upper end surface of the sizing material processor 21 and the lower end surface of the annular table body 15 form a shearing working surface 17, the lower part of the sizing material processor 21 is connected with the sizing material cooling area 6 through a cover body, the sizing material processor 21 is connected with the driving device through a transmission shaft 18, and the transmission shaft 18 passes through the middle part of the cover body.
The preheating electric heating rod 8 is arranged in the main shaft sleeve 2 along the length direction of the main shaft sleeve, one end of the preheating electric heating rod 8 extends out of the main shaft sleeve 2, the temperature detector 9 is arranged in the main shaft sleeve 2 along the length direction of the main shaft sleeve, and one end of the temperature detector 9 extends out of the main shaft sleeve 2.
The pressure sensor is arranged on the shearing working surface 17, the current sensor is arranged on a motor 19 on the driving device, the hydraulic pressure regulator 10 is connected with the motor 19, and the pressure sensor and the current sensor are respectively connected with the numerical control unit and used for correcting the working pressure and the load of the motor 19; the numerical control unit is connected with the preheating electric heating rod 8 and is used for controlling the temperature inside the main shaft sleeve 2.
The sizing material processor 21 is symmetrically provided with discharging pulling pieces in the circumferential direction and used for pulling the sizing material particles to the discharging port 7.
The driving device consists of a motor 19, a speed reducer 20 and a transmission shaft 18, wherein the motor 19 is connected with the speed reducer 20, and the speed reducer 20 is connected with a sizing material processor 21 through the transmission shaft 18.
The pressure sensor is arranged on the shearing working surface 17, the current sensor is arranged on a motor 19 on the driving device, and the pressure sensor and the current sensor are respectively connected with the numerical control unit.
A graphite self-lubricating copper bush 11 and a high-temperature and high-pressure resistant packing 12 are sleeved in a lower gap between the sizing material processor 21 and the sizing material cooling area 6, and the graphite self-lubricating copper bush 11 and the high-temperature and high-pressure resistant packing 12 are sleeved between the cover body and the transmission shaft 18.
When the desulfurization device works, rubber enters from a feeding hole in the top of the main shaft, and gradually moves downwards along the spiral groove under the action of rotation of the conical main shaft, the gap between the main shaft sleeve and the conical main shaft is gradually reduced as the conical main shaft is thickened, the pressure and the friction force borne by the rubber are also rapidly increased, and the severe friction causes the temperature of the rubber and a working surface to be continuously increased, so that the high temperature and the high pressure required by desulfurization are formed. The rubber material desulfurized at high temperature and high pressure can be changed into rubber strips along with the spiral grooves, then enters a shearing working surface formed by the end surface of the conical main shaft and the lower end surface of the main shaft sleeve, is changed into powder through strong shearing, is stirred into a discharge hole by a discharge stirring sheet, is cooled to normal temperature through a spiral cooling conveyor, and the desulfurization regeneration process is completed. The temperature sensor, the preheating electric heating rod and the pressure sensor of the shearing working surface are positioned in the main shaft sleeve, the current sensor of the main motor can input various data into the numerical control unit in real time, and the numerical control unit automatically controls the temperature rise of the preheating electric heating rod or the temperature of a working area controlled by injecting cooling water according to preset working parameters. And automatically controlling the hydraulic pressure regulator according to the pressure sensor and the current sensor, and correcting the working pressure and the motor load. The quality of desulfurization is guaranteed, and the motor is prevented from being burnt down due to overlarge load of the motor.
The invention has the advantages of wide applicability, energy saving, low carbon, low production cost, convenient installation and maintenance, good safety, stable quality, high yield and no environmental pollution.
Claims (4)
1. The vertical self-pressurization temperature-rise regenerated rubber device comprises a conical main shaft, a main shaft sleeve, a feeding hole, a temperature control cooling area inside the main shaft sleeve, a material distribution pulling sheet, a material sizing processor, a material sizing material temperature-reduction cooling area, a material discharging hole and a driving device, and is characterized in that a conical spiral groove is formed in the conical body of the conical main shaft from top to bottom, a conical cavity which contains the conical main shaft and is consistent with the conical main shaft in shape is formed in the main shaft sleeve, the feeding hole is formed in the top end of the main shaft sleeve, the lower end of the main shaft sleeve horizontally protrudes outwards to form an annular table body, the conical main shaft is sleeved in the main shaft sleeve, a gap between the conical main shaft and the main shaft sleeve is gradually reduced from top to bottom, the lower end of the temperature control cooling area inside the main shaft sleeve is fixed on the annular table body, the temperature control cooling area inside the main shaft sleeve is arranged outside the main shaft sleeve in a surrounding mode, the material distribution pulling sheet is fixed on the top of the conical main shaft, and the lower end of the material sizing material processor is connected with the upper end of the material sizing material processor and used for driving the conical main shaft and sizing material processor to rotate rapidly; the lower part of the annular table body is provided with a sizing material cooling area around the sizing material processor, a gap between the sizing material cooling area and the sizing material processor is a sizing material area, one side of the sizing material cooling area is provided with a discharge hole, the discharge hole is communicated with the sizing material area, and the sizing material processor rapidly rotates and simultaneously conveys sizing material particles to the discharge hole; the upper end surface of the sizing material processor and the lower end surface of the annular table body form a shearing working surface, the lower part of the sizing material processor is connected with the sizing material cooling area through a cover body, the sizing material processor is connected with the driving device through a transmission shaft, and the transmission shaft passes through the middle part of the cover body;
the rubber material processor is symmetrically provided with discharge pulling sheets in the circumferential direction and used for pulling rubber material particles to a discharge hole; the driving device consists of a motor, a speed reducer and a transmission shaft, wherein the motor is connected with the speed reducer, and the speed reducer is connected with the sizing material processor through the transmission shaft.
2. The vertical self-pressurizing temperature-raising reclaimed rubber device according to claim 1, further comprising a preheating electric heating rod and a temperature detector, wherein the preheating electric heating rod is arranged inside the main shaft sleeve along the length direction of the main shaft sleeve, one end of the preheating electric heating rod extends out of the main shaft sleeve, the temperature detector is arranged inside the main shaft sleeve along the length direction of the main shaft sleeve, and one end of the temperature detector extends out of the main shaft sleeve.
3. The vertical self-pressurizing temperature-rising reclaimed rubber device according to claim 2, further comprising a numerical control unit, a pressure sensor, a current sensor and a hydraulic pressure regulator, wherein the pressure sensor is arranged on the shearing working surface, the current sensor is arranged on a motor on the driving device, the hydraulic pressure regulator is connected with the motor, and the pressure sensor and the current sensor are respectively connected with the numerical control unit and used for correcting working pressure and motor load; the numerical control unit is connected with the preheating electric heating rod and used for controlling the temperature inside the main shaft sleeve.
4. The vertical self-pressurizing temperature-rising reclaimed rubber device according to claim 1, further comprising a graphite self-lubricating copper bush and a high-temperature and high-pressure resistant packing, wherein the graphite self-lubricating copper bush and the high-temperature and high-pressure resistant packing are sleeved in a lower gap between the sizing material processor and the sizing material cooling area, and the graphite self-lubricating copper bush and the high-temperature and high-pressure resistant packing are sleeved between the cover body and the transmission shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610511966.0A CN105949502B (en) | 2016-07-01 | 2016-07-01 | Vertical self-pressurizing and heating regenerated rubber device |
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| CN201610511966.0A CN105949502B (en) | 2016-07-01 | 2016-07-01 | Vertical self-pressurizing and heating regenerated rubber device |
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| CN105949502B true CN105949502B (en) | 2023-03-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3051990A (en) * | 1960-07-11 | 1962-09-04 | Us Rubber Reclaiming Co | Rubber reclaiming apparatus |
| CN101235161A (en) * | 2008-02-26 | 2008-08-06 | 刘昌志 | Rubber microwave regeneration linkage device |
| WO2011038576A1 (en) * | 2009-09-30 | 2011-04-07 | Chen Huihong | Thermal regeneration method of waste rubber |
| CN104890165A (en) * | 2015-05-13 | 2015-09-09 | 福建省邵武市恒晖橡胶再生有限公司 | Regenerated rubber formula test method, and regenerated rubber desulphurization machine |
-
2016
- 2016-07-01 CN CN201610511966.0A patent/CN105949502B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3051990A (en) * | 1960-07-11 | 1962-09-04 | Us Rubber Reclaiming Co | Rubber reclaiming apparatus |
| CN101235161A (en) * | 2008-02-26 | 2008-08-06 | 刘昌志 | Rubber microwave regeneration linkage device |
| WO2011038576A1 (en) * | 2009-09-30 | 2011-04-07 | Chen Huihong | Thermal regeneration method of waste rubber |
| CN104890165A (en) * | 2015-05-13 | 2015-09-09 | 福建省邵武市恒晖橡胶再生有限公司 | Regenerated rubber formula test method, and regenerated rubber desulphurization machine |
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| CN105949502A (en) | 2016-09-21 |
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