CN214060386U - Vulcanized rubber regeneration system - Google Patents
Vulcanized rubber regeneration system Download PDFInfo
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- CN214060386U CN214060386U CN202022222373.7U CN202022222373U CN214060386U CN 214060386 U CN214060386 U CN 214060386U CN 202022222373 U CN202022222373 U CN 202022222373U CN 214060386 U CN214060386 U CN 214060386U
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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 utility model discloses a vulcanized rubber regeneration system, which comprises a stirring temperature rising machine, wherein the stirring temperature rising machine is used for rising the temperature of vulcanized rubber powder, a softening agent and an activating agent to a preset temperature through stirring friction according to a preset proportion to obtain softened rubber powder; a cooling stirrer for cooling and stirring the softened rubber powder; the de-crosslinking host is used for further de-crosslinking the cooled and stirred rubber powder by utilizing mechanical shearing force; the outlet of the stirring and heating machine is connected with the inlet of the cooling stirrer, and the outlet of the cooling stirrer is connected with the inlet of the de-crosslinking host machine. According to the technical scheme, heating equipment is not required, the investment cost of the heating equipment and the corresponding energy consumption are avoided, the rubber regeneration process is simplified, and the regeneration efficiency of the waste vulcanized rubber is improved.
Description
Technical Field
The utility model belongs to the technical field of old and useless vulcanized rubber regeneration, in particular to vulcanized rubber regeneration system.
Background
The rubber which is processed by taking vulcanized waste materials in the production of rubber products as raw materials, has certain plasticity and viscosity and can be reused is called reclaimed rubber for short. The reclaimed rubber can partially replace the raw rubber to be used for rubber products, so that the raw rubber and the carbon black are saved, and the processability and certain properties of the rubber products are improved. The regeneration process is a process of breaking partial molecular chains and crosslinking points of vulcanized rubber by waste rubber under the combined action of a plasticizer, oxygen, heat and machinery.
Patent document CN201810804452.3 discloses a waste tire rubber treatment system and process, the technical scheme disclosed in the patent document includes process steps of mixing high stirring, heating and feeding, circulating heating, desulfurization and plasticization, cooling and discharging, refining and the like, and treatment systems corresponding to the process steps, the process and equipment are complex, the input cost is high, the energy consumption is high, and the rubber regeneration efficiency is low.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention discloses a rubber reclaiming system to overcome or at least partially solve the above problems.
In order to achieve the above object, the present invention provides a vulcanized rubber regeneration system, the system comprising: a feeding conveyor 1, a stirring and heating machine 2, a cooling stirrer 3, a power source 4 and a crosslinking-releasing main machine 5;
the feeding conveyor 1 is obliquely arranged and is used for conveying vulcanized rubber powder particles and desulfurization auxiliary agents including activating agents and softening agents into the stirring and heating machine 2;
the stirring and heating machine 2 is vertically arranged, and a discharge hole of the stirring and heating machine 2 is connected with a feed hole of the cooling stirrer 3; the stirring and heating machine 2 is internally provided with a shell and a stirring shaft arranged in the shell and used for stirring, rubbing and heating vulcanized rubber powder particles and desulfurization auxiliary agents including an activating agent and a softening agent which are conveyed by the feeding conveyor 1 to a preset temperature and then discharging the heated vulcanized rubber powder particles and the desulfurization auxiliary agents into the cooling stirrer 3; wherein, the stirring temperature rising machine 2 can realize the rotation speed of 100-;
the discharge hole of the cooling stirrer 5 is connected with the feeding hole of the de-crosslinking host 5; the cooling stirrer 3 is used for cooling and stirring the softened rubber powder and conveying the softened rubber powder to the crosslinking host 5;
the de-crosslinking host 5 comprises a shell and a rotating main shaft arranged in the shell; the rotary main shaft is driven to rotate by a power source 4, a plurality of disc cutters are arranged on the rotary main shaft, fixed cutters which are arranged in a cross mode with the disc cutters are arranged on the shell, and the rubber powder after cooling and stirring is further subjected to crosslinking decomposition by utilizing shearing force generated between the fixed cutters and the disc cutters.
Optionally, a feeding tray is arranged at the front end of the rotating main shaft, close to the feeding port.
Optionally, the system further comprises a cooling conveyor 6 and a refiner, the cooling conveyor 6 and the refiner are arranged behind the de-crosslinking host, a feed inlet is formed in one end, close to the de-crosslinking host 5, of the cooling conveyor 6, a discharge outlet is formed in the other end of the cooling conveyor 6, the refiner is arranged below the discharge outlet, a telescopic cylinder is arranged at the lower part of the cooling conveyor 6, and the inclined arrangement is realized through the telescopic cylinder; the cooling conveyor 6 is used for reducing the temperature of the rubber powder after the host computer 5 is de-crosslinked, and the refiner is used for refining and molding the cooled rubber powder.
Optionally, a waste gas outlet is arranged at a position, close to the discharge hole, on the upper part of the cooling conveyor 6, and a waste gas treatment system is connected to the waste gas outlet.
Optionally, the waste gas treatment system comprises a condenser and an oil-water separator.
The utility model has the advantages and beneficial effects that:
the above technical scheme of the utility model reach the temperature that rubber softening and rubber chemistry decrosslinked needs through the mode that friction stir heaied up, change traditional adoption direct heating's such as electric heating equipment mode. Compared with the traditional production line, on one hand, the electric heating equipment is not needed, and the equipment cost of production is reduced; on the other hand, the energy consumption of the friction heating mode is far lower than that of the traditional electric heating equipment, and the use cost of the equipment is reduced.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic flow chart of a rubber regeneration method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a rubber recycling system according to an embodiment of the present invention.
In the figure: 1 is a feeding conveyor, 2 is a stirring and heating machine, 3 is a cooling stirrer, 4 is a power source, 5 is a crosslinking-releasing main machine, and 6 is a cooling conveyor.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to perform clear and complete description of the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to overcome rubber regeneration equipment such as heating that exists among the prior art and drop into height, the big scheduling problem of energy resource consumption, the utility model provides a brand-new rubber regeneration technology and equipment need not traditional electrothermal equipment and can reach the required temperature of rubber chemistry solution cross-linking, has simplified equipment and technology, can show reduction equipment cost and use cost. The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
According to the flow diagram of the vulcanized rubber regeneration method shown in fig. 1, the embodiment specifically discloses a vulcanized rubber regeneration process, which specifically comprises the following steps:
and S110, heating vulcanized rubber powder, a softening agent and an activating agent to a preset temperature through stirring friction according to a preset proportion to obtain softened rubber powder. The rubber powder after being about to smash, softener and activator are thrown into stirring rising temperature device, stir, thereby realize heating and misce bene, wherein the proportion of each substance can be according to different needs preset, the temperature that the stirring heaied up also can set up according to rubber regeneration's practical use, through this step, make the rubber powder heat up to the required temperature of desulfurization rapidly, softener and activator permeate the rubber powder granule rapidly, soften the rubber powder, realize preliminary chemical desulfurization and dissolve the cross-linking.
In the embodiment, a stirring friction heating mode is adopted, the traditional direct heating mode of adopting an electric heating device and the like is changed, the temperature required by rubber softening and rubber chemical de-crosslinking is achieved only through the stirring friction heating mode, and compared with the traditional production line, on one hand, the electric heating device is not needed, and only the control mode and the stirring mode of a traditional stirring device which plays a role in uniformly mixing are improved, so that the equipment cost of production is reduced, and the equipment cost of hundreds of thousands of equipment can be reduced for a single production line; on the other hand, the energy consumption is far lower than that of the traditional electric heating equipment by adopting a friction heating mode, so that the use cost of the equipment is reduced; on the one hand, the production efficiency is greatly improved due to the shortened whole production flow.
In the above steps, the time and the rotation speed of stirring and heating are not particularly limited, and the corresponding preset temperature can be reached according to the product of the raw material or the desulfurization requirement.
The softening agent comprises one or more of coal tar, pine tar, petroleum softening agent, cracking slag oil and the like, and the activating agent comprises one or more of aromatic mercaptan and zinc salt thereof, aromatic disulfide, thiazole organic matter, diphenyl disulfide organic matter, thiophenol organic matter and the like.
And S120, cooling and stirring the softened rubber powder, so that the phenomenon that the internal temperature is increased due to the agglomeration of part of the rubber powder is avoided, and the phenomenon that the product quality is reduced due to the uneven overall temperature and reaction of the rubber powder is avoided. Specifically, the rubber powder mixture mixed and heated in the step S110 may be conveyed to a cooling and stirring device by using gravity or extrusion force for cooling and stirring, and heat preservation or cooling treatment, the rubber powder mixture after being heated may be kept to be continuously and uniformly mixed for a certain period of time, and may be broken up in time to form a mass, so as to avoid local temperature rise, keep the overall temperature of the rubber powder uniform and decrease along with the temperature, the specific stirring time and stirring process may be set as required, and the temperature of the rubber powder after being cooled is generally normal temperature to 200 ℃.
And S130, further performing crosslinking decomposition on the cooled and stirred rubber powder by using mechanical shearing force, thereby realizing the activation regeneration of the rubber powder. Specifically, the de-crosslinking stirring of the de-crosslinking host can be adopted, the softened rubber powder is further mechanically de-crosslinked by utilizing the shearing force between cutters in the de-crosslinking host, and the vulcanization crosslinking bond is further broken to realize activation and regeneration.
The process method disclosed by the scheme avoids the use of heating equipment and saves the production cost; energy consumption is reduced, and use cost is reduced; and the process steps are simplified, and the rubber regeneration efficiency is improved by 20-30%.
The utility model discloses a rubber regeneration method still includes to carry out refining treatment with the rubber powder after the activation regeneration, and the rubber powder after the activation regeneration is concise the shaping, then the packing warehouse entry.
In the specific regeneration implementation, the rotation speed of the friction stir heating is 100-.
Preferably, the rotation speed of the friction stir heating is 400-1200 rpm, so that the heating can be more rapidly realized. The preset temperature is preferably 180-260 ℃, so that better desulfurization and softening effects are obtained.
Preferably, the whole process is carried out under a closed condition, including friction stir heating in a closed environment or device, and similarly, when the rubber powder is cooled and stirred, the softened rubber powder is preferably cooled and stirred in a closed environment. The sealing condition is adopted, so that on one hand, the odor generated by high temperature of rubber can be prevented from diffusing to cause environmental pollution; on the other hand, the closed condition can generate steam at high temperature, thereby protecting the whole desulfurization process.
The mechanical de-crosslinking can be completed by the existing de-crosslinking host, and the vulcanization crosslinking bond in the rubber powder is cut off by the mechanical shearing force among a plurality of cutters, so that the main chain of the rubber is kept complete.
After the mechanical decrosslinking, the rubber powder also comprises the following components before being refined: and cooling the activated and regenerated rubber powder to 30-50 ℃. The cooling can be carried out synchronously with the conveying process and is realized by a spiral conveyor with a cooling jacket.
Example 2
Referring to FIG. 2, a schematic diagram of a vulcanized rubber recycling apparatus capable of implementing the process steps of FIG. 1 is shown. The vulcanized rubber regeneration equipment specifically comprises a feeding conveyor 1, a stirring and heating machine 2, a cooling and stirring machine 3, a power source 4, a crosslinking-releasing main machine 5 and a cooling conveyor 6.
According to fig. 2, feeding conveyor 1 sets up in an inclined way, preferably screw conveyer or pneumatic transport, it can accept the powdered rubber compound granule after smashing, then carry the powdered rubber compound granule and desulfurization auxiliary including activator and softener in stirring intensification machine 2, stirring intensification machine 2 can be vertically placed, be favorable to reducing agitated vessel's energy consumption, be provided with the casing in the stirring intensification machine 2 and set up the (mixing) shaft in the casing, the rubber powder constantly receives extrusion and friction intensification after getting into stirring intensification machine 2, reach after a period of time and predetermine the temperature in the back through gravity and extrusion force discharge to cooling mixer 3.
According to the requirement, the rotating speed during the temperature rise of the stirring friction is 100-1200 r/m, the preset temperature is 120-300 ℃, and the time of the stirring temperature rise is different from 6 minutes to 40 minutes. Preferably, the rotating speed of the stirring friction heating is 400-.
The cooling stirring machine 3 can continuously and uniformly mix the softened rubber powder and realize heat preservation or cooling, and can timely break up the lumps possibly formed in the rubber powder, so that the local temperature rise caused by the agglomeration of partial rubber powder is avoided, and the product quality is prevented from being reduced due to the non-uniform integral temperature and reaction of the rubber powder. The temperature of the rubber powder after cooling is normal temperature-200 ℃, the cooling stirrer 3 can also play a role in conveying the rubber powder mixture to the de-crosslinking host 5, and certainly, a special conveyor can be designed to realize the purpose of conveying.
The de-crosslinking host 5 is driven by a power source 4 matched with the corresponding motor through the motor, the power source is preferably a combination of the motor and a speed reducer, the de-crosslinking host 5 comprises a shell and a rotating main shaft arranged in the shell, the rotating main shaft is driven to rotate by the power source, a plurality of disc cutters are arranged on the rotating main shaft, fixed cutters which are arranged in a cross mode with the disc cutters are arranged on the shell, and the shearing force generated between the fixed cutters and the disc cutters is utilized, so that the vulcanized crosslinking bond is broken, the rubber main chain is guaranteed to be continuous, and the activation and regeneration of rubber powder are realized.
Preferably, a feeding plate is arranged at the position, close to the feeding hole, of the front end of the rotating main shaft, so that the rubber powder is extruded and conveyed. In this embodiment, through the rotational friction of pay-off dish and circular disc cutter, the temperature of rubber powder has obtained promoting again, is favorable to improving the effect of dissolving the crosslinking.
The rubber powder enters the cooling conveyor 6 after being processed by the de-crosslinking host 5, and the temperature is reduced to below 50 ℃, such as 30-50 ℃ by the cooling conveyor 6, so that the refining treatment is conveniently realized. The cooling conveyor 6 can be obliquely arranged, a spiral conveying mechanism is arranged in the cooling conveyor, a cooling jacket is arranged outside the shell, and the length of the cooling conveyor 6 and the temperature of the cooling jacket can be set according to requirements.
One end of the cooling conveyor 6 close to the main de-crosslinking machine 5 is provided with a feeding hole, the other end of the cooling conveyor is provided with a discharging hole, a refiner is arranged on the lower side of the discharging hole, and the lower part of the cooling conveyor 6 is provided with a telescopic cylinder which is arranged obliquely.
Preferably, the whole system is arranged in a closed manner, so that closed friction heating, closed cooling and the like are realized, and the odor generated by high temperature of rubber is prevented from diffusing to cause environmental pollution; in addition, steam can be generated at high temperature, so that the whole desulfurization process is protected. The upper portion of cooling conveyer 6 is provided with the exhaust outlet near the position of discharge gate, and exhaust outlet has exhaust treatment system through the pipe connection, and this exhaust treatment system includes condenser and oil water separator for the realization is handled waste gas condensation and oil water separation.
In conclusion, according to the technical scheme, heating equipment is not needed, the temperature required by rubber softening and chemical crosslinking release of rubber can be achieved only by means of mixing, stirring and friction heating, the investment cost and the corresponding energy consumption of the heating equipment are avoided, the rubber regeneration process is simplified, the rubber regeneration efficiency is improved, and the remarkable and unexpected technical effect is obtained.
The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.
Claims (5)
1. A vulcanized rubber recycling system, comprising: a feeding conveyor (1), a stirring and heating machine (2), a cooling stirrer (3), a power source (4) and a crosslinking-releasing main machine (5);
the feeding conveyor (1) is obliquely arranged and is used for conveying vulcanized rubber powder particles and desulfurization auxiliary agents including activating agents and softening agents into the stirring temperature rising machine (2);
the stirring and heating machine (2) is vertically arranged, and a discharge hole of the stirring and heating machine is connected with a feed hole of the cooling stirrer (3); a shell and a stirring shaft arranged in the shell are arranged in the stirring and heating machine (2) and are used for stirring, rubbing and heating vulcanized rubber powder particles conveyed by the feeding conveyor (1) and a desulfurization auxiliary agent comprising an activating agent and a softening agent to a preset temperature and then discharging the heated vulcanized rubber powder particles and the desulfurization auxiliary agent into the cooling and stirring machine (3); wherein the stirring temperature rising machine (2) can realize the rotation speed of 100-;
the discharge hole of the cooling stirrer (3) is connected with the feeding hole of the de-crosslinking host; the cooling stirrer (3) is used for cooling and stirring the softened rubber powder and conveying the softened rubber powder to the de-crosslinking host (5);
the de-crosslinking host (5) comprises a shell and a rotating main shaft arranged in the shell; the rotary main shaft is driven to rotate by a power source (4), a plurality of disc cutters are arranged on the rotary main shaft, fixed cutters which are arranged in a cross mode with the disc cutters are arranged on the shell, and the rubber powder after cooling and stirring is further subjected to crosslinking decomposition by utilizing shearing force generated between the fixed cutters and the disc cutters.
2. The system of claim 1, wherein a feed tray is disposed at the forward end of the rotating spindle proximate the feed inlet.
3. The system according to any one of claims 1-2, further comprising a cooling conveyor (6) and a refiner, wherein the cooling conveyor (6) and the refiner are arranged behind the de-crosslinking host, a feed inlet is arranged at one end of the cooling conveyor (6) close to the de-crosslinking host (5), a discharge outlet is arranged at the other end of the cooling conveyor, the refiner is arranged at the lower side of the discharge outlet, a telescopic cylinder is arranged at the lower part of the cooling conveyor (6), and the inclined arrangement is realized through the telescopic cylinder; the cooling conveyor (6) is used for reducing the temperature of the rubber powder after the host computer (5) is de-crosslinked, and the refiner is used for refining and molding the rubber powder after being cooled.
4. The system according to claim 3, characterized in that the upper part of the cooling conveyor (6) is provided with an exhaust gas outlet near the discharge hole, and an exhaust gas treatment system is connected to the exhaust gas outlet.
5. The system of claim 4, wherein the exhaust gas treatment system comprises a condenser and an oil-water separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022222373.7U CN214060386U (en) | 2020-09-30 | 2020-09-30 | Vulcanized rubber regeneration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022222373.7U CN214060386U (en) | 2020-09-30 | 2020-09-30 | Vulcanized rubber regeneration system |
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| CN214060386U true CN214060386U (en) | 2021-08-27 |
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| CN202022222373.7U Active CN214060386U (en) | 2020-09-30 | 2020-09-30 | Vulcanized rubber regeneration system |
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