High temperature and normal pressure continuous plasticizing system

Abstract

The present invention discloses a high-temperature, normal-pressure continuous plasticizing system, comprising a high-speed stirring plasticizing device, wherein the feeding end of the high-speed stirring plasticizing device is connected to a feeding device, and the discharging end of the high-speed stirring plasticizing device is connected to at least two dynamic heat-insulating plasticizing devices, wherein the high-speed stirring plasticizing device is arranged to discharge materials alternately to the dynamic heat-insulating plasticizing device, and the two dynamic heat-insulating plasticizing devices are commonly connected to a cooling discharging device. The mixed rubber material of the high-speed stirring plasticizing device of the present invention can be plasticized at high temperature for a relatively long time at each of the dynamic heat-insulating plasticizing devices, and the rubber powder is completely plasticized. The overall cost of the present invention is low, and the energy consumption is also low. The present invention can realize continuous batch plasticizing processing with high output.

Description

Technical Field

[0001] The invention relates to the technical field of rubber processing, and in particular to a high-temperature and normal-pressure continuous plasticizing system. Background Art

[0002] As a war material, rubber has a wide range of uses. With the development of society, the demand for rubber has increased rapidly. my country is a country with a large amount of rubber consumption. Natural rubber and synthetic rubber are far from meeting the actual needs. Therefore, the recycling of waste rubber has great economic and social significance.

[0003] At present, plasticizing and reducing waste rubber is one of the important ways to recycle waste rubber. Plasticizing waste rubber usually involves first cutting waste rubber into pieces and crushing them into rubber powder. Then, after pre-treatment, the rubber powder is mixed with additives, and the rubber powder and additives are plasticized at high temperature together. After cooling, the obtained rubber powder can be output as plasticized rubber powder with excellent performance. This processing process is equivalent to reducing the rubber powder of vulcanized rubber to the original rubber form before vulcanization. The obtained plasticized rubber powder can be used as a substitute for natural rubber and synthetic rubber and used in the production of various rubber products.

[0004] Among them, the plasticizing process is mainly to soften the rubber powder, and then break the sulfur bonds in the rubber powder and degrade the molecular external forces under the action of high temperature and strong crushing. Among them, it depends not only on additives and strong crushing, but also on continuous high temperature conditions. Continuous high temperature will promote the breaking of sulfur bonds from a wide angle, so that the rubber powder is completely plasticized. At present, the plasticizing process is mostly carried out by equipment with multiple spiral propulsion mechanisms connected end to end. A heating structure is laid outside the cylinder of each spiral propulsion structure, so that the rubber powder can be plasticized by the spiral rolling and high temperature during the spiral propulsion process. This technology heats up the rubber powder slowly, and the rubber powder will produce agglomeration and coking before reaching the ideal plasticizing temperature. In addition, the rubber powder is subject to the randomness of spiral rolling and the pushing path is long, so the rubber powder is prone to pseudo-plasticization, that is, the plasticization is uneven and incomplete. The performance of the plasticized rubber powder obtained in the end is not stable, and rebound phenomenon will occur. In addition, in order to pursue good plasticizing indicators, this technology often uses more spiral propulsion mechanisms in series. The overall cost and energy consumption of the equipment are high, and the output cannot meet expectations. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a high-temperature, normal-pressure continuous plasticizing system which has thorough plasticizing, low cost, low energy consumption, but high output.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a high-temperature and normal-pressure continuous plasticizing system, comprising a high-speed stirring plasticizing device, the feeding end of the high-speed stirring plasticizing device is connected to a feeding device, the discharging end of the high-speed stirring plasticizing device is connected to at least two dynamic heat preservation plasticizing devices, the high-speed stirring plasticizing device is arranged to discharge materials alternately to the dynamic heat preservation plasticizing device, and the two dynamic heat preservation plasticizing devices are commonly connected to a cooling discharging device.

[0007] As a preferred technical solution, the dynamic thermal insulation plasticizing equipment includes a thermal insulation bracket, on which a transversely arranged thermal insulation cylinder is fixedly provided, and thermal insulation end plates are respectively fixedly and sealed at both ends of the thermal insulation cylinder, and a heat-conducting oil jacket is provided outside the thermal insulation cylinder, and the outer side of the heat-conducting oil jacket and the outer sides of the two thermal insulation end plates are jointly covered with a thermal insulation layer, and the thermal insulation oil jacket is connected with a thermal oil inlet pipe and a thermal oil outlet pipe extending out of the thermal insulation layer, one end of the thermal insulation cylinder is provided with an insulation feed pipe passing through the heat-conducting oil jacket and the thermal insulation layer, and the lower part of the other end of the thermal insulation cylinder is provided with a heat-conducting oil jacket passing through the An insulation discharge pipe of a heat-conducting oil jacket and the insulation layer, wherein the insulation discharge pipe is provided with an insulation discharge control valve; an insulation turning shaft is rotatably installed in the insulation cylinder, and an outer environment temperature turning spiral and an inner environment temperature turning spiral are provided on the insulation turning shaft, and the inner environment temperature turning spiral is arranged in the opposite direction to the spiral direction of the outer environment temperature turning spiral; insulation turning fixing rods are fixedly connected between the outer environment temperature turning spiral, the inner environment temperature turning spiral and the insulation turning shaft respectively; the insulation turning shaft extends out of one of the insulation end plates and is connected with an insulation turning drive device.

[0008] As an optimal technical solution, two dynamic heat preservation plasticizing devices are provided; the cooling and discharging equipment comprises a cooling bracket, on which a transversely arranged cooling cylinder is fixedly provided, and cooling end plates are fixedly and sealed at both ends of the cooling cylinder, and a cooling water jacket is provided outside the cooling cylinder, and the cooling water jacket is connected with a cooling water inlet pipe and a cooling water outlet pipe, and cooling feed pipes passing through the cooling water jacket are provided at both ends of the cooling cylinder, and a cooling discharge pipe passing through the cooling water jacket is provided at the middle lower part of the cooling cylinder, and a cooling discharge control valve is provided at the cooling discharge pipe; the cooling cylinder A cooling turning shaft is rotatably installed inside, and an outer ring cooling turning spiral and an inner ring cooling turning spiral are provided on the cooling turning shaft between the cooling feed pipe and the cooling discharge pipe on each side. The spiral directions of the two outer ring cooling turning spirals are oppositely arranged, and the spiral directions of the outer ring cooling turning spiral and the inner ring cooling turning spiral on the same side are oppositely arranged, and cooling turning fixing rods are fixedly connected between the outer ring cooling turning spiral, the inner ring cooling turning spiral and the cooling turning shaft respectively; the cooling turning shaft extends out of one of the cooling end plates and is connected to a cooling turning driving device.

[0009] As a preferred technical solution, the cooling discharge pipe is connected to a plurality of cooling output augers which are connected end to end in sequence.

[0010] As a preferred technical solution, the feeding equipment includes a feeding bracket, a batching hopper is installed on the feeding bracket, a batching outlet is provided at the bottom of the batching hopper, a batching discharge control valve is provided on the batching hopper at the batching outlet, and a metering device is provided between the batching hopper and the feeding bracket; a plurality of storage bins are fixedly provided on the feeding bracket, and a batching input device is connected to the discharge port of each storage bin respectively, and a batching inlet corresponding to each batching input device is provided on the batching hopper, and a batching flexible material guide pipe is provided between the discharge port of each batching input device and the corresponding batching inlet.

[0011] As a preferred technical solution, a feeding hopper is installed on the feeding bracket between the ingredient outlet and the feeding end of the high-speed stirring and plasticizing equipment, a feeding track corresponding to the feeding hopper is provided on the feeding bracket, a dumping guide section is provided at one end of the feeding track close to the feeding end of the high-speed stirring and plasticizing equipment, and a feeding reciprocating drive device is provided between the feeding hopper and the feeding bracket.

[0012] As an optimal technical solution, the high-speed stirring plasticizing equipment includes a stirring bracket, a stirring tank is fixedly provided on the stirring bracket, a stirring feed pipe is provided on the top of the stirring tank, a stirring hopper is provided on the top of the stirring feed pipe, and a stirring feed control valve is provided at the stirring feed pipe; stirring discharge pipes are respectively provided on both sides of the lower part of the stirring tank, and a stirring discharge control valve is respectively provided at each stirring discharge pipe, and the two stirring discharge pipes constitute the discharge end of the high-speed stirring plasticizing equipment; a stirring main shaft is penetrated through the bottom of the stirring tank, the outer end of the stirring main shaft is connected to a high-speed stirring drive device, and the inner end of the stirring main shaft is provided with a stirring assembly.

[0013] Due to the adoption of the above technical scheme, the high-temperature and normal-pressure continuous plasticizing system includes a high-speed stirring plasticizing device, the feed end of the high-speed stirring plasticizing device is connected to a feeding device, the discharge end of the high-speed stirring plasticizing device is connected to at least two dynamic heat preservation plasticizing devices, the high-speed stirring plasticizing device is arranged to discharge materials alternately to the dynamic heat preservation plasticizing device, and the two dynamic heat preservation plasticizing devices are commonly connected to a cooling discharge device. The feeding device of the present invention feeds the mixed rubber material formed after adding additives into the high-speed stirring plasticizing device. The high-speed stirring plasticizing device utilizes the high-speed stirring effect to quickly heat up the mixed rubber material, and the high-speed stirring can also fully mix the mixed rubber material at the same time, without the problem of agglomeration and coking, and the stirring, collision and tearing can also promote the breaking of the sulfur bonds inside the rubber material. The mixed rubber material that has been stirred at high speed for a certain period of time is alternately discharged into multiple dynamic heat preservation plasticizing devices. Each of the dynamic heat preservation plasticizing devices can have a heat preservation time several times longer than the high-speed stirring time. In each of the dynamic heat preservation plasticizing devices, high-temperature plasticizing treatment can be continuously performed at an ideal plasticizing temperature and sufficient high-temperature time, and the rubber powder is finally plasticized thoroughly. The equipment of the present invention is significantly reduced, there is no rubber premixing link, and there are no multiple spiral propulsion drives, etc., the overall cost is low, and the energy consumption is also low. The present invention can realize continuous batch plasticizing treatment with high output. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0015] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle batching hopper from a top view;

[0017] Figure 3 yes Figure 1 An enlarged structural diagram of the middle feeding hopper, showing the material receiving position and dumping position of the feeding hopper;

[0018] Figure 4 yes Figure 1 A schematic diagram of the enlarged structure of a medium- and high-speed mixing equipment;

[0019] Figure 5 yes Figure 4 Schematic diagram of the left view structure;

[0020] Figure 6 yes Figure 1 A schematic diagram of a cross-sectional enlarged structure of a single dynamic heat preservation plasticizing device;

[0021] Figure 7 yes Figure 1Enlarged structural diagram of the middle cooling cylinder.

[0022] In the figure: 1-feeding equipment; 101-feeding bracket; 102-batch hopper; 103-batch discharging control valve; 104-metering device; 105-storage bin; 106-batch input device; 107-batch flexible guide pipe; 108-feeding hopper; 109-feeding track; 110-dumping guide section; 111-feeding reciprocating drive device;

[0023] 2-high-speed stirring plasticizing equipment; 201-stirring bracket; 202-stirring tank; 203-stirring feed pipe; 204-stirring hopper; 205-stirring feed control valve; 206-stirring discharge pipe; 207-stirring discharge control valve; 208-high-speed stirring drive device;

[0024] 3-dynamic thermal insulation plasticizing equipment; 301-thermal insulation bracket; 302-thermal insulation cylinder; 303-thermal insulation end plate; 304-thermal oil jacket; 305-thermal insulation layer; 306-thermal oil inlet pipe; 307-thermal oil outlet pipe; 308-thermal insulation feed pipe; 309-thermal insulation discharge pipe; 310-thermal insulation discharge control valve; 311-thermal insulation turning shaft; 312-external environmental temperature turning spiral; 313-internal environmental temperature turning spiral; 314-thermal insulation turning fixed rod; 315-thermal insulation turning drive device;

[0025] 4-Cooling and discharging equipment; 401-Cooling bracket; 402-Cooling cylinder; 403-Cooling end plate; 404-Cooling water jacket; 405-Cooling water inlet pipe; 406-Cooling water outlet pipe; 407-Cooling feed pipe; 408-Cooling discharge pipe; 409-Cooling discharging control valve; 410-Cooling turning shaft; 411-Outer ring cooling turning screw; 412-Inner ring cooling turning screw; 413-Cooling turning fixing rod; 414-Cooling turning drive device; 415-Cooling output auger. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, exemplary embodiments of the present invention are described only by way of illustration. Needless to say, those of ordinary skill in the art will recognize that the described embodiments may be modified in a variety of ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0027] like Figure 1As shown, the high-temperature and normal-pressure continuous plasticizing system includes a high-speed stirring plasticizing device 2, the feeding end of the high-speed stirring plasticizing device 2 is connected to a feeding device 1, the discharging end of the high-speed stirring plasticizing device 2 is connected to at least two dynamic heat preservation plasticizing devices 3, the high-speed stirring plasticizing device 2 is arranged to discharge materials alternately to the dynamic heat preservation plasticizing device 3, and the two dynamic heat preservation plasticizing devices 3 are commonly connected to a cooling discharging device 4.

[0028] like Figure 1 and Figure 2 As shown, the feeding device 1 includes a feeding bracket 101, a batching hopper 102 is installed on the feeding bracket 101, a batching outlet is provided at the bottom of the batching hopper 102, and a batching discharge control valve 103 is provided on the batching hopper 102 at the batching outlet. The batching discharge control valve 103 in this embodiment includes a batching discharge valve plate radially slidably installed at the batching outlet, and the batching discharge valve plate is connected to a batching discharge control cylinder; the batching discharge control cylinder controls whether the batching discharge valve plate blocks the batching outlet to achieve the purpose of stopping or discharging the material.

[0029] A metering device 104 is provided between the batching hopper 102 and the feeding bracket 101. Preferably, the metering device 104 includes at least three weighing sensors provided between the batching hopper 102 and the feeding bracket 101. Through the metering device 104, the weight of various raw materials added to the batching hopper 102 can be obtained in real time, so as to accurately control the batching ratio.

[0030] Several storage bins 105 are fixedly provided on the feeding bracket 101. This embodiment shows that there are three storage bins 105, which store raw rubber powder, pine flavor and coal tar respectively. The discharge port of each storage bin 105 is connected to a batching input device 106, and the batching input device 106 is implemented by an auger. The batching hopper 102 is provided with a batching inlet corresponding to each of the batching input devices 106, and a batching flexible guide pipe 107 is provided between the discharge port of each of the batching input devices 106 and the corresponding batching inlet. The provision of the flexible guide pipe 107 ensures that the batching input device 106 and the like do not affect the metering and weighing of the batching hopper 102, which is beneficial to the accuracy of the batching in the batching hopper 102.

[0031] like Figure 1 and Figure 3As shown, a feeding hopper 108 is installed on the feeding bracket 101 between the batching outlet and the feeding end of the high-speed stirring plasticizing equipment 2, and a feeding track 109 corresponding to the feeding hopper 108 is provided on the feeding bracket 101. The feeding hopper 108 can be slidably mounted on the feeding track 109, or can be rolled on the feeding track 109. This embodiment is illustrated by the latter, and the feeding track 109 adopts a U-shaped groove track with two notches arranged opposite to each other, and the wheels on the feeding hopper 108 are located in the two U-shaped groove tracks. A dumping guide section 110 is provided at one end of the feeding track 109 close to the feeding end of the high-speed stirring plasticizing equipment 2. This embodiment illustrates that the dumping guide section 110 is arc-shaped. When the feeding hopper 108 reaches the dumping guide section 110, the bucket body tilts, and the material inside can be dumped into the high-speed stirring plasticizing equipment 2.

[0032] A reciprocating feeding drive device 111 is provided between the feeding hopper 108 and the feeding bracket 101. This embodiment shows that the reciprocating feeding drive device 111 includes a plurality of reciprocating feeding transmission wheels arranged along the feeding track 109. A reciprocating feeding driving wheel is also provided on the feeding bracket 101. A reciprocating feeding driving chain is provided between the reciprocating feeding driving wheels. The reciprocating feeding driving chain is connected to the feeding hopper 108. A reciprocating feeding driving motor connected to the power of the reciprocating feeding driving wheel is installed on the feeding bracket 101.

[0033] When the feed hopper 108 is below the batching outlet, the mixed rubber material output from the batching outlet can fall into the feed hopper 108; at this time, the feed reciprocating drive device 111 drives the feed hopper 108 to the dumping guide section 110 to wait for feeding. When the high-speed stirring and plasticizing equipment 2 needs to be fed, the feed reciprocating drive device 111 drives the feed hopper 108 to the dumping guide section 110, and the mixed rubber material in the feed hopper 108 can be dumped into the high-speed stirring and plasticizing equipment 2. Thereafter, the feed hopper 108 is driven back to the bottom of the batching outlet, and after receiving the mixed rubber material, it waits again in front of the dumping guide section 110, and this process is repeated repeatedly.

[0034] like Figure 1 , Figure 4 and Figure 5As shown, the high-speed stirring plasticizing equipment 2 includes a stirring support 201, a stirring tank 202 is fixedly provided on the stirring support 201, a stirring feed pipe 203 is provided on the top of the stirring tank 202, a stirring receiving hopper 204 is provided on the top of the stirring feed pipe 203, and the stirring receiving hopper 204 is used to receive the mixed rubber material poured from the supply hopper 108. A stirring feed control valve 205 is provided at the stirring feed pipe 203, and the stirring feed control valve 205 is also implemented in the form of a radial valve plate and a control cylinder.

[0035] The stirring tank 202 is provided with stirring discharge pipes 206 on both sides of the lower part, and each stirring discharge pipe 206 is provided with a stirring discharge control valve 207, which is also implemented in the form of a radial valve plate and a control cylinder. The two stirring discharge pipes 206 constitute the discharge end of the high-speed stirring plasticizing device 2, and of course, the two stirring discharge pipes 206 are respectively connected to the two dynamic heat preservation plasticizing devices 3.

[0036] The bottom of the stirring tank 202 is penetrated by a stirring main shaft, the outer end of the stirring main shaft is connected to a high-speed stirring drive device 208, and the inner end of the stirring main shaft is provided with a stirring assembly. Conventionally, the stirring assembly is a structure such as stirring teeth fixedly arranged at the inner end of the stirring main shaft. After the high-speed stirring drive device 208 drives the stirring main shaft to rotate at a high speed, the stirring assembly can perform a high-speed stirring action in the stirring tank 202. Based on the law of conservation of energy, high-speed stirring will produce faster energy conversion, which can make the mixed rubber material heat up quickly. In addition, the mixing effect of high-speed stirring can effectively avoid agglomeration and coking of the rubber material. In addition, high-speed stirring can bring about strong collision and crushing effects, which will promote the plasticization of the rubber material.

[0037] like Figure 1 and Figure 6 As shown, the dynamic heat preservation plasticizing equipment 3 includes a heat preservation bracket 301, on which a heat preservation barrel 302 is fixedly arranged horizontally, and heat preservation end plates 303 are fixedly and sealed at both ends of the heat preservation barrel 302, and a heat conduction oil jacket 304 is arranged outside the heat preservation barrel 302, and the outer side of the heat conduction oil jacket 304 and the outer side of the two heat preservation end plates 303 are jointly covered with a heat preservation layer 305, and the heat conduction oil jacket 304 is connected with a heat conduction oil inlet pipe 306 and a heat conduction oil outlet pipe 307 extending out of the heat preservation layer 305. Of course, the heat conduction oil inlet pipe 306 and the heat conduction oil outlet pipe 307 are also connected to a heat conduction oil circulation pump, a heat conduction oil tank, etc. The arrangement of the heat conduction oil jacket 304 and the heat preservation layer 305 can keep the inside of the heat preservation barrel 302 at a high temperature.

[0038] One end of the insulation cylinder 302 is provided with an insulation feed pipe 308 passing through the heat-conducting oil jacket 304 and the insulation layer 305, and the insulation feed pipe 308 is connected to the corresponding stirring discharge pipe 206. The lower part of the other end of the insulation cylinder 302 is provided with an insulation discharge pipe 309 passing through the heat-conducting oil jacket 304 and the insulation layer 305, and the insulation discharge pipe 309 is provided with an insulation discharge control valve 310. The insulation discharge control valve 310 is also implemented by a radial valve plate and a control cylinder structure.

[0039] The insulation turning shaft 311 is rotatably installed in the insulation cylinder 302, and the insulation turning shaft 311 is provided with an outer environment temperature turning spiral 312 and an inner environment temperature turning spiral 313. Of course, the outer diameter of the inner environment temperature turning spiral 313 is not larger than the inner diameter of the outer environment temperature turning spiral 312. The spiral direction of the inner environment temperature turning spiral 313 is opposite to that of the outer environment temperature turning spiral 312, so that the two can produce different pushing directions. The insulation turning fixing rod 314 is fixedly connected between the outer environment temperature turning spiral 312, the inner environment temperature turning spiral 313 and the insulation turning shaft 311. The insulation turning fixing rod 314 can fix the outer environment temperature turning spiral 312 and the inner environment temperature turning spiral 313, and in the cross section of the insulation cylinder 302, it occupies a small space and will not hinder the pushing of the inner and outer rings. The heat-insulating material turning shaft 311 extends out of one of the heat-insulating end plates 303 and is connected to a heat-insulating material turning driving device 315. Conventionally, the heat-insulating material turning driving device 315 includes a driving motor and a reducer, etc.

[0040] After the insulation turning drive device 315 drives the insulation turning shaft 311 to rotate, the outer environmental temperature turning spiral 312 pushes the rubber material supplied from the insulation feed pipe 308 to move toward the insulation discharge pipe 309. During this period, the part that is higher than the blade height of the outer environmental temperature turning spiral 312 is driven by the inner environmental temperature turning spiral 313 to return to the insulation feed pipe 308. Most of the rubber material is pushed to the insulation discharge pipe 309. When the insulation discharge pipe 309 is not opened, the rubber material accumulates near the insulation discharge pipe 309, and its height will continue to exceed the height of the outer environmental temperature turning spiral 312. Therefore, the higher part will be continuously pushed back to the insulation feed pipe 308 by the inner environmental temperature turning spiral 313. Therefore, before the insulation discharge pipe 309 is opened, the rubber material will form a circular tumbling in a large range and locally inside the insulation tube 302, and the cyclically tumbling rubber material will continue to be plasticized under the high temperature environment inside the insulation tube 302. At the same time, the cyclically tumbling rubber material can also repeatedly stick to the tube wall of the insulation tube 302 at the lower tube wall of the insulation tube 302, and be directly subjected to heat conduction. Therefore, the rubber material in the insulation tube 302 can be continuously plasticized at an ideal plasticizing temperature under the high temperature effects such as continuous heat radiation and repeated heat conduction, and the rubber material is plasticized evenly, and the plasticizing effect is further improved. After the insulation discharge control valve 310 is opened, the rubber material pushed by the external environmental temperature turning screw 312 can be output from the insulation discharge pipe 309. The height of the rubber material in the insulation cylinder 302 gradually decreases, so that all the rubber material can be finally output from the insulation discharge pipe 309 under the push of the outer environmental temperature turning spiral 312, and the insulation discharge pipe 309 finally outputs all the plasticized rubber powder to the cooling discharge device 4.

[0041] like Figure 1 and Figure 7 As shown, the cooling and discharging equipment 4 includes a cooling bracket 401, on which a transversely arranged cooling cylinder 402 is fixedly provided, and cooling end plates 403 are respectively fixedly sealed at both ends of the cooling cylinder 402, and a cooling water jacket 404 is provided outside the cooling cylinder 402, and the cooling water jacket 404 is connected to a cooling water inlet pipe 405 and a cooling water outlet pipe 406. Of course, the cooling water inlet pipe 405 and the cooling water outlet pipe 406 are connected to a cooling water circulation pump and a cooling water tank, etc.

[0042] The dynamic heat preservation plasticizing equipment 3 described in this embodiment is provided with two sets, so the two ends of the cooling cylinder 402 described in this embodiment are respectively provided with cooling feed pipes 407 passing through the cooling water jacket 404, and the middle lower part of the cooling cylinder 402 is provided with a cooling discharge pipe 408 passing through the cooling water jacket 404, and the cooling discharge pipe 408 is provided with a cooling discharge control valve 409. The cooling discharge control valve 409 is also implemented by a radial valve plate and a control cylinder structure.

[0043] A cooling turning shaft 410 is rotatably installed in the cooling cylinder 402. An outer ring cooling turning spiral 411 and an inner ring cooling turning spiral 412 are provided on the cooling turning shaft 410 between the cooling feed pipe 407 and the cooling discharge pipe 408 on each side. The spiral directions of the two outer ring cooling turning spirals 411 are opposite, and the spiral directions of the outer ring cooling turning spiral 411 and the inner ring cooling turning spiral 412 on the same side are opposite. A cooling turning fixed rod 413 is fixedly connected between the outer ring cooling turning spiral 411, the inner ring cooling turning spiral 412 and the cooling turning shaft 410 respectively; the cooling turning shaft 410 extends out of one of the cooling end plates 403 and is connected to a cooling turning drive device 414.

[0044] The cooling material turning drive device 414 drives the cooling material turning shaft 410 to rotate, and the two cooling feed pipes 407 alternately receive the plasticized rubber material output by the two dynamic heat preservation plasticizing devices 3. After the plasticized rubber material enters one of the cooling feed pipes 407, the outer ring cooling material turning spiral 411 on this side can push the plasticized rubber material to be output to the cooling discharge pipe 408. During the output process, the part that is higher than the blade height of the outer ring cooling material turning spiral 411 is returned and pushed by the inner ring cooling material turning spiral 412. The cooling water jacket 404 maintains the ideal cooling temperature at the cooling cylinder 402. Therefore, in the process of pushing the plasticized rubber material to the cooling discharge pipe 408, the plasticized rubber material close to the cooling cylinder 402 can be continuously pushed to the cooling discharge pipe 408 for output due to the good cooling effect of the cooling water jacket 404; and the part higher than the height of the outer ring cooling material turning spiral 411 will be pushed back and at a certain time in the future, it will also be close to the inner wall of the cooling cylinder 402 and pushed out by the outer ring cooling material turning spiral 411. This is equivalent to the rubber material that is far away from the wall of the cooling cylinder 402 and has not been well cooled being pushed back and cooled again. Therefore, all plasticized rubber materials can be well cooled in the cooling cylinder 402 and output from the cooling discharge pipe 408.

[0045] The cooling discharge pipe 408 of this embodiment is connected to a plurality of cooling output augers 415 connected end to end in sequence, and the cooling output augers 415 can further cool the plasticized rubber material so that the plasticized rubber powder finally output can be directly packaged. The cooling output augers 415 are usually a spiral push mechanism with a cooling structure wrapped outside, and a hollow push shaft is connected to a rotary joint to achieve internal material cooling, which is easy to understand by those skilled in the art based on the drawings and the prior art, and will not be repeated here.

[0046] The feeding device 1 of this embodiment feeds the mixed rubber material formed after adding the additive into the high-speed stirring plasticizing device 2. The high-speed stirring plasticizing device 2 uses the high-speed stirring effect to quickly heat up the mixed rubber material, and at the same time, the mixed rubber material can be fully mixed, so that the rubber material is not easy to agglomerate or coke; and the stirring, collision and tearing can also promote the rupture of the internal sulfur bonds of the rubber material and promote the plasticization of the rubber material. The mixed rubber material stirred at high speed for a certain period of time is alternately discharged into two dynamic heat preservation plasticizing devices 3, that is, the mixed rubber material stirred at high speed this time is discharged into one of the dynamic heat preservation plasticizing devices 3, and the mixed rubber material stirred at high speed next time is discharged into the other dynamic heat preservation plasticizing device 3. Then, each of the dynamic heat preservation plasticizing devices 3 of this embodiment can have a heat preservation time of up to two high-speed stirring times; in each of the dynamic heat preservation plasticizing devices 3, the rubber material can be continuously subjected to high-temperature plasticization treatment at an ideal plasticizing temperature and sufficient time, and the rubber powder is finally plasticized thoroughly with the circulation and material turning effect inside the dynamic heat preservation plasticizing device 3. The cooling cylinder 402 in the cooling and discharging device 4 can alternately receive the plasticized rubber materials output by the two dynamic heat preservation and plasticizing devices 3, which is equivalent to re-merging the plasticized rubber materials output by the two dynamic heat preservation and plasticizing devices 3. The cooling and discharging pipe 408 thereon can continuously output the plasticized rubber powder, which is conducive to promoting the increase of production. The cooling cylinder 402 also has a material turning function, so the plasticized rubber material can be well cooled and then output after subsequent cooling, and the final plasticized rubber powder can be directly used for packaging.

[0047] This embodiment utilizes the rapid heating, uniform stirring, and strong collision and tearing of high-speed stirring to make the rubber material quickly enter the plasticized state, and then cooperates with the ideal plasticizing temperature and sufficient time of the dynamic heat preservation plasticizing equipment 3 to plasticize the rubber powder thoroughly. The equipment in this embodiment is significantly reduced, there is no premixing of rubber materials, and there are no multiple spiral propulsion drives, etc., the overall cost is low, and the energy consumption is also low. This embodiment realizes continuous batch plasticizing processing with high output. In addition, this embodiment starts with high-speed stirring and plasticizing, and all subsequent operations are carried out in a relatively closed space, which is conducive to centralized control and treatment of gas and dust, and has a good environmental protection effect.

[0048] The above shows and describes the basic principle, main features and advantages of the present invention. The technicians in this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements. For example, in this embodiment, three dynamic heat preservation and plasticizing devices 3 are arranged, so that each dynamic heat preservation and plasticizing device 3 can produce a heat preservation time three times longer than the high-speed stirring time. On the cooling cylinder 402, two cooling feed pipes 407 are arranged at one end and one cooling feed pipe 407 is arranged at the other end. The cooling discharge device 4 can also achieve the effect of re-merging the plasticized rubber materials output by the three dynamic heat preservation and plasticizing devices 3. These changes and improvements all fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. High temperature and normal pressure continuous plasticizing system, characterized by: It comprises a high-speed stirring plasticizing device, wherein the feeding end of the high-speed stirring plasticizing device is connected to a feeding device, the discharging end of the high-speed stirring plasticizing device is connected to at least two dynamic heat preservation plasticizing devices, the high-speed stirring plasticizing device is arranged to discharge materials alternately to the dynamic heat preservation plasticizing device, and the two dynamic heat preservation plasticizing devices are commonly connected to a cooling discharging device; The dynamic heat preservation plasticizing equipment is provided with two sets; the cooling and discharging equipment comprises a cooling bracket, on which a transversely arranged cooling cylinder is fixedly provided, and cooling end plates are respectively fixedly and sealed at both ends of the cooling cylinder, and a cooling water jacket is provided outside the cooling cylinder, and the cooling water jacket is connected with a cooling water inlet pipe and a cooling water outlet pipe, and cooling feed pipes passing through the cooling water jacket are respectively provided at both ends of the cooling cylinder, and a cooling discharging pipe passing through the cooling water jacket is provided at the middle lower part of the cooling cylinder, and a cooling discharging control valve is provided at the cooling discharging pipe; a rotatable valve is installed in the cooling cylinder. There is a cooling turning shaft, and an outer ring cooling turning spiral and an inner ring cooling turning spiral are provided on the cooling turning shaft between the cooling feed pipe and the cooling discharge pipe on each side. The spiral directions of the two outer ring cooling turning spirals are arranged in opposite directions, and the spiral directions of the outer ring cooling turning spiral and the inner ring cooling turning spiral on the same side are arranged in opposite directions. Cooling turning fixing rods are fixedly connected between the outer ring cooling turning spiral, the inner ring cooling turning spiral and the cooling turning shaft respectively; the cooling turning shaft extends out of one of the cooling end plates and is connected to a cooling turning driving device.

2. The high temperature and normal pressure continuous plasticizing system according to claim 1, characterized in that: The dynamic thermal insulation plasticizing equipment comprises a thermal insulation support, on which a transversely arranged thermal insulation cylinder is fixedly provided, and thermal insulation end plates are respectively fixedly and sealed at both ends of the thermal insulation cylinder, and a heat-conducting oil jacket is provided outside the thermal insulation cylinder, and the outer side of the heat-conducting oil jacket and the outer sides of the two thermal insulation end plates are jointly covered with a thermal insulation layer, and the thermal insulation oil jacket is connected with a thermal oil inlet pipe and a thermal oil outlet pipe extending out of the thermal insulation layer, one end of the thermal insulation cylinder is provided with a thermal insulation feed pipe passing through the thermal oil jacket and the thermal insulation layer, and the lower part of the other end of the thermal insulation cylinder is provided with a heat-conducting oil jacket and a heat-conducting oil outlet pipe passing through the thermal oil jacket and the thermal insulation layer. The insulation discharge pipe of the insulation layer is provided with an insulation discharge control valve; an insulation turning shaft is rotatably installed in the insulation cylinder, and an outer environment temperature turning spiral and an inner environment temperature turning spiral are provided on the insulation turning shaft, and the inner environment temperature turning spiral is arranged in the opposite direction of the outer environment temperature turning spiral; insulation turning fixing rods are fixedly connected between the outer environment temperature turning spiral, the inner environment temperature turning spiral and the insulation turning shaft respectively; the insulation turning shaft extends out of one of the insulation end plates and is connected with an insulation turning drive device.

3. The high temperature and normal pressure continuous plasticizing system according to claim 1, characterized in that: The cooling discharge pipe is connected to a plurality of cooling output augers which are connected end to end in sequence.

4. The high temperature and normal pressure continuous plasticizing system according to claim 1, characterized in that: The feeding equipment includes a feeding bracket, a batching hopper is installed on the feeding bracket, a batching outlet is provided at the bottom of the batching hopper, a batching discharge control valve is provided on the batching hopper at the batching outlet, and a metering device is provided between the batching hopper and the feeding bracket; a plurality of storage bins are fixedly provided on the feeding bracket, and a batching input device is connected to the discharge port of each storage bin respectively, a batching inlet corresponding to each batching input device is provided on the batching hopper, and a batching flexible material guide pipe is provided between the discharge port of each batching input device and the corresponding batching inlet.

5. The high temperature and normal pressure continuous plasticizing system according to claim 4, characterized in that: A feeding hopper is installed on the feeding bracket between the ingredient outlet and the feeding end of the high-speed stirring and plasticizing equipment. A feeding track corresponding to the feeding hopper is provided on the feeding bracket. A dumping guide section is provided at one end of the feeding track close to the feeding end of the high-speed stirring and plasticizing equipment. A feeding reciprocating drive device is provided between the feeding hopper and the feeding bracket.

6. The high temperature and normal pressure continuous plasticizing system according to claim 1, characterized in that: The high-speed stirring plasticizing equipment comprises a stirring bracket, a stirring tank is fixedly arranged on the stirring bracket, a stirring feed pipe is arranged on the top of the stirring tank, a stirring hopper is arranged on the top of the stirring feed pipe, and a stirring feed control valve is arranged at the stirring feed pipe; stirring discharge pipes are arranged on both sides of the lower part of the stirring tank, and a stirring discharge control valve is arranged at each stirring discharge pipe, and the two stirring discharge pipes constitute the discharge end of the high-speed stirring plasticizing equipment; a stirring main shaft is penetrated through the bottom of the stirring tank, a high-speed stirring driving device is connected to the outer end of the stirring main shaft, and a stirring assembly is arranged at the inner end of the stirring main shaft.

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