阅读说明：本技术 一种废橡胶热再生装置及其热再生方法 (Waste rubber heat regeneration device and heat regeneration method thereof ) 是由 兰金美 于 2020-06-22 设计创作，主要内容包括：本发明公开了一种废橡胶热再生装置及其热再生方法,属于废橡胶再生加工和利用的技术领域,包括底部四角处均设置有支撑脚的基座,还包括：设置在基座上侧的搅拌筒,搅拌筒的底部设置有多个均匀分布的T型转动支杆,搅拌筒的顶部设置有进料口,且进料口上安装有密封盖板,搅拌筒的端部左下角处安装有出料口,且出料口上安装有出料阀门；开设在基座顶部的环状T型限位转动槽,多个T型转动支杆的T字端部均滑动设置在环状T型限位转动槽的内壁；设置在基座顶部的第一传动机构,且第一传动机构位于搅拌筒的左侧,本发明循环利用氮气以及将其变为液氮进行良好的冷却,构思巧妙,搅拌加热效果极佳,具有突出的实质性特点和显著的进步。(The invention discloses a waste rubber heat regeneration device and a heat regeneration method thereof, belonging to the technical field of waste rubber regeneration processing and utilization, comprising a base with supporting legs arranged at four corners of the bottom, and also comprising: the stirring cylinder is arranged on the upper side of the base, a plurality of T-shaped rotating supporting rods which are uniformly distributed are arranged at the bottom of the stirring cylinder, a feeding hole is formed in the top of the stirring cylinder, a sealing cover plate is installed on the feeding hole, a discharging hole is installed at the lower left corner of the end part of the stirring cylinder, and a discharging valve is installed on the discharging hole; an annular T-shaped limiting rotating groove formed in the top of the base, wherein T-shaped end portions of the plurality of T-shaped rotating supporting rods are arranged on the inner wall of the annular T-shaped limiting rotating groove in a sliding mode; the stirring device comprises a stirring drum, a first transmission mechanism, a second transmission mechanism and a stirring mechanism, wherein the first transmission mechanism is arranged at the top of the base and is positioned on the left side of the stirring drum.)

1. The utility model provides a useless rubber heat regenerating unit, includes that bottom four corners department all is provided with base (1) of supporting legs (2), its characterized in that still includes:

the stirring device comprises a stirring cylinder (5) arranged on the upper side of a base (1), wherein a plurality of T-shaped rotating supporting rods (4) which are uniformly distributed are arranged at the bottom of the stirring cylinder (5), a feeding hole (6) is formed in the top of the stirring cylinder (5), a sealing cover plate is arranged on the feeding hole (6), a discharging hole (7) is formed in the lower left corner of the end part of the stirring cylinder (5), and a discharging valve is arranged on the discharging hole (7);

the T-shaped end parts of the plurality of T-shaped rotating supporting rods (4) are arranged on the inner wall of the annular T-shaped limiting rotating groove (3) in a sliding manner;

the first transmission mechanism (8) is arranged at the top of the base (1), the first transmission mechanism (8) is positioned on the left side of the mixing drum (5), and the first transmission mechanism (8) is further connected with the mixing drum (5) to realize high-speed rotation of the mixing drum (5);

the arc heating plate (13) is arranged at the top of the base (1), and the arc heating plate (13) is positioned at the right side of the stirring cylinder (5) and used for supplying heat;

the stirring mechanism (15) is arranged in the stirring cylinder (5) and is used for realizing high-speed stirring;

the second transmission mechanism (9) is arranged at the top of the stirring cylinder (5), and the second transmission mechanism (9) is also connected with the stirring mechanism (15) to realize high-speed rotation of the stirring mechanism;

the nitrogen tank (10) is arranged on the right side of the base (1), and nitrogen is filled in the nitrogen tank (10);

the nitrogen circulating mechanism (11) is arranged between the nitrogen tank (10) and the stirring drum (5) and is used for realizing the circulation of nitrogen;

and the nitrogen pressurizing and cooling mechanism (12) is arranged on the nitrogen tank (10) and is used for liquefying nitrogen and rapidly cooling the front side and the rear side of the mixing drum (5).

2. The waste rubber heat regeneration device according to claim 1, wherein the nitrogen gas circulation mechanism (11) comprises a first air pump (111), a first air pipe (112), a second air pipe (113), a third air pipe (114) and a filter screen (115), the first air pump (111) is connected with the nitrogen gas tank (10) through the first air pipe (112), one end of the second air pipe (113) is connected with an exhaust port of the first air pump (111), the other end of the second air pipe (113) rotatably penetrates through the bottom of the mixing drum (5) and extends to an upper position of the inner side of the mixing drum, a second movable hole (16) is formed in the top of the base (1), the second air pipe (113) movably penetrates through the second movable hole (16) through the bottom of the base (1), the filter screen (115) is arranged at the end of the second air pipe (113), one end of the third air pipe (114) is hermetically inserted into the nitrogen gas tank (10), and the other end of the third air pipe (114) is rotated to penetrate through the top of the mixing drum (5) and extend to the inner side of the mixing drum, and the nitrogen sequentially passes through the first air pipe (112), the first air pump (111), the second air pipe (113) and the third air pipe (114) to form circulation.

3. The waste rubber heat regeneration device according to claim 2, further comprising a set of connection mechanisms (14) respectively disposed at the top and bottom of the agitating drum (5), wherein the second air pipe (113) and the third air pipe (114) are respectively rotatably engaged with the two sets of connection mechanisms (14).

4. The waste rubber heat regeneration device according to claim 3, wherein each group of the connecting mechanisms (14) comprises a T-shaped connecting block (141), a T-shaped connecting block (142) and a first movable hole (143), the two T-shaped connecting blocks (142) are respectively arranged at the top and the bottom of the mixing drum (5), the T-shaped connecting block (141) is rotatably arranged in the T-shaped connecting block (142), the first movable hole (143) is arranged at the top of the T-shaped connecting block (141), and the third air pipe (114) and the second air pipe (113) are respectively in interference fit with the two first movable holes (143).

5. The waste rubber heat regeneration device according to claim 4, wherein the nitrogen pressurizing and cooling mechanism (12) comprises a second air pump (121), a fourth air pipe (122), a fifth air pipe (123), a pressurizer (124), a sixth air pipe (125), a cooler (126), a first water pipe (127), a second water pipe (128) and an atomizing nozzle (129), the second air pump (121) is connected with the nitrogen tank (10) through the fourth air pipe (122), the pressurizer (124) is connected with the second air pump (121) through the fifth air pipe (123), the cooler (126) is connected with the pressurizer (124) through the sixth air pipe (125), the first water pipe (127) is arranged at a liquid outlet of the cooler (126), another part of the first water pipe (127) is positioned at the rear side of the mixing drum (5), and the top of the first water pipe (127) is closed, the second water pipe (128) and first water pipe (127) intercommunication setting, and another part of second water pipe (128) is located the front side of churn (5), the top of second water pipe (128) is sealed, atomizer (129) set up in two sets ofly, and two sets of atomizer (129) set up respectively in first water pipe (127) and second water pipe (128) and be close to the tip of churn (5) and communicate with it, every group atomizer (129) all are provided with a plurality ofly, and the vertical equidistance setting of a plurality of atomizer (129).

6. The waste rubber heat regeneration device according to claim 5, wherein the first transmission mechanism (8) comprises a first motor (81), a coupler (82), a transmission shaft (83), a driving wheel (84), a driven wheel (85) and a transmission belt (86), the first motor (81) is arranged on the top of the base (1), the transmission shaft (83) is connected with the first motor (81) through the coupler (82), the driving wheel (84) is arranged on the top of the transmission shaft (83), the driven wheel (85) is arranged on the circumferential surface of the mixing drum (5), and the driving wheel (84) is connected with the driven wheel (85) through the transmission belt (86) to realize transmission.

7. The waste rubber heat regeneration device according to claim 6, wherein the stirring mechanism (15) is provided with two groups, each group of stirring mechanism (15) comprises a stirring rod (151) and a stirring blade (152), the two stirring rods (151) are respectively rotatably arranged at the left side and the right side of the lower inner wall of the stirring cylinder (5), the top of the stirring rod (151) penetrates through the stirring cylinder (5) and extends to the upper side of the stirring cylinder, the penetrating positions of the stirring rod (151) and the stirring cylinder (5) are in rotating fit through a bearing, each group of stirring blades (152) is provided with a plurality of stirring blades (152), the plurality of stirring blades (152) are uniformly arranged on the circumferential surface of the stirring rod (151), and the second air pipe (113) is arranged between the two groups of stirring blades (152) and is not in contact with the two groups of stirring blades.

8. The waste rubber heat recycling device of claim 7, wherein the second transmission mechanism (9) comprises a second motor (91), a first gear (92), a second gear (93), a toothed belt (94) and a storage battery (95), the second motor (91) is arranged on the top of the base (1), the first gear (92) is arranged at the output end of the second motor (91), the second gear (93) is provided with two gears, the two second gears (93) are respectively arranged on the tops of the two stirring rods (151), the toothed belt (94) is arranged between the first gear (92) and the two second gears (93) in a transmission manner, the third air pipe (114) penetrates through the toothed belt (94) and is not in contact with the toothed belt, the storage battery (95) is provided with two gears, and the two storage batteries (95) are both arranged on the top of the base (1), the second motor (91) is electrically connected with the storage battery (95).

9. The apparatus for thermally recycling waste rubber according to claim 8, further comprising a vacuum pumping system.

10. A heat regenerating method using the waste rubber heat regenerating device of claim 9, characterized by comprising the steps of:

s1, heating: starting the arc heating plate (13) to heat the arc heating plate, transmitting the heat to the stirring cylinder (5) by the arc heating plate (13), and heating for 15-20 min;

s2, vacuumizing: pumping out air in the stirring cylinder (5) through a vacuum pumping system to form vacuum, rapidly feeding the waste rubber coarse powder, the environment-friendly softener and the powder auxiliary material into the stirring cylinder (5) through the feeding hole (6) according to the feeding range of 100/8-150/20-1500, and rapidly closing the sealing cover plate;

s3, starting: starting the first motor (81), the second motor (91) and the first air pump (111) at the same time;

s4, stirring in an anaerobic heating mode: the output end of a first motor (81) rotates to drive a transmission shaft (83) to rotate through a coupler (82), the transmission shaft (83) rotates to drive a driving wheel (84) to rotate, the driving wheel (84) rotates to drive a driven wheel (85) to rotate through a transmission belt (86), a T-shaped rotating support rod (4) slides in an annular T-shaped limiting rotating groove (3), so that a mixing drum (5) can be driven to do circular motion along the track of the annular T-shaped limiting rotating groove (3), the output end of a second motor (91) rotates to drive a first gear (92) to rotate, the first gear (92) rotates to drive two second gears (93) to rotate through a toothed belt (94), so that the two mixing rods (151) rotate respectively, finally, the rotation of two groups of mixing blades (152) is realized, the outward rotation is matched with the inward rotation, the efficient mixing is realized, and the efficient heating is realized through the heat emitted by an arc-shaped heating plate (13) while mixing, the stirring cylinder (5) is rotated, so that the nitrogen can be uniformly heated, the nitrogen in the nitrogen tank (10) is pumped out by the first air pump (111) through the first air pipe (112), discharged into the stirring cylinder (5) through the second air pipe (113), and enters the nitrogen tank (10) again through the third air pipe (114), so that circulation is formed, the nitrogen is recycled, anaerobic heating stirring is carried out, and stirring is carried out for 25-30 min;

s5, cooling: and (2) stopping the arc-shaped heating plate (13) and the first air pump (111), starting the second air pump (121) at the same time, pumping out nitrogen in a nitrogen tank (10) by the second air pump (121) through a fourth air pipe (122), conveying the nitrogen into a pressurizer (124) through a fifth air pipe (123), conveying the nitrogen into a cooler (126) through a sixth air pipe (125) to be cooled to form liquid nitrogen, conveying the liquid nitrogen into a first water pipe (127) and a second water pipe (128) respectively, and finally spraying the liquid nitrogen outwards through two groups of atomizing nozzles (129) respectively, wherein the first motor (81) and the second motor (91) are braked, so that the material on the inner side of the stirring drum (5) can be stirred by two groups of stirring blades (152), rotating inwards and matching with outwards, the cooling effect is accelerated, the cooling is performed for 20-25 min, and discharging is performed to obtain a finished product.

Technical Field

The invention relates to the technical field of waste rubber regeneration processing and utilization, in particular to a waste rubber heat regeneration device and a heat regeneration method thereof.

Background

The regeneration and utilization of waste rubber is the sunlight industry which is necessary to be vigorously developed for practicing circular economy and sustainable development, carrying out economic construction and national revival in China, but because the regeneration technology of waste tire rubber which is more than 60 percent of the total amount of the waste rubber is not developed, in particular the technology for preparing the regenerated rubber by using waste tires through treatment such as crushing, separation, high-temperature sulfur cutting and the like, namely the technology of 'thermal regeneration' is not developed enough, the enterprise which is made of the waste tire and is seven-fold in China is slightly profitable and useless in economy for a long time, the advantages of products such as low cost, low cost performance and the like are improved, the production is large in toxic dust, pollution and the situation of the reduction of the power consumption of the products, and the situation refers to the development and decline track of the regenerated rubber industry in the developed countries in China, the industry which uses waste tires to produce reclaimed rubber can also go foreign dust, and becomes the sunset industry with dull development prospect.

The waste tyre is treated by the traditional heat regeneration technology of crushing, separating, high-temperature sulfur cutting, normal-temperature refining, or the latest crushing, separating, high-temperature pasting or mixing common carbon black into paste slurry, although serious process and product defects of nylon fiber skeleton pollution, low utilization value of softener toxin, low physical property recovery rate after the paste slurry is regenerated and the like still exist, the rubber material treated by the heat regeneration technology has high elongation because the rubber hydrocarbon chain is refined by a high-temperature heat and roller shear force field or is dissolved and expanded into paste slurry by a high-temperature large-dose heat solvent, the rubber hydrocarbon chain is mostly recovered into a linear shape, the regenerated rubber or the product rubber material matched with the regenerated rubber has higher elongation, the physical property of the rubber material is not possessed by the commonly-called fine and superfine rubber powder obtained by the normal-temperature or low-temperature freezing method which is attempted to replace the thermal method regenerated rubber, and is newly developed and only subjected to normal-temperature or plasticizing treatment on the market recently, but the rubber powder does not pass through a roller shear field or does not pass through a large amount of solvent high-temperature reinforced swelling plasticizing rubber powder, so that the hot-process regenerated rubber is popular among downstream users emphasizing large product elongation, and therefore, the hot regeneration technology of the waste rubber is enabled to meet the universal index of sustainable development only by innovation and improvement, namely, the hot regeneration technology of the waste rubber including waste tires is enabled to meet the four-flag resource recycling requirement of 'full-scale, green, high-value and energy-saving', and the hot-process regeneration industry of the waste rubber can be enabled to recover.

The system proposes the literature of the four flag parallel resource recycling scheme of 'full, green, high value and energy saving' implementation to the waste tyre, firstly pushes Chinese patent application (200810083330.6), the scheme adopts the combination implementation of the prior various utilization processes including waste rubber products such as the waste tyre, and the like, so that the respective independent and competitive implementation of the recycling process is changed into a proportional cooperative implementation process, the recycling scheme of the waste tyre does not generate low value nylon skeleton fiber any more, and does not have the difficult problem of the low value thermal cracking carbon black going out, and the obtained high value product comprises: the scheme also combines the utilization process of the waste tire rubber and the process of preparing common carbon black by using common fuel oil and gas through a thermal cracking method, so that an energy consumption process of discharging certain byproducts is organically combined with an energy discharge process of consuming certain byproducts, but the scheme is biased to a variety without roll refining on the high-valued development of a regenerated product of the waste tire rubber, and the thermal regeneration process of the waste rubber such as the waste tire with high elongation is not improved, namely the scheme cannot comprise the so-called thermal process of preparing the regenerated rubber by using 5-40 mesh sieve rubber powder through high-temperature sulfur breaking and normal-temperature refining.

The latest improvements to the waste tire rubber heat regeneration process and the products thereof are as follows:

according to Chinese patent application (200710150962.5), vulcanized rubber powder of 20-50 meshes is added with a softener of a specified component with the weight of 60-115% of that of the rubber powder, the mixture is placed in a pressure-resistant heating stirring tank and subjected to thermal regeneration treatment with the temperature of 160-200 ℃ and the pressure of 0.5-0.7 Mpa for 2-3 hours in the tank, the rubber powder is changed into paste, and then carbon black with the weight of 60-100% of that of the rubber powder is mixed to obtain a paste regenerated rubber product filled with the carbon black.

As described in the chinese patent application (200710024356.9), a softening agent of a specified component, which is 21 to 30% of the weight of rubber powder, is added to tire rubber powder passing through a 40-mesh sieve, and the tire rubber powder is placed in a pressure-resistant heating and stirring tank, and subjected to thermal regeneration treatment at 240 to 260 ℃ and 2.6 to 3.0MPa for less than 1 hour of tank heat preservation, and the rubber powder which is taken out of the tank and cooled to be in a loose cake shape is subjected to roll refining to obtain a high-strength regenerated rubber product with a tensile strength of 12 to 18 MPa.

As described in the chinese patent application (200710192039.8), a softening agent of a specified component, which is 20.54 to 25.1% of the weight of rubber powder, is added to tire rubber powder passing through a 20-mesh sieve, and the tire rubber powder is placed in a pressure-resistant heating and stirring tank, and subjected to thermal regeneration treatment with steam pressure of 0.6 to 1.0MPa for heat preservation in the tank for 20 to 40 minutes, and the rubber powder which is taken out of the tank and cooled to be in a loose cake shape is subjected to roll refining to obtain a high-strength regenerated rubber product with a tensile strength of 15 to 16 MPa.

Further, as described in the chinese patent application (200810146444.0), the instant activation and reduction method for rubber is characterized in that: a. the adjustable pressure cabin is suitable for rubber powder with various particle sizes; b. a large contra-rotating screw rod and a small contra-rotating screw rod form shearing force in an anhydrous state; c. the friction automatically generates high temperature instant and acts with shearing force; d. cooling the sealed space with water; e. the S auxiliary agent accelerates the thermal oxidative depolymerization process and protects the rubber material from high-temperature cracking, in the application, the heat borne by the rubber material is generated by friction driven by a motor, the heat consumption is certainly larger than that of direct heat supply of fuel or heat supply by utilizing waste heat, in addition, the application does not make clear detailed description on the S auxiliary agent and products with self-statement higher than national standards, and the provided mechanical schematic diagram of the counter-rotating screw is not clear, so the disclosure degree of the application does not reach the ground that common technicians can reproduce the effect of the invention without creative labor.

In addition, the existing reclaimed rubber technology can not realize sustainable resource utilization in the true sense for the low-rubber content or/and mixed low-grade waste rubber resources.

The regenerated rubber products obtained by thermal regeneration treatment of waste rubber such as waste tires and the like are applied in the formulation of downstream rubber products, and the application characteristics can be summarized by carrying out statistics according to the formulation listed in the "rubber product practical formulation universe" (Xie Zhong, Yang Ming Fang, published by the chemical industry publishing agency, the material science and engineering publishing center, 2 nd edition in 2004): at least 95 percent of application examples in the downstream formula application are regenerated rubber meeting the so-called national standard, materials such as new rubber, reinforcing agent, filler, softener and the like are added, powder eating and glue beating are carried out again, and statistical analysis shows that: the existing regenerated rubber production technology generally does not pay attention to the advantage that the granular or paste-slurry materials subjected to high-temperature treatment are easy to stir and eat powder with low energy consumption, and develops a regenerated rubber product capable of reducing high power consumption and glue beating in downstream application to the maximum extent, namely the existing regenerated rubber production technology does not contain a technical scheme which can protect the environment, so that the technical scheme of how to replace the aggregate formed by regenerated rubber, a softening agent and powder auxiliary materials to the maximum extent in downstream formula application of the obtained product is realized, and the serious excessive repeated processing problem exists in the regeneration and recycling treatment of waste rubber in an industrial chain.

The authorization publication number "CN 102030934B" describes "a method for thermal regeneration of waste rubber, which is to put the raw powder material/environmental-friendly softener/powder auxiliary material of waste rubber with the weight ratio of 100/8-150/20-1500 into a stirring heater, heat the raw powder material in anaerobic condition, then introduce the raw powder material into a stirring cooler, cool the raw powder material to below 100 ℃ and obtain the product; or slowly feeding a part or all of the powder auxiliary materials in the feeding material, adding the powder auxiliary materials which are firstly discharged into the stirring heater before the material which is fed into the stirring heater in the earlier stage is discharged, or/and adding the hot material when the hot material is introduced into the stirring cooler, and discharging when the temperature of the mixed material is cooled to be below 100 ℃; or the formula materials are initially mixed and then are led into a screw extruder, and after the materials are heated and mixed, the materials are cooled to be below 100 ℃ to obtain a product; or the heat regeneration and the known thermal cracking of the waste rubber or the process of preparing the carbon black by adding combustible oil and combustible gas establish a multidirectional migration relationship of materials and/or energy, in the method, the oxygen-insulated heating process can be realized by introducing nitrogen, but after the nitrogen is blown, good circulation is not performed, so that the nitrogen cannot be well and sufficiently utilized, the subsequent cooling is independent cooling, and the problem to be solved is how to circularly utilize the nitrogen and the physical characteristics of the nitrogen, and the stirring and heating effect of the stirring heater in the patent is not ideal.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a waste rubber heat regeneration device and a heat regeneration method thereof, which recycle nitrogen and change the nitrogen into liquid nitrogen for good cooling, have ingenious conception and excellent stirring and heating effects, and have outstanding substantive characteristics and remarkable progress.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides a useless rubber heat regenerating unit, includes that bottom four corners department all is provided with the base of supporting legs, still includes:

the stirring device comprises a stirring drum arranged on the upper side of a base, wherein a plurality of T-shaped rotating supporting rods which are uniformly distributed are arranged at the bottom of the stirring drum, a feeding hole is formed in the top of the stirring drum, a sealing cover plate is arranged on the feeding hole, a discharging hole is formed in the lower left corner of the end part of the stirring drum, and a discharging valve is arranged on the discharging hole;

the T-shaped end parts of the plurality of T-shaped rotating supporting rods are arranged on the inner wall of the annular T-shaped limiting rotating groove in a sliding manner;

the first transmission mechanism is arranged at the top of the base and positioned on the left side of the mixing drum, and the first transmission mechanism is also connected with the mixing drum to realize high-speed rotation of the mixing drum;

the arc heating plate is arranged at the top of the base, is positioned on the right side of the stirring cylinder and is used for supplying heat;

the stirring mechanism is arranged in the stirring cylinder and is used for realizing high-speed stirring;

the second transmission mechanism is arranged at the top of the stirring cylinder and is also connected with the stirring mechanism to realize high-speed rotation of the stirring mechanism;

the nitrogen tank is arranged on the right side of the base and is filled with nitrogen;

the nitrogen circulating mechanism is arranged between the nitrogen tank and the stirring drum and is used for realizing the circulation of nitrogen;

the nitrogen pressurization and cooling mechanism is arranged on the nitrogen tank and used for realizing the liquefaction of the nitrogen and rapidly cooling the front side and the rear side of the stirring cylinder.

As a preferable scheme of the present invention, the nitrogen gas circulation mechanism includes a first air pump, a first air pipe, a second air pipe, a third air pipe and a filter screen, the first air pump is connected to the nitrogen gas tank through the first air pipe, one end of the second air pipe is connected to an exhaust port of the first air pump, the other end of the second air pipe rotatably penetrates through the bottom of the mixing drum and extends to an upper position of the inner side of the mixing drum, the top of the base is provided with a second movable hole, the second air pipe movably penetrates through the second movable hole through the bottom of the base, the filter screen is disposed at an end of the second air pipe, one end of the third air pipe is hermetically inserted into the nitrogen gas tank, the other end of the third air pipe rotatably penetrates through the top of the mixing drum and extends to the inner side of the mixing drum, and the nitrogen gas sequentially passes through the first air pipe, the first air pump, the second air pipe and the third.

As a preferable scheme of the invention, the stirring device further comprises a group of connecting mechanisms respectively arranged at the top and the bottom of the stirring cylinder, and the second air pipe and the third air pipe are respectively in running fit with the two groups of connecting mechanisms.

As a preferable scheme of the invention, each group of connecting mechanisms comprises a T-shaped connecting block, a T-shaped connecting block and a first movable hole, the two T-shaped connecting blocks are respectively arranged at the top and the bottom of the mixing drum, the T-shaped connecting blocks are rotatably arranged in the T-shaped connecting blocks, the first movable hole is arranged at the top of the T-shaped connecting blocks, and the third air pipe and the second air pipe are respectively in interference fit with the two first movable holes.

As a preferable scheme of the invention, the nitrogen pressurizing and cooling mechanism comprises a second air pump, a fourth air pipe, a fifth air pipe, a pressurizer, a sixth air pipe, a cooler, a first water pipe, a second water pipe and atomizer nozzles, the second air pump is connected with a nitrogen tank through the fourth air pipe, the pressurizer is connected with the second air pump through the fifth air pipe, the cooler is connected with the pressurizer through the sixth air pipe, the first water pipe is arranged at a liquid outlet of the cooler, the other part of the first water pipe is positioned at the rear side of the mixing drum, the top of the first water pipe is closed, the second water pipe is communicated with the first water pipe, the other part of the second water pipe is positioned at the front side of the mixing drum, the top of the second water pipe is closed, the atomizer nozzles are arranged in two groups, and the atomizer nozzles in the two groups are respectively arranged at the end parts of the first water pipe and the second water pipe close to the mixing drum and are communicated with the first water pipe and the second water pipe, every group atomizer all is provided with a plurality ofly, and the vertical equidistance setting of a plurality of atomizers.

As a preferable scheme of the present invention, the first transmission mechanism includes a first motor, a coupling, a transmission shaft, a driving wheel, a driven wheel and a transmission belt, the first motor is disposed on the top of the base, the transmission shaft is connected to the first motor through the coupling, the driving wheel is disposed on the top of the transmission shaft, the driven wheel is disposed on the surface of the circumferential surface of the mixing drum, and the driving wheel is connected to the driven wheel through the transmission belt to achieve transmission.

As a preferable scheme of the invention, two groups of stirring mechanisms are provided, each group of stirring mechanisms comprises a stirring rod and a stirring blade, the two stirring rods are respectively and rotatably arranged at the left side and the right side of the lower inner wall of the stirring cylinder, the top of the stirring rod penetrates through the stirring cylinder and extends to the upper side of the stirring cylinder, the penetrating part of the stirring rod and the stirring cylinder is in rotating fit through a bearing, a plurality of stirring blades are arranged in each group, the plurality of stirring blades are uniformly arranged on the circumferential surface of the stirring rod, and the second air pipe is arranged between the two groups of stirring blades and is not in contact with the two groups of stirring blades.

As a preferable scheme of the present invention, the second transmission mechanism includes a second motor, a first gear, two second gears, a toothed belt, and a storage battery, the second motor is disposed on the top of the base, the first gear is disposed at an output end of the second motor, the two second gears are disposed on the tops of the two stirring rods, the toothed belt is disposed between the first gear and the two second gears, the third air pipe penetrates through the toothed belt and does not contact with the toothed belt, the two storage batteries are disposed, both the two storage batteries are disposed on the top of the base, and the second motor is electrically connected to the storage batteries.

As a preferable scheme of the invention, the device also comprises a vacuum-pumping system.

A waste rubber thermal regeneration method comprises the following steps:

s1, heating: starting the arc heating plate to heat, transmitting the heat to the stirring drum by the arc heating plate, and heating for 15-20 min;

s2, vacuumizing: pumping out air in the stirring cylinder through a vacuum pumping system to form vacuum, quickly feeding the waste rubber coarse powder, the environment-friendly softener and the powder auxiliary material into the stirring cylinder through a feeding hole according to the feeding range of 100/8-150/20-1500, and quickly closing a sealing cover plate;

s3, starting: simultaneously starting the first motor, the second motor and the first air pump;

s4, stirring in an anaerobic heating mode: the output end of the first motor rotates to drive the transmission shaft to rotate through the coupler, the transmission shaft rotates to drive the driving wheel to rotate, the driving wheel rotates to drive the driven wheel to rotate through the transmission belt, the T-shaped rotating support rod slides in the annular T-shaped limiting rotating groove, so that the mixing drum can be driven to do circular motion along the track of the annular T-shaped limiting rotating groove, the output end of the second motor rotates to drive the first gear to rotate, the first gear rotates to drive the two second gears to rotate through the toothed belt, so that the two mixing rods rotate respectively, finally, the rotation of the two groups of mixing blades is realized, the outward rotation is matched with the inward rotation, the efficient mixing is realized, the heat emitted by the arc-shaped heating plate is efficiently heated while the mixing is carried out, the mixing drum rotates, so that the nitrogen in the nitrogen tank can be uniformly heated, the first air pump pumps out through the first air pipe, entering the nitrogen tank again through a third air pipe to form circulation, recycling nitrogen, carrying out anaerobic heating and stirring, and stirring for-min;

s5, cooling: the arc-shaped heating plate and the first air pump are stopped, the second air pump is started simultaneously, nitrogen in the nitrogen tank is pumped out by the second air pump through the fourth air pipe, the nitrogen is conveyed into the pressurizer through the fifth air pipe to be pressurized, then the nitrogen is conveyed into the temperature reducer through the sixth air pipe to be cooled to form liquid nitrogen, the liquid nitrogen is conveyed into the first water pipe and the second water pipe respectively and finally sprayed outwards through the two groups of atomizing nozzles respectively, the first motor and the second motor are braked, the stirring cylinder still rotates, materials on the inner side of the stirring cylinder can be stirred by the two groups of stirring blades, the materials are rotated in an inward rotation matching mode, the cooling effect is accelerated, the cooling is carried out for 20-25 min, and the finished product is obtained after discharging.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) according to the invention, the nitrogen circulation can be realized through the arrangement of the nitrogen circulation mechanism, the nitrogen circulation can be conducted through the action of the arc-shaped heating plate and the cooperation of the first transmission mechanism and the second transmission mechanism, the nitrogen circulation mechanism can be used for oxygen insulation heating, the first transmission mechanism and the second transmission mechanism are matched to rotate in a positive rotation manner, the stirring effect is improved, the stirring efficiency is improved, meanwhile, the first transmission mechanism and the second transmission mechanism are matched to rotate in a positive rotation manner, the nitrogen circulation mechanism is easier to heat and is more uniformly heated, the stirring effect is further improved, and the stirring efficiency is improved.

(2) According to the invention, after the nitrogen is reasonably recycled, the nitrogen is liquefied into liquid nitrogen through the action of the nitrogen pressurizing and cooling mechanism, and the stirring cylinder is well cooled by utilizing the characteristic that the liquid nitrogen can be efficiently cooled, so that the material in the stirring cylinder is efficiently cooled.

(3) The invention recycles nitrogen and changes the nitrogen into liquid nitrogen for good cooling, has ingenious conception and excellent stirring and heating effects, and has outstanding substantive characteristics and remarkable progress.

Drawings

FIG. 1 is a perspective view of a waste rubber heat-regenerating apparatus according to the present invention;

FIG. 2 is a first sectional perspective view of a waste rubber heat regenerating unit according to the present invention;

FIG. 3 is an enlarged view of the waste rubber heat regenerating unit of the present invention at A in FIG. 2;

FIG. 4 is a second cross-sectional perspective view of a waste rubber thermal reclamation apparatus of the present invention;

FIG. 5 is an enlarged view of the waste rubber heat-regenerating device of the present invention at B in FIG. 4.

The reference numbers in the figures illustrate:

1 base, 2 supporting feet, 3 annular T-shaped limiting rotating groove, 4T-shaped rotating support rod, 5 mixing drum, 6 feed inlet, 7 discharge outlet, 8 first transmission mechanism, 81 first motor, 82 coupler, 83 transmission shaft, 84 driving wheel, 85 driven wheel, 86 transmission belt, 9 second transmission mechanism, 91 second motor, 92 first gear, 93 second gear, 94 toothed belt, 95 storage battery, 10 nitrogen tank, 11 nitrogen circulation mechanism, 111 first air pump, 112 first air pipe, 113 second air pipe, 114 third air pipe, 115 filter screen, 12 nitrogen pressurizing and cooling mechanism, 121 second air pump, 122 fourth air pipe, 123 fifth air pipe, 124 pressurizer, 125 sixth air pipe, 126 cooler, 127 first water pipe, 128 second water pipe, 129 atomization nozzle, 13 arc heating plate, 14 connecting mechanism, 141T-shaped connecting block, 142T-shaped rotating groove, first movable hole 143 first movable hole, 143 first movable hole, 15 stirring mechanisms, 151 stirring rods, 152 stirring blades and 16 second movable holes.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.