阅读说明：本技术 一种废弃橡胶高值循环再利用方法 (High-value recycling method for waste rubber ) 是由 不公告发明人 于 2020-06-29 设计创作，主要内容包括：本发明公开了一种废弃橡胶高值循环再利用方法,属于橡胶循环利用领域,一种废弃橡胶高值循环再利用方法,通过对向摩棒,使得牵拉滚筒在球磨机控制下转动并通过磁性摩珠进行球磨时,磁性摩珠会不断发生位置的变化,从而对不同的对向摩棒不断发生撞击作用,同时在牵拉绳拉扯力下,相间的两个对向摩棒会不断在筛孔内发生相反方向的移动,从而有效避免筛孔内橡胶颗粒卡住的情况,同时有效加速球磨完成后对橡胶颗粒的筛分效率,同时在微翻动摩层的作用下,在球磨时,对向摩棒附近的橡胶颗粒在不同方向的力的作用下,能够发生一定的微翻动效果,从而有效提高橡胶颗粒整体的球磨效率和效果。(The invention discloses a high-value recycling method of waste rubber, belonging to the field of rubber recycling, in particular to a high-value recycling method of waste rubber, by the opposite friction rods, when the traction roller rotates under the control of the ball mill and is ball-milled by the magnetic friction beads, the magnetic friction beads can continuously change the positions, thereby continuously impacting different opposite rubbing rods, and simultaneously, under the pulling force of the pulling rope, two opposite rubbing rods at intervals continuously move in opposite directions in the sieve pores, thereby effectively avoiding the situation that the rubber particles in the sieve pores are blocked, simultaneously effectively accelerating the screening efficiency of the rubber particles after the ball milling is finished, simultaneously under the action of slightly turning the friction layer, during the ball milling, rubber particles near the opposite rubbing rods can generate a certain micro-stirring effect under the action of forces in different directions, so that the overall ball milling efficiency and effect of the rubber particles are effectively improved.)

1. A high-value recycling method of waste rubber is characterized by comprising the following steps: the method comprises the following steps:

s1, firstly, cleaning the waste rubber by an oil stain cleaning agent, and then drying the cleaned waste rubber;

s2, crushing the cleaned waste rubber to obtain rubber particles;

s3, adding rubber particles into a drawing roller (1) of a ball mill, performing ball milling for multiple times through magnetic beads, performing ball milling in the drawing roller (1), and screening through a sieve pore (2) provided with an opposite-direction friction rod (3) to obtain rubber particles;

and S4, mixing the rubber particles with white carbon black, a thermally reversible cross-linking agent, an alkyl phenolic resin, modified rubber protective wax and an anti-aging agent in an internal mixer, and then cooling and vulcanizing to obtain the recyclable rubber raw material.

2. The method for recycling waste rubber with high value as claimed in claim 1, wherein the method comprises the following steps: the crushing of the waste rubber in the step S2 is performed at a low temperature which is lower than the glass transition temperature of the rubber.

3. The method for recycling waste rubber with high value as claimed in claim 1, wherein the method comprises the following steps: sieve mesh (2) are dug on traction drum (1), and sieve mesh (2) evenly are provided with a plurality ofly on traction drum (1), subtend friction stick (3) are inserted and are established in sieve mesh (2).

4. The method for recycling waste rubber with high value as claimed in claim 3, wherein the method comprises the following steps: pulling ropes (4) are fixedly connected between the end parts of the two opposite friction rods (3) which are distributed at intervals and positioned in the pulling roller (1).

5. The method for recycling waste rubber with high value as claimed in claim 4, wherein the method comprises the following steps: the traction rope (4) is made of non-elastic materials, and the diameters of the two end parts of the opposite friction rod (3) are larger than the inner diameters of the sieve holes (2).

6. The method for recycling waste rubber with high value as claimed in claim 1, wherein the method comprises the following steps: the opposite friction rod (3) comprises an outer pulling ball (31), an inner friction ball (32) and a through shaft (33), two ends of the through shaft (33) are fixedly connected with the outer pulling ball (31) and the inner friction ball (32) respectively, the inner friction ball (32) is located in the pulling roller (1), the through shaft (33) is located outside the pulling roller (1), and one ends, close to each other, of the outer pulling ball (31) and the inner friction ball (32) are fixedly connected with a gap protection tower (5).

7. The method for recycling waste rubber with high value as claimed in claim 6, wherein the method comprises the following steps: the surface of the inner friction ball (32) is provided with a through coarse friction layer, and the thickness of the through coarse friction layer is 0.05-0.1 mm.

8. The method for recycling waste rubber with high value as claimed in claim 6, wherein the method comprises the following steps: the clearance guard tower (5) comprises a triangular guard cone (52) and a tip guard point (51) connected to the end of the triangular guard cone (52), wherein the tip guard point (51) is made of an elastic material.

9. The method for recycling waste rubber with high value as claimed in claim 6, wherein the method comprises the following steps: the end, far away from the through shaft (33), of the inner friction ball (32) is embedded with a micro-turning friction layer (6), and a plurality of inner friction-assisting beads are uniformly embedded in the micro-turning friction layer (6).

10. The method for recycling waste rubber with high value as claimed in claim 9, wherein the method comprises the following steps: the inner friction-assisting bead comprises a plurality of positive pole magnetic blocks (71) and negative pole magnetic blocks (72) which are distributed at intervals, and the outward magnetic poles of the positive pole magnetic blocks (71) and the outward magnetic poles of the negative pole magnetic blocks (72) are opposite.

Technical Field

The invention relates to the field of rubber recycling, in particular to a high-value recycling method of waste rubber.

Background

Rubber (Rubber) is a high-elasticity polymer material with reversible deformation, is rich in elasticity at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed. Rubber is a completely amorphous polymer with a low glass transition temperature (Tg) and a molecular weight often very high, greater than several hundred thousand.

Natural rubber is produced from latex, in which a part of non-rubber components contained in the latex is left in the solid natural rubber. Natural rubber typically contains 92% to 95% rubber hydrocarbons, while non-rubber hydrocarbons comprise 5% to 8%. Because of different preparation methods, different production places and even different glue-collecting seasons, the proportions of the components may be different but are basically within the range. The protein can promote the vulcanization of the rubber and delay the aging. On the other hand, proteins have a disadvantage of having strong water absorption, causing moisture absorption and mold formation of rubber, lowering insulation properties, and increasing heat generation. The acetone extract is some higher fatty acids and sterols, some of which have the functions of natural anti-aging agent and accelerator, and also have the functions of helping the powdery compounding agent to disperse and soften the raw rubber in the mixing process. The ash mainly contains salts such as magnesium phosphate, calcium phosphate and the like, and has a small amount of metal compounds such as copper, manganese, iron and the like, and the content of the metal compounds is controlled because the valence-variable metal ions can promote the aging of rubber. The water content in the dry rubber is not more than 1 percent, and the dry rubber can volatilize in the processing process, but when the water content is too much, not only the raw rubber is easy to mildew in the storage process, but also the processing of the rubber is influenced, for example, the compounding agents are easy to agglomerate in the mixing process; air bubbles are easily generated in the rolling and extruding processes, and air bubbles are generated or are in a spongy shape in the vulcanizing process.

The rubber structure is generally, linear: the general structure of unvulcanized rubber. Because of the large molecular weight, the macromolecular chains are in the shape of random-winding-curve clusters without the action of external force. When the external force is removed, the entanglement degree of the coil is changed, the molecular chain rebounds, and a strong recovery tendency is generated, which is the source of high elasticity of rubber. Branched chain structure: the aggregation of the branches of the macromolecular chains of the rubber forms a gel. Gels are detrimental to both rubber properties and processing. When rubber mixing is carried out, various compounding agents cannot enter a gel area, a local blank is formed, reinforcement and crosslinking cannot be formed, and weak parts of products are formed. A cross-linked structure: linear molecules are connected to each other by bridges of atoms or groups of atoms to form a three-dimensional network. This structure is continuously strengthened as the curing history progresses. Thus, the free-flowing ability of the segment is decreased, plasticity and elongation are decreased, strength, elasticity and hardness are increased, and compression set and swelling degree are decreased.

At present, waste rubber can be smashed or ground into particles through a mechanical method, become micelle and rubber powder, the vulcanized rubber chemical network structure is destroyed through desulfurization technology to make regenerated rubber, thereby realizing recycling, in the rubber smashing process, because the elasticity that rubber itself has, the particle size after leading to smashing is great, therefore need grind once more, in the grinding process, also because its elasticity, the rubber granule of great particle size can take place certain deformation after grinding, thereby pass the mesh that is used for sieving the rubber granule of different particle sizes, the whole particle size of the rubber granule after leading to grinding is inhomogeneous, influence reuse, and in the sieving process, the rubber granule of great particle size still can block in the mesh, lead to the reuse treatment efficiency of waste rubber to seriously reduce.

Disclosure of Invention

1. Technical problem to be solved

In view of the problems in the prior art, the invention aims to provide a high-value recycling method of waste rubber, which comprises the steps of facing friction rods, so that when the traction roller rotates under the control of the ball mill and performs ball milling through the magnetic beads, the magnetic beads can continuously change the positions, thereby continuously impacting different opposite rubbing rods, and simultaneously, under the pulling force of the pulling rope, two opposite rubbing rods at intervals continuously move in opposite directions in the sieve pores, thereby effectively avoiding the situation that the rubber particles in the sieve pores are blocked, simultaneously effectively accelerating the screening efficiency of the rubber particles after the ball milling is finished, simultaneously under the action of slightly turning the friction layer, during the ball milling, rubber particles near the opposite rubbing rods can generate a certain micro-stirring effect under the action of forces in different directions, so that the overall ball milling efficiency and effect of the rubber particles are effectively improved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A high-value recycling method of waste rubber comprises the following steps:

s1, firstly, cleaning the waste rubber by an oil stain cleaning agent, and then drying the cleaned waste rubber;

s2, crushing the cleaned waste rubber to obtain rubber particles;

s3, adding rubber particles into a drawing roller of a ball mill, performing ball milling for multiple times through magnetic beads, performing ball milling in the drawing roller, and screening through a sieve mesh provided with opposite friction rods to obtain rubber particles;

and S4, mixing the rubber particles with white carbon black, a thermally reversible cross-linking agent, an alkyl phenolic resin, modified rubber protective wax and an anti-aging agent in an internal mixer, and then cooling and vulcanizing to obtain the recyclable rubber raw material.

Through the subtend stick of rubbing, make the tractive cylinder rotate under ball mill control and when carrying out the ball-milling through the magnetism pearl of rubbing, the change of position can constantly take place for the magnetism pearl of rubbing, thereby constantly take place the striking effect to the subtend stick of difference, simultaneously under the power is dragged to the tractive rope, alternate two subtend sticks of rubbing can constantly take place the removal in the opposite direction in the sieve mesh, thereby effectively avoid the condition that rubber granules blocked in the sieve mesh, simultaneously effectively accelerate the screening efficiency to rubber granules after the ball-milling is accomplished, simultaneously under the effect on the layer of rubbing that turns a little, when the ball-milling, rubber granules near the subtend stick is under the effect of the not equidirectional power, can take place certain effect of turning a little, thereby effectively improve holistic ball-milling efficiency of rubber granules and effect.

Further, go on at low temperature when breaking waste rubber in S2, and the temperature is less than the glass transition temperature of rubber, and low temperature, waste rubber fragility is great to effectively restrain waste rubber' S elasticity, thereby effectively reduce the broken degree of difficulty of rubber, improve crushing efficiency.

Further, the sieve mesh is excavated on the tractive cylinder, and the sieve mesh evenly is provided with a plurality ofly on the tractive cylinder, the subtend rubbing stick is inserted and is established in the sieve mesh, through subtend rubbing stick for the tractive cylinder rotates under ball mill control and when carrying out the ball-milling through magnetism rubbing bead, the change of position can constantly take place for magnetism rubbing bead, thereby constantly take place the striking effect to the subtend rubbing stick of difference, subtend rubbing stick under the striking of magnetism rubbing bead, can be continuous takes place to remove in the sieve mesh, thereby effectively avoid the condition that rubber granules blocked in the sieve mesh, effectively accelerate the ball-milling simultaneously and accomplish the back, the sieve mesh is to rubber granules's screening efficiency.

Further, alternate two that distribute equal fixedly connected with pulling rope between the tip that the subtend friction stick is located the traction drum, pulling rope connects between two alternate interior friction balls promptly, through pulling rope, when magnetism friction pearl produces the striking to one of them subtend friction stick, this subtend friction stick can be to traction drum outer motion, another subtend friction stick receives the pulling force of pulling rope can be to traction drum inner motion, at continuous ball-milling in-process, subtend friction stick in the sieve mesh can constantly remove to it takes place by the condition of card.

Further, the traction rope is made of inelastic materials, so that the traction rope can react sensitively to the movement of the opposite friction rod, the opposite movement is convenient to drive the other opposite movement, the diameters of the two ends of the opposite friction rod are larger than the inner diameter of the sieve hole, and the opposite friction rod cannot drop in the sieve hole when moving in the sieve hole.

Further, the opposite friction rod comprises an outer pull ball, an inner friction ball and a through shaft, two ends of the through shaft are respectively fixedly connected with the outer pull ball and the inner friction ball, the inner friction ball is located in the traction roller, the through shaft is located outside the traction roller, one ends, close to each other, of the outer pull ball and the inner friction ball are fixedly connected with a gap protection tower, and the gap protection tower is used for protecting two orifices of the sieve mesh from being damaged easily when the two orifices are impacted by the opposite friction rod.

Furthermore, a through coarse rubbing layer is arranged on the surface of the inner rubbing ball, the thickness of the through coarse rubbing layer is 0.05-0.1mm, and the friction force between the through shaft and the inner wall of the sieve mesh can be effectively improved through the through coarse rubbing layer, so that the situation that the inside of the sieve mesh is clamped by rubber particles is effectively reduced.

Further, the tower is protected in clearance includes protects the awl and connects the pointed end of protecting awl tip with the triangle and protect the point, pointed end protects the point and makes for elastic material for when pointed end protected point and tractive cylinder contact, can effectively protect the sieve mesh edge to be difficult for receiving the damage, thereby effectively reduce the condition emergence of sieve mesh fracture, thereby effectively guarantee the life of tractive cylinder.

Further, the one end that interior ball was kept away from to running through the axle inlays and is equipped with the friction layer that turns a little, the inside even inlay of friction layer that turns a little has a plurality of interior balls that help, rotates when carrying out the ball-milling at the tractive cylinder, and magnetism ball constantly can collide with subtend friction stick surface to effectively accelerate the ball-milling effect of the near rubber granule of subtend friction stick.

Further, interior helping the pearl of rubbing includes a plurality of alternate positive pole magnetic path and the negative pole magnetic path that distributes, positive pole magnetic path and negative pole magnetic path are opposite towards the outside magnetic pole for alternate positive pole magnetic path and negative pole magnetic path can produce not equidirectional power with the magnetism pearl of rubbing, thereby make the magnetism pearl of rubbing when being close to the opposite direction stick, rubber granule near the opposite direction stick under the effect of not equidirectional power, certain effect of turning a little can take place, thereby effective supplementary opposite direction stick and the ball-milling effect of magnetism pearl of rubbing to rubber granule, thereby effectively improve holistic ball-milling efficiency of rubber granule and effect.

3. Advantageous effects

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

(1) this scheme is through the subtend stick of rubbing, make the tractive cylinder rotate under ball mill control and when carrying out the ball-milling through the magnetism pearl of rubbing, the change of position can constantly take place for the magnetism pearl of rubbing, thereby constantly take place the striking effect to the subtend stick of difference, simultaneously under the power is dragged to the tractive rope, alternate two subtend sticks of rubbing can constantly take place the removal in the opposite direction in the sieve mesh, thereby effectively avoid the condition that rubber granules blocked in the sieve mesh, simultaneously effectively accelerate the screening efficiency to rubber granules after the ball-milling is accomplished, simultaneously under the effect on the layer of rubbing that turns a little, when the ball-milling, rubber granules near subtend stick is under the effect of the not equidirectional power, can take place certain effect of turning a little, thereby effectively improve holistic ball-milling efficiency of rubber granules and effect.

(2) The waste rubber is crushed at a low temperature in S2, the temperature is lower than the glass transition temperature of the rubber, and the brittleness of the waste rubber is higher at the low temperature, so that the elasticity of the waste rubber is effectively inhibited, the difficulty of rubber crushing is effectively reduced, and the crushing efficiency is improved.

(3) The sieve mesh is excavated on the tractive cylinder, and the sieve mesh evenly is provided with a plurality ofly on the tractive cylinder, the stick is inserted and is established in the sieve mesh to the subtend, through the stick of rubbing, make the tractive cylinder rotate under ball mill control and when carrying out the ball-milling through magnetism pearl, the change of position can constantly take place for magnetism pearl, thereby constantly take place the striking effect to the stick of rubbing of difference, the stick is rubbed under the striking of pearl to the subtend, can constantly take place to remove in the sieve mesh, thereby effectively avoid the condition that rubber particles blocked in the sieve mesh, effectively accelerate the ball-milling simultaneously and accomplish the back, the sieve mesh is to rubber particles's screening efficiency.

(4) Two subtend friction stick that alternate distribution are located equal fixedly connected with pulling rope between the tip in the pulling cylinder, pulling rope connects between the ball in alternate two promptly, through pulling rope, when magnetism rubs the pearl and produces the striking to one of them subtend friction stick, this subtend friction stick can be to pulling cylinder outward movement, another subtend friction stick receives pulling force of pulling rope can be to pulling cylinder internal motion, at continuous ball-milling in-process, subtend friction stick in the sieve mesh can constantly remove, thereby it takes place to reduce its circumstances of being stuck.

(5) The traction rope is made of inelastic materials, so that the traction rope can generate sensitive reaction for the movement of the opposite friction rod, the opposite movement is convenient to drive the other opposite movement, the diameters of the two ends of the opposite friction rod are larger than the inner diameters of the sieve holes, and the opposite friction rod cannot drop in the sieve holes when moving in the sieve holes.

(6) The subtend rubs the stick including drawing the ball outward, interior ball and running through to the axle, run through to the axle both ends respectively with draw ball and interior ball fixed connection outward, interior ball is located the tractive cylinder, it is located outside the tractive cylinder to run through to the axle, draw the equal fixedly connected with clearance of one end that ball and interior ball are close to each other outward and protect the tower, protect the tower through the clearance, two drill ways that can effectively protect the sieve mesh on the one hand are difficult for being damaged when receiving the striking of subtend rubbing the stick, on the other hand, when drawing ball outward or interior ball just with sieve mesh drill way contact, protect the tower through the clearance and can guarantee under this kind of condition, the permeability of sieve mesh both sides, thereby effectively reduce the efficiency of the position of rubbing the stick when to the sieve of rubber granule subtend.

(7) The inner friction ball is provided with a through coarse friction layer on the surface, the thickness of the through coarse friction layer is 0.05-0.1mm, and the friction force between the through shaft and the inner wall of the sieve mesh can be effectively improved through the through coarse friction layer, so that the situation that the inside of the sieve mesh is blocked by rubber particles is effectively reduced.

(8) The tower is protected in clearance includes protects the awl and connects the point is protected at the pointed end that the awl tip was protected to the triangle, and the pointed end is protected the point and is made for elastic material for when pointed end is protected and is contacted with the tractive cylinder, can effectively protect the sieve mesh edge and be difficult for receiving the damage, thereby effectively reduce the condition emergence of sieve mesh fracture, thereby effectively guarantee the life of tractive cylinder.

(9) Interior ball is kept away from to the one end that runs through to the through-shaft and is inlayed and be equipped with the friction layer that turns a little, turns the inside even inlay of friction layer a little and has a plurality of interior helping the pearl that rubs, when the tractive cylinder rotates and carries out the ball-milling, magnetism pearl that rubs constantly with subtend excellent surface bump to effectively accelerate the ball-milling effect of the near rubber granule of subtend excellent friction.

(10) Interior helping pearl of rubbing includes a plurality of alternate anodal magnetic path and the negative pole magnetic path that distributes, anodal magnetic path and negative pole magnetic path are opposite towards the outside magnetic pole, make alternate anodal magnetic path and negative pole magnetic path can produce not equidirectional power with the magnetism pearl of rubbing, thereby make the magnetism pearl of rubbing when being close to the subtend rubbing stick, rubber granule near the subtend rubbing stick is under the effect of not equidirectional power, certain effect of turning a little can take place, thereby effectively supplementary subtend rubbing stick and magnetism pearl of rubbing are to the ball-milling effect of rubber granule, thereby effectively improve holistic ball-milling efficiency of rubber granule and effect.

Drawings

FIG. 1 is a principal flow diagram of the present invention;

FIG. 2 is a perspective schematic view of the pulling roll of the present invention;

FIG. 3 is a schematic structural view of a cross section of a pulling roll of the present invention;

FIG. 4 is a schematic structural diagram of a rubber particle ball-milled by a pulling roller according to the present invention;

FIG. 5 is a schematic structural view of the front face of an opposing friction bar of the present invention;

fig. 6 is a schematic view of the structure at a in fig. 5.

The reference numbers in the figures illustrate:

the device comprises a drawing roller 1, a screen hole 2, a rubbing rod 3 opposite directions, a ball 31 for external drawing, a ball 32 for internal rubbing, a through shaft 33, a drawing rope 4, a gap protection tower 5, a point 51 for tip protection, a cone 52 for triangle protection, a rubbing layer 6 for micro turning, a positive pole magnetic block 71 and a negative pole magnetic block 72.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection 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.