阅读说明：本技术 一种废旧轮胎的循环利用工艺 (Recycling process of waste tires ) 是由 李亮 于 2020-05-27 设计创作，主要内容包括：本发明公开了一种废旧轮胎的循环利用工艺,包括以下步骤：(1)对废旧轮胎进行粗破碎处理,直至废旧轮胎被破碎成为直径30mm-50mm的轮胎片；(2)将所述轮胎片送入到揉捻机中进行钢丝与橡胶的分离；(3)将步骤(2)中分离出的橡胶片送入到第一反应斧中,且在所述第一反应斧中通入冷却水,且所述橡胶片与冷却水的比例为1：9；将所述橡胶片研磨成直径为200μm～300μm的橡胶粉；(4)将所述橡胶粉与所述冷却水的混合液输入第二反应釜中,将所述橡胶粉的直径研磨至30μm～70μm；(5)将步骤(4)得到的橡胶粉混合液依次输入离心机和干燥机,将通过所述干燥机干化好的橡胶粉通过包装机进行包装,然后打包存储。本发明降低了废旧轮胎循环利用的成本。(The invention discloses a recycling process of waste tires, which comprises the following steps: (1) carrying out coarse crushing treatment on the waste tires until the waste tires are crushed into tire pieces with the diameter of 30-50 mm; (2) feeding the tire piece into a rolling machine to separate steel wires from rubber; (3) sending the rubber sheet separated in the step (2) into a first reaction kettle, introducing cooling water into the first reaction kettle, wherein the ratio of the rubber sheet to the cooling water is 1: 9; grinding the rubber sheet into rubber powder with the diameter of 200-300 mu m; (4) inputting the mixed liquid of the rubber powder and the cooling water into a second reaction kettle, and grinding the diameter of the rubber powder to 30-70 μm; (5) and (4) sequentially inputting the rubber powder mixed solution obtained in the step (4) into a centrifugal machine and a dryer, packaging the rubber powder dried by the dryer by a packaging machine, and then packaging and storing. The invention reduces the cost of recycling the waste tires.)

1. A process for recycling waste tires is characterized by comprising the following steps:

(1) carrying out coarse crushing treatment on the waste tires until the waste tires are crushed into tire pieces with the diameter of 30-50 mm;

(2) feeding the tire piece into a rolling machine to separate steel wires from rubber;

(3) sending the rubber sheet separated in the step (2) into a first reaction kettle, introducing cooling water into the first reaction kettle, wherein the ratio of the rubber sheet to the cooling water is 1: 9; an outlet below the first reaction kettle is communicated with an inlet of a crushing and grinding pump, and an outlet of the crushing and grinding pump is communicated with an inlet of the first reaction kettle; circularly crushing the rubber sheet and cooling water between the first reaction kettle and the crushing and grinding pump until the rubber sheet is ground into rubber powder with the diameter of 200-300 microns;

(4) inputting the mixed liquid of the rubber powder and the cooling water into a second reaction kettle, wherein an outlet below the second reaction kettle is communicated with an inlet of a superfine grinding pump, and an outlet of the superfine grinding pump is communicated with an inlet of the second reaction kettle; circularly crushing and grinding the rubber powder through the superfine crushing and grinding pump and the second reaction kettle until the diameter of the rubber powder is ground to 30-70 μm;

(5) and (3) inputting the rubber powder mixed liquid obtained in the step (4) into a centrifugal machine for solid-liquid separation, conveying the rubber powder particles separated by the centrifugal machine to a drying machine through a vibrating distributor for drying treatment, packaging the dried rubber powder by a packaging machine, and then packaging and storing.

2. The process for recycling waste tyres as claimed in claim 1, wherein: in the step (1), screening the waste tires by a separator to obtain car tires and truck tires; directly feeding the car tire into a four-axis shearing crusher for primary crushing, and feeding the car tire into the four-axis shearing crusher for primary crushing after the car tire is processed by a ring cutting machine; and then, sending the tire raw material after the primary crushing into a high-speed shearing crusher for secondary crushing to obtain the tire piece with the diameter of 30-50 mm.

3. The process for recycling waste tyres as claimed in claim 1, wherein: and the cooling water separated by the centrifuge returns to the first reaction kettle again for recycling.

4. The process for recycling waste tyres as claimed in claim 1, wherein: the centrifuge is a two-phase horizontal screw centrifuge.

5. The process for recycling waste tyres as claimed in claim 1, wherein: and the discharge hopper of the centrifuge is communicated with the screw conveyer.

Technical Field

The invention relates to the technical field of waste tire treatment, in particular to a waste tire recycling process.

Background

The waste tire treatment pressure is large, the waste tire is called black pollution, and the recovery and treatment technology of the waste tire is a worldwide problem and also an environmental protection problem. The method mainly comprises two major ways of retreading the waste tires and utilizing the waste tires, wherein the first way is to retread the waste tires; and secondly, the comprehensive utilization of the waste tires. The retreading is a main and optimal mode for utilizing the waste tires, namely, the worn outer layers of the waste tires are cut off, the rubber materials are adhered, and then the waste tires are vulcanized and reused.

Nearly 1200 million tons of scrap tires are currently being disposed of on the market every year. The waste tire treatment process adopts pyrolysis or low-temperature crushing to treat rubber powder of waste tires. The pyrolysis method can generate toxic gas and has great threat to environment and human body, and simultaneously, the method has complex technology, large occupied area and high investment cost.

Disclosure of Invention

The invention aims to provide a waste tire recycling process, which aims to solve the problems in the prior art and reduce the cost of waste tire recycling.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a recycling process of waste tires, which comprises the following steps:

(1) carrying out coarse crushing treatment on the waste tires until the waste tires are crushed into tire pieces with the diameter of 30-50 mm;

(2) feeding the tire piece into a rolling machine to separate steel wires from rubber;

(3) sending the rubber sheet separated in the step (2) into a first reaction kettle, introducing cooling water into the first reaction kettle, wherein the ratio of the rubber sheet to the cooling water is 1: 9; an outlet below the first reaction kettle is communicated with an inlet of a crushing and grinding pump, and an outlet of the crushing and grinding pump is communicated with an inlet of the first reaction kettle; circularly crushing the rubber sheet and cooling water between the first reaction kettle and the crushing and grinding pump until the rubber sheet is ground into rubber powder with the diameter of 200-300 microns;

(4) inputting the mixed liquid of the rubber powder and the cooling water into a second reaction kettle, wherein an outlet below the second reaction kettle is communicated with an inlet of a superfine grinding pump, and an outlet of the superfine grinding pump is communicated with an inlet of the second reaction kettle; circularly crushing and grinding the rubber powder through the superfine crushing and grinding pump and the second reaction kettle until the diameter of the rubber powder is ground to 30-70 μm;

(5) and (3) inputting the rubber powder mixed liquid obtained in the step (4) into a centrifugal machine for solid-liquid separation, conveying the rubber powder particles separated by the centrifugal machine to a drying machine through a vibrating distributor for drying treatment, packaging the dried rubber powder by a packaging machine, and then packaging and storing.

Preferably, in the step (1), the waste tires are firstly screened by a sorting machine to screen out car tires and truck tires; directly feeding the car tire into a four-axis shearing crusher for primary crushing, and feeding the car tire into the four-axis shearing crusher for primary crushing after the car tire is processed by a ring cutting machine; and then, sending the tire raw material after the primary crushing into a high-speed shearing crusher for secondary crushing to obtain the tire piece with the diameter of 30-50 mm.

Preferably, the cooling water separated by the centrifuge is returned to the first reaction kettle for reuse.

Preferably, the centrifuge is a two-phase horizontal screw centrifuge.

Preferably, the discharge hopper of the centrifuge is communicated with the screw conveyor.

Compared with the prior art, the invention has the following technical effects:

the recycling process of the waste tires reduces the recycling cost of the waste tires. The recycling process of the waste tires adopts a wet method to process and recycle the waste rubber, so that on one hand, the energy is saved, and the electric energy of the whole production line is less; on the other hand, the process flow is simple, on the other hand, the process is environment-friendly, has no pollution to the environment, has no dust and toxic gas discharge, and has the advantages of deep processing of all rubber powder at normal temperature, less investment of a production line and high product recovery value.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a flow chart of the process for recycling scrap tires according to the present invention;

wherein: 1-coarse crushing treatment, 2-a first reaction kettle, 3-a wet crushing pump, 4-a second reaction kettle, 5-a superfine grinding pump, 6-a centrifugal machine, 7-a vibrating distributor, 8-a dryer, 9-a packaging machine and 10-storage.

Detailed Description

The technical solutions 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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

The invention aims to provide a waste tire recycling process, which aims to solve the problems in the prior art and reduce the cost of waste tire recycling.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1: the embodiment provides a waste tire recycling process, which comprises the following steps:

(1) carrying out coarse crushing treatment 1 on the waste tires until the waste tires are crushed into tire pieces with the diameter of 30-50 mm; specifically, screening waste tires by a sorting machine to obtain car tires and truck tires; directly feeding the car tire into a four-axis shearing crusher for primary crushing, and feeding the car tire into the four-axis shearing crusher for primary crushing after the car tire is processed by a ring cutting machine; and then, sending the tire raw material after the primary crushing into a high-speed shearing crusher for secondary crushing to obtain a tire piece with the diameter of 30-50 mm.

(2) Sending the tyre piece into a rolling machine to separate steel wires from rubber;

(3) sending the rubber sheet separated in the step (2) into a first reaction axe 2, introducing cooling water into the first reaction axe 2, wherein the rubber material is soft, so that the effect of the cooling water is better than that of normal-temperature water, and the ratio of the rubber sheet to the cooling water is 1: 9; an outlet at the lower part of the first reaction kettle 2 is communicated with an inlet of the grinding and grinding pump 3, and an outlet of the grinding and grinding pump 3 is communicated with an inlet of the first reaction kettle 2; circularly crushing the rubber sheet and cooling water between the first reaction kettle 2 and the crushing and grinding pump 3 until the rubber sheet is ground into rubber powder with the diameter of 200-300 microns;

(4) inputting a mixed solution of rubber powder and cooling water into a second reaction kettle 4, wherein an outlet below the second reaction kettle 4 is communicated with an inlet of a superfine grinding pump 5, and an outlet of the superfine grinding pump 5 is communicated with an inlet of the second reaction kettle 4; circularly crushing and grinding the rubber powder by a hyperfine crushing and grinding pump 5 and a second reaction kettle 4 until the diameter of the rubber powder is ground to 30-70 μm;

(5) and (3) inputting the rubber powder mixed liquid obtained in the step (4) into a centrifuge 6 for solid-liquid separation, wherein the centrifuge 6 is a two-phase horizontal screw centrifuge, a discharging hopper of the centrifuge 6 is communicated with a screw conveyor, rubber powder particles separated from the centrifuge 6 are conveyed to a dryer 8 through a vibrating distributor 7 for drying treatment through the screw conveyor, cooling water separated from the centrifuge 6 returns to the first reaction kettle 2 again for reuse, and the rubber powder dried through the dryer 8 is packaged through a packaging machine 9 and then stored 10.

In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.