阅读说明：本技术 一种高温协同强化再生骨料的设备及使用方法 (Equipment for high-temperature cooperative reinforcement of recycled aggregate and use method ) 是由 张垚 王业 陈虎 吴浩辰 顾倩俪 吴宇浩 于 2020-12-11 设计创作，主要内容包括：本发明公开一种高温协同强化再生骨料的设备及使用方法,包括骨料高温协同强化系统、降温筛分系统和调节系统,骨料高温协同强化系统包括强化滚筒、红外加热板、红外温度探测器、耐高温耐磨玻璃、隔热降噪外壁、电机和配套支架,降温筛分系统包括分级料筛、接料漏斗、底座振动器和配套支架,调节系统包括红外温控器、滚筒转速转圈调节器、筛分控制器和配套支架。本发明将经过粗破碎的废弃水泥路面骨料进行进一步高温处理,使得骨料表面的水泥砂浆脱水脆化,进而强化脱离骨料表面,得到符合道路规范要求的骨料。降低了建筑垃圾对环境的污染,减少对自然骨料的消耗。(The invention discloses equipment for high-temperature cooperative reinforcement of recycled aggregate and a using method thereof. The method further carries out high-temperature treatment on the coarsely crushed waste cement pavement aggregate, so that cement mortar on the surface of the aggregate is dehydrated and embrittled, and is further strengthened to be separated from the surface of the aggregate, and the aggregate meeting the road specification requirement is obtained. Reduces the pollution of the construction waste to the environment and reduces the consumption of natural aggregate.)

1. The equipment for high-temperature cooperative reinforcement of recycled aggregate is characterized in that: comprises that

The high-temperature cooperative reinforcement aggregate system comprises a high-temperature cooperative reinforcement aggregate system, a cooling screening system and an adjusting system, wherein the high-temperature cooperative reinforcement aggregate system comprises a motor (1), a reinforcement roller (2), an infrared heating plate (3), an infrared temperature detector (4), a heat-preservation noise-reduction outer wall (5), a grinding steel ball (9), a baffle (10), a discharge/storage port (11), a fiber partition wall (12) and a supporting bracket, wherein the outer wall of the reinforcement roller (2) is the heat-preservation noise-reduction outer wall (5), the inner wall of the reinforcement roller is the fiber partition wall (12), the infrared heating plate (3) is arranged at the fiber partition wall (12), the grinding steel ball (9) and the baffle (10) are arranged in the reinforcement roller (2), and the discharge/storage port (11) is arranged on the wall; the cooling and screening system comprises a grading material screen (6), a material receiving funnel (7), a base vibrator (8) and a supporting support, wherein the material receiving funnel (7) is connected with a strengthening roller (2), the material receiving funnel (7) is sequentially connected with the grading material screen (6) and the base vibrator (8), and an adjusting system comprises an infrared temperature controller, a roller rotating speed rotating ring adjuster, a screening controller and the supporting support.

2. The apparatus for high-temperature cooperative reinforcement of recycled aggregate according to claim 1, wherein: the reinforced roller (2) grinds the aggregate at a high temperature, and a motor (1) is arranged at the roller shaft.

3. The apparatus for high-temperature cooperative reinforcement of recycled aggregate according to claim 1, wherein: the infrared heating plates (3) are arranged on two sides in the strengthening roller (2), and aggregate can reach preset temperature according to the set temperature.

4. The apparatus for high-temperature cooperative reinforcement of recycled aggregate according to claim 1, wherein: the infrared temperature detector (4) monitors the temperature in the roller in real time, and when the temperature reaches a set temperature, a high-speed rotation strengthening mode is started.

5. The apparatus for high-temperature cooperative reinforcement of recycled aggregate according to claim 1, wherein: the inner side of the heat-insulating noise-reducing outer wall (5) is made of a heat-insulating material, and the outer side of the heat-insulating noise-reducing outer wall is made of a noise-reducing material.

6. The apparatus for high-temperature cooperative reinforcement of recycled aggregate according to claim 1, wherein: the reinforced roller (2) is wide in the middle, narrow in two sides and circular in cross section.

7. The apparatus for high-temperature cooperative reinforcement of recycled aggregate according to claim 1, wherein: and a fiber material separating wall (12) is arranged on the inner side of the infrared heating plate (3).

8. Use of a device according to any of claims 1-7, characterized in that: the method comprises the following specific steps:

step 1, putting the recycled aggregate at normal temperature or preheated into a strengthening roller (2), starting an infrared heating device (3) and a roller low-speed rotation mode, wherein the low-speed rotation speed is 10r/min, so that the aggregate in a barrel is uniformly and fully heated; when the infrared temperature detector (4) detects that the temperature reaches the preset temperature, the high-speed rotation strengthening mode of the roller is started, the high-speed rotation speed is 30 r/min-120 r/min, and the number of turns is counted by minutes and is multiplied by the time of the corresponding rotation speed. Can be adjusted according to the condition of the aggregate and the required strengthening effect;

step 2, the aggregate rotates in the roller at a preset rotating speed and a preset rotating ring, the aggregate is driven by a baffle (10) to reach the highest point to fall freely, and under the action of gravitational potential energy and rotational energy, the dehydrated and embrittled mortar is separated from the surface of the recycled aggregate through the impact between the aggregate and the roller, the impact between the aggregate and the collision between the aggregate and a grinding steel ball (9);

step 3, stopping rotating the roller after the roller reaches a preset number of turns, and turning a feed inlet in the roller downwards to enable the desized aggregate to reach a grading material sieve (6) through a receiving hopper (7) and to contact with air to achieve a cooling effect; opening the base vibrating screen (8), and screening the desized aggregate through vibration;

and 4, circulating the steps 1-3, heating, mechanically reinforcing and vibrating the residual recycled aggregate, and taking out the desized aggregate in layers after the screening is finished and the temperature is reduced to obtain the reinforced recycled aggregate.

9. The apparatus for high-temperature cooperative reinforcement of recycled aggregate according to claim 8, wherein: and (4) preheating the recycled aggregate by rotating at a low speed, and performing high-speed reinforcement after the recycled aggregate reaches the preset temperature.

Technical Field

The invention belongs to the technical field of highway recycled aggregate reinforcement, and particularly relates to equipment for high-temperature synergistic reinforcement of recycled aggregate and a using method thereof.

Background

After a cement concrete pavement is used for a period of time, the pavement needs to be dismantled for various reasons, and a large amount of waste cement concrete is generated. The natural aggregate is used as a natural resource, so that mining and utilization are saved, the natural aggregate is used for road construction after being processed, and a large amount of energy is consumed for mining and processing, and the environment is damaged. Therefore, the cement concrete after being dismantled is recycled, so that the resources can be saved, and the environment is improved and protected to a certain extent.

Currently, recycling of waste cement concrete includes physical and chemical strengthening methods. The physical strengthening comprises methods such as mechanical grinding, grinding after high-temperature treatment and the like, the methods have serious abrasion to mechanical equipment and generate larger noise, the grinding after the high-temperature treatment cannot keep the mortar on the surface of the aggregate to be dehydrated and embrittled all the time, the grinding difficulty is increased, the grinding effect is reduced, heat transfer is generated when the hot aggregate is in contact with the atmosphere, heat loss is generated, and the waste of energy is increased.

Disclosure of Invention

The invention aims to overcome the defects and provides equipment for high-temperature cooperative reinforcement of recycled aggregate and a using method thereof, so that the energy loss is effectively reduced, the aggregate grinding effect is improved, the noise is reduced, and the manual operation is saved.

The equipment for high-temperature cooperative reinforcement of the recycled aggregate comprises a high-temperature cooperative reinforcement system, a cooling screening system and a regulating system. The high-temperature cooperative strengthening system comprises a strengthening roller, an infrared heating plate, an infrared temperature detector, a heat-insulating noise-reducing outer wall, a motor and a matched support, the cooling and screening system comprises a grading material screen, a material receiving hopper, a base vibrator and a matched support, and the adjusting system comprises an infrared temperature controller, a roller rotating speed rotating ring adjuster, a screening controller and a matched support.

The outer wall of the reinforced roller is a heat-insulating noise-reducing outer wall, the inner wall of the reinforced roller is a fiber material-separating wall, an infrared heating plate is arranged at the position of the fiber material-separating wall, a grinding steel ball and a baffle are arranged in the reinforced roller, and in addition, a discharge/storage port is arranged on the wall of the reinforced roller.

The material receiving funnel is connected with the strengthening roller and is sequentially connected with the grading material sieve and the base vibrator.

The method further carries out high-temperature treatment on the coarsely crushed waste cement pavement aggregate, so that cement mortar on the surface of the aggregate is dehydrated and embrittled, and is separated from the surface of the aggregate through strengthening, so that the aggregate meeting the road specification requirement is obtained. Reduces the pollution of the construction waste to the environment and reduces the consumption of natural aggregate.

A use method of high-temperature synergistic reinforced recycled aggregate comprises the following steps:

(1) putting the recycled aggregate at normal temperature or preheated into a strengthening roller, and starting an infrared heating device and a low-speed rotation mode of the roller to uniformly and fully heat the aggregate in the barrel; and when the infrared temperature detector detects that the temperature reaches the preset temperature, starting a high-speed rotation strengthening mode of the roller.

(2) The aggregate rotates in the roller at a preset rotating speed and a preset rotating ring, the aggregate is driven by the baffle to fall freely at the highest point, and under the action of gravitational potential energy and rotational energy, the dehydrated and embrittled mortar is separated from the surface of the recycled aggregate through the impact between the aggregate and the roller, the impact between the aggregate and the collision between the aggregate and the grinding steel balls.

(3) Stopping rotating the roller after the preset number of turns is reached, and downwards overturning a feed port in the roller to enable desized aggregate to reach a graded material sieve surface through a material receiving funnel and to contact with air to achieve a cooling effect; and starting a base vibrator, and screening the desized aggregate through vibration.

(4) And (3) heating, mechanically strengthening and vibrating the remaining recycled aggregate in the steps (1), (2) and (3), and after the screening is finished and the temperature is reduced, taking out the desized aggregate in a layering manner to obtain the strengthened recycled aggregate.

The high-temperature cooperative reinforcement recycled aggregate equipment can realize factory large-scale production, has wide application prospect in the technical field of recycling of building wastes, and has the following advantages:

(1) by adopting the process, the physical strengthening effect of the aggregate can be improved, the aggregate is uniformly heated, the mortar on the surface of the aggregate is dehydrated and embrittled, the mortar is favorably removed, and the service performance of the aggregate is improved.

(2) The process can reduce energy loss and noise pollution, and the heat insulating and noise reducing wall can reduce energy loss caused by heat transfer and noise caused by collision between aggregate and aggregate, between aggregate and the strengthening roller and between aggregate and the grinding steel balls.

(3) By adopting the process, the heating temperature, the rotating speed and the number of rotating turns of the strengthening roller can be adjusted according to actual requirements, so that the strengthening effect required by the aggregate is achieved.

(4) The process can realize the flow line operation, the temperature in the drum is kept at a certain level after the strengthening, so that the next batch of aggregates can quickly meet the temperature requirement and carry out high-speed rotation strengthening, screening and strengthening separate operation, the operation efficiency can be accelerated, the screened aggregates can be directly applied to the building engineering according to the requirements, and the process has the comprehensive benefits of collecting society, economy and environment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a device capable of realizing high-temperature cooperative reinforcement of recycled aggregate in the invention.

Fig. 2 is a vertical sectional view of fig. 1.

Fig. 3 is a large radius transverse cross-sectional view of fig. 1.

Fig. 4 is a small radius transverse cross-sectional view of fig. 1.

FIG. 5 is a flow chart of a method for using the high-temperature cooperative reinforcement recycled aggregate equipment of the invention.

1. A motor; 2. strengthening the roller; 3. an infrared heating plate; 4. an infrared temperature detector; 5. a heat-insulating noise-reducing outer wall; 6. grading and screening the materials; 7. a receiving hopper; 8. a base vibrator; 9. grinding the steel balls; 10. a baffle plate; 11. a discharge/storage port; 12. a fibrous insulation wall.

Detailed Description

The invention will be further explained with reference to the drawings

Example 1

As shown in fig. 1, 2, 3 and 4, the equipment for high-temperature cooperative reinforcement of recycled aggregate comprises a motor 1, a reinforcement roller 2, an infrared heating plate 3, an infrared temperature detector 4, a heat-insulating and noise-reducing outer wall 5, a grading material sieve 6, a material receiving funnel 7, a base vibrator 8, a grinding steel ball 9, a baffle 10, a discharge/storage port 11 and a fiber material-separating wall 12. The components form a high-temperature synergistic reinforced aggregate system, a cooling and screening system and an adjusting system. The outer wall of the reinforced roller 2 is a heat-insulating noise-reducing outer wall 5, the inner wall of the reinforced roller is a fiber material-separating wall 12, an infrared heating plate 3 is arranged at the position of the fiber material-separating wall 12, a grinding steel ball 9 and a baffle plate 10 are arranged in the reinforced roller 2, and in addition, a discharge/storage port 11 is arranged on the wall of the reinforced roller 2; the cooling and screening system comprises a grading material screen 6, a material receiving funnel 7, a base vibrator 8 and a matched support, wherein the material receiving funnel 7 is connected with the reinforced roller 2, the material receiving funnel 7 is sequentially connected with the grading material screen 6 and the base vibrator 8, and the adjusting system comprises an infrared temperature controller, a roller rotating speed rotating ring adjuster, a screening controller and a matched support.

After integration, a complete set of process steps covering heating of waste concrete, strengthening and screening is obtained, and the equipment use flow is shown in fig. 5 and is specifically implemented as follows:

(1) unreinforced aggregate is put into the reinforced roller through the material outlet/storage port, the sealing cover is covered, and the motor 1 drives the reinforced roller 2 to rotate at a low speed. Meanwhile, the aggregate is heated by the infrared heating plate 3, and is uniformly and fully heated in the process of driving the baffle 10 to rotate and heat, so that later-stage reinforcement is facilitated.

(2) When the infrared temperature detector 4 detects that the temperature reaches the set temperature, the strengthening roller 2 is started to rotate at a high speed to strengthen the mode, the roller performs rotation strengthening according to the preset rotating speed and the number of turns, aggregate effectively removes mortar on the surface of the aggregate through impact with the roller wall, impact between the aggregate and abrasion of the aggregate and the grinding steel ball 9, and when the number of turns reaches the preset number of turns, the roller stops rotating. The roller achieves the effects of heat preservation and noise reduction through the heat-insulation noise-reduction outer wall 5, reduces energy consumption and simultaneously reduces noise pollution.

(3) The roller is opened to enable the discharge hole to face downwards, reinforced aggregate reaches the grading material sieve 6 through the material receiving funnel 7, and the base vibrator 8 enables the aggregate to be finally sieved through vibration to obtain recycled aggregate with different particle sizes.