阅读说明：本技术 一种阶梯型乳化沥青冷再生拌和设备 (Step-type emulsified asphalt cold-recycling mixing equipment ) 是由 范祥东 于立广 王敬东 刘佳奇 宋鹏 亢朝阳 崔浩然 于 2021-10-26 设计创作，主要内容包括：本发明公开了一种阶梯型乳化沥青冷再生拌和设备,包括有机架、设置于机架上且相互连接的上阶梯拌缸和下阶梯拌缸,上阶梯拌缸底端的水平高度高于下阶梯拌缸顶端的水平高度。通过上阶梯拌缸将部分水与粗集料、细集料、粉料进行初步拌和,下阶梯拌缸再加入剩余水和乳化沥青,实现再生沥青混合料(RAP)的粗集料、细集料、粉料、水和乳化沥青的均匀混合,解决了拌合时间控制和设备超负荷的问题。(The invention discloses stepped emulsified asphalt cold regeneration mixing equipment which comprises a rack, and an upper stepped mixing cylinder and a lower stepped mixing cylinder which are arranged on the rack and connected with each other, wherein the horizontal height of the bottom end of the upper stepped mixing cylinder is higher than the horizontal height of the top end of the lower stepped mixing cylinder. Part of water is primarily mixed with coarse aggregates, fine aggregates and powder materials through the upper stepped mixing cylinder, and the rest water and emulsified asphalt are added into the lower stepped mixing cylinder, so that the uniform mixing of the coarse aggregates, the fine aggregates, the powder materials, the water and the emulsified asphalt of a regenerated asphalt mixture (RAP) is realized, and the problems of mixing time control and equipment overload are solved.)

1. The utility model provides a notch cuttype emulsified asphalt cold recycling mixing equipment which characterized in that: the horizontal height of the bottom end of the upper stepped mixing cylinder is higher than that of the top end of the lower stepped mixing cylinder;

the upper stepped mixing cylinder is provided with a coarse aggregate feeding port, a fine aggregate feeding port, a powder feeding port and a discharging port, the coarse aggregate feeding port and the fine aggregate feeding port are arranged at the front part of the upper stepped mixing cylinder, the coarse aggregate feeding port is positioned in front of the fine aggregate feeding port, the bottom end of the coarse aggregate feeding hopper faces towards the input end of a coarse aggregate conveying belt, the bottom end of the fine aggregate feeding hopper faces towards the input end of the fine aggregate conveying belt, the output end of the coarse aggregate conveying belt is connected with the coarse aggregate feeding port, the output end of the fine aggregate conveying belt is connected with the fine aggregate feeding port, the powder feeding port is arranged at the top end of the upper stepped mixing cylinder and is positioned behind the fine aggregate feeding port, the powder feeding port is connected with a powder dispersing hopper, and the discharging port is positioned at the bottom end of the upper stepped mixing cylinder and is adjacent to the rear end of the upper stepped mixing cylinder; the top end of the upper stepped mixing cylinder is provided with a water spraying device communicated with the interior of the upper stepped mixing cylinder, the water spraying device is arranged at the rear part of the upper stepped mixing cylinder, a first stirring shaft, a plurality of first stirring arms connected to the first stirring shaft and a first stirring blade connected to each first stirring arm are arranged in the upper stepped mixing cylinder, the first stirring shaft is in transmission connection with a front driving mechanism arranged at the front end of the upper stepped mixing cylinder, and the outer ends of the first stirring blades face the rear end of the upper stepped mixing cylinder;

the lower step mixing cylinder is provided with a feed inlet and a feed outlet, the feed inlet is arranged at the top end of the lower step mixing cylinder and is adjacent to the front end of the lower step mixing cylinder, the feed inlet and the discharge outlet of the upper step mixing cylinder are mutually communicated through a connecting hopper, the feed outlet is arranged at the bottom end of the lower step mixing cylinder and is adjacent to the rear end of the lower step mixing cylinder, and the feed outlet is connected with a feeding hopper; the top end of the lower stepped mixing cylinder is provided with two emulsified asphalt and water spraying devices communicated with the interior of the lower stepped mixing cylinder, one emulsified asphalt and water spraying device is arranged at the front part of the lower stepped mixing cylinder, the other emulsified asphalt and water spraying device is arranged at the middle part of the lower stepped mixing cylinder, a second stirring shaft, a plurality of second stirring arms connected to the second stirring shaft and second stirring blades connected to each second stirring arm are arranged in the lower stepped mixing cylinder, the second stirring shaft is in transmission connection with a rear driving mechanism arranged at the rear end of the lower stepped mixing cylinder, the outer ends of the second stirring blades on two thirds of the second stirring arms face the rear end of the lower stepped mixing cylinder, and the outer ends of the second stirring blades on one third of the second stirring arms face the front end of the lower stepped mixing cylinder;

the lower step mixing cylinder is provided with a section of tail end adjustable cylinder body adjacent to the rear end, the tail end adjustable cylinder body is a double-layer nested telescopic cylinder body, the double-layer nested cylinder bodies are mutually sleeved and in sealing contact, the whole length of the lower step mixing cylinder is adjusted through telescopic adjustment of the tail end adjustable cylinder body, and a second stirring shaft in the range of the tail end adjustable cylinder body is a movable connecting section, so that the lower step mixing cylinder is convenient to install and disassemble.

2. The stepped cold-recycling emulsified asphalt mixing device as claimed in claim 1, wherein: the water spraying device comprises a circular water spraying pipe and a plurality of water spraying nozzles connected to the circular water spraying pipe.

3. The stepped cold-recycling emulsified asphalt mixing device as claimed in claim 2, wherein: the two emulsified asphalt and water spraying devices respectively comprise a round water spraying pipe and a square emulsified asphalt spraying pipe which are arranged in parallel, a plurality of water spraying nozzles connected to the round water spraying pipe and a plurality of emulsified asphalt nozzles connected to the square emulsified asphalt spraying pipe, every two emulsified asphalt nozzles are in one group, and each group of emulsified asphalt nozzles are arranged in a splayed shape; the circular spray pipe of water jet equipment, two emulsified asphalt and water sprinkler's circular spray pipe all is connected with external main supply pipe, and two emulsified asphalt and water sprinkler's square emulsified asphalt spray pipe all is connected with external emulsified asphalt main feed pipe, all is provided with flow control valve and electromagnetic flowmeter on main supply pipe and the emulsified asphalt main feed pipe, and is provided with pipe heater on the emulsified asphalt main feed pipe.

4. The stepped cold-recycling emulsified asphalt mixing device as claimed in claim 1, wherein: the included angle between the first stirring blade and the rotating surface of the first stirring shaft is 100-140 degrees; the included angle between the second stirring blade and the rotating surface of the second stirring shaft is 100-140 degrees.

5. The stepped cold-recycling emulsified asphalt mixing device as claimed in claim 1, wherein: and the outer end of the second stirring blade on the second stirring arm adjacent to the rear end of the lower-step stirring cylinder faces the front end of the lower-step stirring cylinder.

6. The stepped cold-recycling emulsified asphalt mixing device as claimed in claim 1, wherein: go up the ladder and mix the jar and be provided with two first (mixing) shafts in, all be connected with a plurality of first rabbling arms on every first (mixing) shaft, the first rabbling arm on two first (mixing) shafts is staggered arrangement structure.

7. The stepped cold-recycling emulsified asphalt mixing device as claimed in claim 1, wherein: two second stirring shafts are arranged in the lower step stirring cylinder, each second stirring shaft is connected with a plurality of second stirring arms, and the second stirring arms on the two second stirring shafts are in a staggered arrangement structure; the outer ends of two-thirds second stirring blades on each second stirring shaft face the rear end of the lower stepped stirring cylinder, the outer ends of one-third second stirring blades on each second stirring shaft face the front end of the lower stepped stirring cylinder, the outer ends of the second stirring blades face the rear end of the lower stepped stirring cylinder, the second stirring blades face the front end of the lower stepped stirring cylinder and are forward second stirring blades, the outer ends of the second stirring blades face the front end of the lower stepped stirring cylinder and are reverse second stirring blades, forward second stirring blades are arranged on two adjacent second stirring arms of each second stirring shaft, the two adjacent second stirring arms are a set of forward second stirring arms, the second stirring arm provided with the reverse second stirring blade is a reverse second stirring arm, and a reverse second stirring arm is arranged between two sets of adjacent forward second stirring arms on each second stirring shaft.

Technical Field

The invention relates to the technical field of production of recycled asphalt mixtures, in particular to stepped emulsified asphalt cold recycling mixing equipment.

Background

Along with the development of highway transportation, that is, a highway can not meet the transportation requirement, the energy expansion and reconstruction of the road are imperative, the application of the waste asphalt pavement is wider and wider, the exploitation of mineral aggregate is saved, the waste of construction waste is reduced, and the investment cost is reduced. Cold regeneration mixture mixing equipment is the key of whole technology, and the accuracy of spraying and measurement of emulsified asphalt to and the mix homogeneity of various gradation match to influence the performance of mixture, and then influence the wholeness ability and the engineering quality of cold regeneration flexible basic unit, produce the influence to subsequent road surface construction life.

Disclosure of Invention

The invention aims to solve the technical problem of providing stepped emulsified asphalt cold-recycling mixing equipment, which ensures that an emulsified asphalt cold-recycling mixture is continuously and stably mixed, thereby reducing the performance deviation of the mixture caused by instability of the equipment and having positive influence on the construction period, the engineering quality and the overall benefit.

The technical scheme of the invention is as follows:

a step-type emulsified asphalt cold regeneration mixing device comprises a frame, an upper step mixing cylinder and a lower step mixing cylinder which are arranged on the frame and connected with each other, wherein the horizontal height of the bottom end of the upper step mixing cylinder is higher than that of the top end of the lower step mixing cylinder;

the upper stepped mixing cylinder is provided with a coarse aggregate feeding port, a fine aggregate feeding port, a powder feeding port and a discharging port, the coarse aggregate feeding port and the fine aggregate feeding port are arranged at the front part of the upper stepped mixing cylinder, the coarse aggregate feeding port is positioned in front of the fine aggregate feeding port, the bottom end of the coarse aggregate feeding hopper faces towards the input end of a coarse aggregate conveying belt, the bottom end of the fine aggregate feeding hopper faces towards the input end of the fine aggregate conveying belt, the output end of the coarse aggregate conveying belt is connected with the coarse aggregate feeding port, the output end of the fine aggregate conveying belt is connected with the fine aggregate feeding port, the powder feeding port is arranged at the top end of the upper stepped mixing cylinder and is positioned behind the fine aggregate feeding port, the powder feeding port is connected with a powder dispersing hopper, and the discharging port is positioned at the bottom end of the upper stepped mixing cylinder and is adjacent to the rear end of the upper stepped mixing cylinder; the top end of the upper stepped mixing cylinder is provided with a water spraying device communicated with the interior of the upper stepped mixing cylinder, the water spraying device is arranged at the rear part of the upper stepped mixing cylinder, a first stirring shaft, a plurality of first stirring arms connected to the first stirring shaft and a first stirring blade connected to each first stirring arm are arranged in the upper stepped mixing cylinder, the first stirring shaft is in transmission connection with a front driving mechanism arranged at the front end of the upper stepped mixing cylinder, and the outer ends of the first stirring blades face the rear end of the upper stepped mixing cylinder;

the lower step mixing cylinder is provided with a feed inlet and a feed outlet, the feed inlet is arranged at the top end of the lower step mixing cylinder and is adjacent to the front end of the lower step mixing cylinder, the feed inlet and the discharge outlet of the upper step mixing cylinder are mutually communicated through a connecting hopper, the feed outlet is arranged at the bottom end of the lower step mixing cylinder and is adjacent to the rear end of the lower step mixing cylinder, and the feed outlet is connected with a feeding hopper; the top end of the lower stepped mixing cylinder is provided with two emulsified asphalt and water spraying devices communicated with the interior of the lower stepped mixing cylinder, one emulsified asphalt and water spraying device is arranged at the front part of the lower stepped mixing cylinder, the other emulsified asphalt and water spraying device is arranged at the middle part of the lower stepped mixing cylinder, a second stirring shaft, a plurality of second stirring arms connected to the second stirring shaft and second stirring blades connected to each second stirring arm are arranged in the lower stepped mixing cylinder, the second stirring shaft is in transmission connection with a rear driving mechanism arranged at the rear end of the lower stepped mixing cylinder, the outer ends of the second stirring blades on two thirds of the second stirring arms face the rear end of the lower stepped mixing cylinder, and the outer ends of the second stirring blades on one third of the second stirring arms face the front end of the lower stepped mixing cylinder;

the lower step mixing cylinder is provided with a section of tail end adjustable cylinder body adjacent to the rear end, the tail end adjustable cylinder body is a double-layer nested telescopic cylinder body, the double-layer nested cylinder bodies are mutually sleeved and in sealing contact, the whole length of the lower step mixing cylinder is adjusted through telescopic adjustment of the tail end adjustable cylinder body, and a second stirring shaft in the range of the tail end adjustable cylinder body is a movable connecting section, so that the lower step mixing cylinder is convenient to install and disassemble.

The water spraying device comprises a circular water spraying pipe and a plurality of water spraying nozzles connected to the circular water spraying pipe.

The two emulsified asphalt and water spraying devices respectively comprise a round water spraying pipe and a square emulsified asphalt spraying pipe which are arranged in parallel, a plurality of water spraying nozzles connected to the round water spraying pipe and a plurality of emulsified asphalt nozzles connected to the square emulsified asphalt spraying pipe, every two emulsified asphalt nozzles are in one group, and each group of emulsified asphalt nozzles are arranged in a splayed shape; the circular spray pipe of water jet equipment, two emulsified asphalt and water sprinkler's circular spray pipe all is connected with external main supply pipe, and two emulsified asphalt and water sprinkler's square emulsified asphalt spray pipe all is connected with external emulsified asphalt main feed pipe, all is provided with flow control valve and electromagnetic flowmeter on main supply pipe and the emulsified asphalt main feed pipe, and is provided with pipe heater on the emulsified asphalt main feed pipe.

The included angle between the first stirring blade and the rotating surface of the first stirring shaft is 100-140 degrees; the included angle between the second stirring blade and the rotating surface of the second stirring shaft is 100-140 degrees.

And the outer end of the second stirring blade on the second stirring arm adjacent to the rear end of the lower-step stirring cylinder faces the front end of the lower-step stirring cylinder.

Go up the ladder and mix the jar and be provided with two first (mixing) shafts in, all be connected with a plurality of first rabbling arms on every first (mixing) shaft, the first rabbling arm on two first (mixing) shafts is staggered arrangement structure.

Two second stirring shafts are arranged in the lower step stirring cylinder, each second stirring shaft is connected with a plurality of second stirring arms, and the second stirring arms on the two second stirring shafts are in a staggered arrangement structure; the outer ends of two-thirds second stirring blades on each second stirring shaft face the rear end of the lower stepped stirring cylinder, the outer ends of one-third second stirring blades on each second stirring shaft face the front end of the lower stepped stirring cylinder, the outer ends of the second stirring blades face the rear end of the lower stepped stirring cylinder, the second stirring blades face the front end of the lower stepped stirring cylinder and are forward second stirring blades, the outer ends of the second stirring blades face the front end of the lower stepped stirring cylinder and are reverse second stirring blades, forward second stirring blades are arranged on two adjacent second stirring arms of each second stirring shaft, the two adjacent second stirring arms are a set of forward second stirring arms, the second stirring arm provided with the reverse second stirring blade is a reverse second stirring arm, and a reverse second stirring arm is arranged between two sets of adjacent forward second stirring arms on each second stirring shaft.

The invention has the advantages that:

(1) in order to solve the problems of mixing time control and equipment overload, an upper stepped mixing cylinder and a lower stepped mixing cylinder are arranged, part of water is preliminarily mixed with coarse aggregates, fine aggregates and powder materials through the upper stepped mixing cylinder, and the rest of water and emulsified asphalt are added into the lower stepped mixing cylinder, so that the uniform mixing of the coarse aggregates, the fine aggregates, the powder materials, the water and the emulsified asphalt of a regenerated asphalt mixture (RAP) is realized;

(2) the coarse aggregate feeding hopper and the fine aggregate feeding hopper are vertically arranged and adopt the conveying belt to convey feeding materials, so that the purpose that the coarse aggregates and the fine aggregates enter the upper stepped mixing cylinder step by step is realized, mineral powder and cement powder are uniformly distributed in the mixed aggregates through the powder dispersing hopper, and the spatial position arrangement of the upper stepped mixing cylinder is optimized;

(3) in all the second stirring arms in the lower-step stirring cylinder, the outer ends of the second stirring blades on two-thirds of the second stirring arms face the rear end of the lower-step stirring cylinder, and the outer ends of the second stirring blades on one-third of the second stirring arms face the front end of the lower-step stirring cylinder, so that the pushing speed of the mixture is reduced, and the stirring time is prolonged;

(4) the outer end of the stirring blade on the second stirring arm adjacent to the rear end of the lower step stirring cylinder faces the front end of the lower step stirring cylinder, so that the mixed regenerated asphalt mixture can smoothly enter the discharging hopper;

(5) the stirring performance of the cold-recycling mixture directly determines the construction quality of a paved road surface, under the condition that a stirring method is determined, the influence of stirring time on the mixture is large, the stirring time is short, the emulsified asphalt is unevenly wrapped, white materials are easily generated, the stirring time is too long, the moisture of the emulsified asphalt is easily lost, and the emulsified asphalt is suitable for demulsification in advance;

(6) all be provided with flow control valve and electromagnetic flowmeter on water main supply pipe and the emulsified asphalt main feed pipe, the quantity of accurate control water and emulsified asphalt is provided with pipe heater on the emulsified asphalt main feed pipe, heats it before emulsified asphalt main feed pipe opens, prevents the jam of emulsified asphalt sprinkler pipe and emulsified asphalt shower nozzle.

Drawings

Fig. 1 is a schematic top view of the present invention.

Fig. 2 is a schematic front view of the present invention.

Reference numerals: 1-upper stepped mixing cylinder, 2-lower stepped mixing cylinder, 3-coarse aggregate feeding hopper, 4-coarse aggregate conveying belt, 5-fine aggregate feeding hopper, 6-fine aggregate conveying belt, 7-powder dispersing hopper, 8-water sprayer, 9-first mixing shaft, 10-first mixing arm, 11-first mixing blade, 12-front driving mechanism, 13-connecting hopper, 14-lower hopper, 15-emulsified asphalt and water sprayer, 16-second mixing shaft, 17-second mixing arm, 18-second mixing blade, 19-rear driving mechanism and 20-end adjustable cylinder body.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, a stepped emulsified asphalt cold recycling mixing device comprises a frame, an upper stepped mixing cylinder 1 and a lower stepped mixing cylinder 2 which are arranged on the frame and connected with each other, wherein the horizontal height of the bottom end of the upper stepped mixing cylinder 1 is higher than the horizontal height of the top end of the lower stepped mixing cylinder 2;

the upper stepped mixing cylinder 1 is provided with a coarse aggregate feeding port, a fine aggregate feeding port, a powder feeding port and a discharging port, the coarse aggregate feeding port and the fine aggregate feeding port are both arranged at the front part of the upper stepped mixing cylinder 1, the coarse aggregate feeding port is positioned in front of the fine aggregate feeding port, the bottom end of a coarse aggregate feeding hopper 3 faces the input end of a coarse aggregate conveying belt 4, the bottom end of a fine aggregate feeding hopper 5 faces the input end of a fine aggregate conveying belt 6, the output end of the coarse aggregate conveying belt 4 is connected with the coarse aggregate feeding port, the output end of the fine aggregate conveying belt 6 is connected with the fine aggregate feeding port, the powder feeding port is arranged at the top end of the upper stepped mixing cylinder 1 and is positioned behind the fine aggregate feeding port, the powder feeding port is connected with a powder dispersing hopper 7, and the discharging port is positioned at the bottom end of the upper stepped mixing cylinder 1 and is adjacent to the rear end of the upper stepped mixing cylinder 1; the top end of the upper stepped mixing cylinder 1 is provided with a water spraying device 8 communicated with the interior of the upper stepped mixing cylinder 1, the water spraying device 8 is arranged at the rear part of the upper stepped mixing cylinder 1, two first stirring shafts 9 are arranged in the upper stepped mixing cylinder 1, a plurality of first stirring arms 10 connected to each first stirring shaft 9 and first stirring blades 11 connected to each first stirring arm 10, the two first stirring shafts 9 are in transmission connection with a front driving mechanism 12 arranged at the front end of the upper stepped mixing cylinder 1, the first stirring arms 10 on the two first stirring shafts 9 are in a staggered arrangement structure, the included angle between the rotating surfaces of the first stirring blades 11 and the first stirring shafts 9 is 140 degrees, and the outer ends of the first stirring blades 11 face the rear end of the upper stepped mixing cylinder 1;

the lower step mixing cylinder 2 is provided with a feed inlet and a feed outlet, the feed inlet is arranged at the top end of the lower step mixing cylinder 2 and is adjacent to the front end of the lower step mixing cylinder 2, the feed inlet and the discharge outlet of the upper step mixing cylinder are mutually communicated through a connecting hopper 13, the feed outlet is arranged at the bottom end of the lower step mixing cylinder 2 and is adjacent to the rear end of the lower step mixing cylinder 2, and the feed outlet is connected with a feed hopper 14; the top end of the lower step mixing cylinder 2 is provided with two emulsified asphalt and water spraying devices 15 communicated with the interior of the lower step mixing cylinder 2, one emulsified asphalt and water spraying device 15 is arranged at the front part of the lower step mixing cylinder 2, the other emulsified asphalt and water spraying device 15 is arranged at the middle part of the lower step mixing cylinder 2, two second stirring shafts 16, a plurality of second stirring arms 17 connected to each second stirring shaft 16 and second stirring blades 18 connected to each second stirring arm 17 are arranged in the lower step mixing cylinder, the second stirring shafts 16 are in transmission connection with a rear driving mechanism 19 arranged at the rear end of the lower step mixing cylinder 2, the second stirring arms 17 on the two second stirring shafts 16 are in a staggered arrangement structure, and the included angle between the second stirring blades 18 and the rotating surface of the second stirring shafts 16 is 140 degrees; in the two second stirring shafts 16, the outer end of two-thirds of the second stirring blades 18 on each second stirring shaft 16 faces the rear end of the lower stepped stirring cylinder 2, the outer end of one-third of the second stirring blades 18 on each second stirring shaft 16 faces the front end of the lower stepped stirring cylinder 2, the second stirring blades 18 with outer ends facing the rear end of the lower stepped stirring cylinder 2 are forward second stirring blades, the second stirring blades 18 with outer ends facing the front end of the lower stepped stirring cylinder 2 are reverse second stirring blades, two adjacent second stirring arms 17 of each second stirring shaft 16 are provided with forward second stirring blades, the two adjacent second stirring arms 17 are a group of forward second stirring arms, the second stirring arm 17 provided with a reverse second stirring blade is a reverse second stirring arm, a reverse second stirring arm is arranged between two adjacent groups of forward second stirring arms on each second stirring shaft 16, and the outer end of the second stirring blade 18 on the second stirring arm 17 adjacent to the rear end of the lower step stirring cylinder 2 faces the front end of the lower step stirring cylinder 2;

the lower step mixing cylinder 2 is provided with a section of tail end adjustable cylinder body 20 adjacent to the rear end, the tail end adjustable cylinder body 20 is a double-layer nested telescopic cylinder body, the double-layer nested cylinder bodies are mutually sleeved and in sealing contact, the whole length of the lower step mixing cylinder is adjusted through the telescopic adjustment of the tail end adjustable cylinder body 20, and the second stirring shaft 16 in the range of the tail end adjustable cylinder body 20 is a movable connecting section, so that the lower step mixing cylinder is convenient to install and disassemble.

Wherein, the water spraying device 8 comprises a circular water spraying pipe and a plurality of water spraying nozzles connected with the circular water spraying pipe; the two emulsified asphalt and water spraying devices 15 respectively comprise a round water spraying pipe and a square emulsified asphalt spraying pipe which are arranged in parallel, a plurality of water spraying nozzles connected to the round water spraying pipe and a plurality of emulsified asphalt nozzles connected to the square emulsified asphalt spraying pipe, every two emulsified asphalt nozzles are in one group, and each group of emulsified asphalt nozzles are arranged in a splayed shape; the circular spray pipe of water jet equipment 8, two emulsified asphalt and the circular spray pipe of water sprinkler 15 all are connected with external main water supply pipe, and the square emulsified asphalt spray pipe of two emulsified asphalt and water sprinkler 15 all is connected with external emulsified asphalt main feed pipe, all is provided with flow control valve and electromagnetic flowmeter on main water supply pipe and the emulsified asphalt main feed pipe, and is provided with pipe heater on the emulsified asphalt main feed pipe.

The working principle of the invention is as follows:

(1) when the regenerated asphalt mixture is mixed, firstly, two kinds of coarse aggregates are fed into the front part of an upper stepped mixing cylinder 1 through a coarse aggregate feeding hopper 3 and a coarse aggregate conveying belt 4 to be mixed, then two kinds of fine aggregates are fed into the middle part of the upper stepped mixing cylinder 1 through a fine aggregate feeding hopper 5 and a fine aggregate conveying belt 6, two kinds of powder of mineral powder and cement are fed into the middle part of the upper stepped mixing cylinder 1 through a powder dispersing hopper 7 to be scattered in the aggregates, meanwhile, water is supplied into the upper stepped mixing cylinder for the first time through a water spraying device 8, and the mixed aggregates are fed into a lower stepped mixing cylinder 2 through a connecting hopper 13 after being mixed for the first time;

(2) two emulsified asphalt and water spraying devices 15 in the lower step mixing cylinder 2 spray emulsified asphalt and water for multiple times in a segmented mode, the finished product mixture is pushed to a feed opening through a second stirring shaft 16, is sent out through a feed hopper 14, is conveyed to a finished product bin through a conveying belt, and is loaded and conveyed to the site.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.