CN218249919U

CN218249919U - Environment-friendly high-mixing-amount rubber composite modified asphalt preparation system

Info

Publication number: CN218249919U
Application number: CN202221565773.0U
Authority: CN
Inventors: 李晓暾; 路永春; 吕弘煜; 杨平文; 关蕴涛; 张翰中; 周晓雨; 王凯
Original assignee: Gansu Gonghanglv Low Carbon Technology Co ltd
Current assignee: Gansu Gonghanglv Low Carbon Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2023-01-10
Anticipated expiration: 2032-06-22

Abstract

The utility model provides a compound modified asphalt preparation system of high volume rubber of doping of environment-friendly, including the pitch heating jar that is used for heating pitch, the bottom of pitch heating jar is connected with first conveying pipeline, first conveying pipeline is connected with the blending tank, and the bottom of blending tank is connected with the second conveying pipeline, the middle part of second conveying pipeline is equipped with the high-speed cutter of first pitch, and masterbatch swelling jar is connected to the second conveying pipeline, masterbatch swelling jar is connected with the third conveying pipeline, the third conveying pipeline is connected with and mixes the jar in advance, mix the jar in advance and be connected with the fourth conveying pipeline, be equipped with the high-speed cutter of second pitch on the fourth conveying pipeline, the fourth conveying pipeline is connected with the finished product and develops the jar. The utility model discloses a blending tank and mix jar in advance add rubber granule and SBS in pitch manufacturing process to pitch respectively to grind through the high-speed cutter and mix, whole process is high-efficient swift.

Description

Environment-friendly high-mixing-amount rubber composite modified asphalt preparation system

Technical Field

The utility model belongs to the technical field of the pitch production, a compound modified asphalt preparation system of environment-friendly high volume rubber is related to.

Background

The rubber modified asphalt prepared by adding the waste tire rubber powder into the asphalt is a durable and environment-friendly road material, and the technology is popularized and matured day by day. With the fluctuation of the international crude oil market in this year, the price of petroleum derived products rises. The rubber powder, especially the waste tire powder, has sufficient raw materials and steadily reduced price, and has extremely obvious cost advantage compared with other high polymer modifiers. Therefore, the development and production of high-content waste tires gradually become a new feasible cost-reducing mode.

However, the composite modified asphalt with high rubber content increases the proportion (up to 30%) of waste tyre powder in the formula and production, and has more severe requirements on production process and equipment. At present, no related production line with the waste tire powder mixing amount up to 30 percent exists in the existing equipment, and part of enterprises producing test water are production lines which continue to use or partially modify the common mixing amount, so the factory result detection of the finished products prepared by production is often not ideal, and the production speed is slower.

In the production of the high-mixing-amount rubber composite modified asphalt, because a large amount of waste tire powder is mixed, the links of curing, shearing, swelling and the like in the production have larger difference requirements with the original low mixing amount, and a new composite modified asphalt preparation system which can adapt to the high mixing amount of the waste tire powder is continuously designed and processed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of poor effect and slow speed of the preparation of modified asphalt in the prior art, and provides a system for preparing environment-friendly high-doping-amount rubber composite modified asphalt with good and quick preparation effect.

Therefore, the utility model adopts the following technical proposal:

the utility model provides a compound modified asphalt preparation system of environment-friendly high volume rubber, is including the pitch heating jar that is used for heating pitch, the bottom of pitch heating jar is connected with first conveying pipeline, first conveying pipeline is connected with the blending tank, the top of blending tank is equipped with first charge door, and the bottom of blending tank is connected with the second conveying pipeline, the middle part of second conveying pipeline is equipped with the high-speed cutter of first pitch, and the second conveying pipeline is connected with the masterbatch swelling jar, the masterbatch swelling jar is connected with the third conveying pipeline, the third conveying pipeline is connected with mixes the jar in advance, mix the top of jar in advance and be equipped with the second charge door, mix the jar in advance and be connected with the fourth conveying pipeline, be equipped with the high-speed cutter of second pitch on the fourth conveying pipeline, the fourth conveying pipeline is connected with the finished product and develops the jar.

Furthermore, a first asphalt pump is arranged on the first conveying pipe, a second asphalt pump is arranged on the second conveying pipe, a third asphalt pump is arranged on the third conveying pipe, and a fourth asphalt pump is arranged on the fourth conveying pipe.

Furthermore, the outer wall of the asphalt heating tank is provided with an electric heating wire.

Further, a heat exchanger is arranged on the first conveying pipeline.

Furthermore, a flow device is arranged on the first material conveying pipe.

Furtherly, the one end that is equipped with first pivot and first pivot in the blending tank stretches out from the top of blending tank, is equipped with a plurality of first puddlers on the first pivot, and the top of first pivot is connected with and is used for driving first pivot pivoted first motor.

Furtherly, be equipped with the second pivot that becomes the level setting and the one end of second pivot in mixing in advance the jar is worn out from mixing in advance the lateral wall of jar, the middle part of second pivot is equipped with a plurality of connecting rods along its circumference, the one end that the second pivot was kept away from to the connecting rod is equipped with the second puddler that is the level setting, the outer end of second pivot is connected with and is used for driving second pivot pivoted second motor.

Further, the heat exchanger is a spiral plate type heat exchanger.

The beneficial effects of the utility model reside in that: :

(1) The utility model discloses a blending tank and mix jar in advance, add rubber granule and SBS in pitch manufacturing process in pitch respectively, and grind the mixture through the high-speed cutter of first pitch, the clearance sets up to 0.8 mm, the swelling of rethread swelling tank, the pump sending is to mixing jar in advance, automatic weighing adds SBS simultaneously, later get into the high-speed cutter of second pitch once more, the clearance sets up to 0.4mm, twice high-speed cutter cuts and grinds clearance doubling number reduction, the ladder guarantees the degree of consistency behind the heavily doped rubber powder entering composite asphalt, with guarantee that ultimate finished product testing result can both be qualified on four indexes of assurance stability test at high temperature rut splitting test, the low temperature bending test, freeze thawing test, it can all be qualified on four indexes of residual stability test.

(2) The utility model is put into use, can realize industrialization of the preparation of the high-content rubber composite modified asphalt, has high efficiency and rapidness in the whole process, and can greatly improve the production and processing efficiency of the new product of the high-content rubber composite modified asphalt; on one hand, waste tire rubber powder is digested, the environmental protection pressure is reduced, on the other hand, the product quality can be guaranteed while the raw material cost is reduced, the economic benefit of an enterprise can be greatly improved, and the method is worthy of popularization.

Drawings

FIG. 1 is a schematic view of the present invention;

in the figure, 1-asphalt heating tank, 2-electric heating wire, 3-first material conveying pipe, 4-heat exchanger, 5-flow device, 6-mixing tank, 7-first feeding port, 8-first rotating shaft, 9-first stirring rod, 10-first motor, 11-second material conveying pipe, 12-first asphalt high-speed shearing machine, 13-master batch swelling tank, 14-third material conveying pipe, 15-premixing tank, 16-second feeding port, 17-fourth material conveying pipe, 18-second asphalt high-speed shearing machine, 19-finished product development tank, 20-first asphalt pump, 21-second asphalt pump, 22-third asphalt pump, 23-fourth asphalt pump, 24-second rotating shaft, 25-connecting rod, 26-second stirring rod and 27-second motor.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1, an environment-friendly high-volume rubber composite modified asphalt preparation system comprises an asphalt heating tank 1 for heating asphalt, the asphalt heating tank 1 is made of stainless steel, an outer wall of the asphalt heating tank 1 is provided with a heating wire 2, the asphalt in the asphalt heating tank 1 is heated through the heating wire 2, the bottom of the asphalt heating tank 1 is connected with a first delivery pipe 3, the middle of the first delivery pipe 3 is provided with a heat exchanger 4, specifically, the heat exchanger 4 is a spiral plate heat exchanger, the first delivery pipe 3 is also provided with a flow meter 5, the flow meter 5 can be an existing conventional flow meter, the flow meter is used for accurately grasping the asphalt volume, the first delivery pipe 3 is connected with a mixing tank 6, the top of the mixing tank 6 is provided with a first feed inlet 7, rubber particles can be added into the mixing tank 6 through the first feed inlet 7, so that the rubber particles are mixed with the asphalt, a first rotating shaft 8 is arranged in the mixing tank 6, one end of the first rotating shaft 8 extends out of the top of the mixing tank 7, a plurality of first rotating shafts 9 are arranged on the first rotating shaft 8, the first rotating shaft can drive a first rotating motor 10, and the first rotating shaft 9 is connected with a first rotating motor 10.

The bottom of the mixing tank 7 is connected with a second conveying pipe 11, the middle of the second conveying pipe 11 is provided with a first asphalt high-speed shearing machine 12, the first asphalt high-speed shearing machine 12 can crush rubber particles in the second conveying pipe 11 and mix the rubber particles with asphalt into a whole, the second conveying pipe 11 is connected with a master batch swelling tank 13, the master batch swelling tank 13 can be formed by adopting a conventional swelling tank, the master batch swelling tank 13 is connected with a third conveying pipe 14, the third conveying pipe 14 is connected with a premixing tank 15, the top of the premixing tank 15 is provided with a second feed port 16, a second SBS can be added into the premixing tank 15 through the second feed port 16, a second rotating shaft 24 horizontally arranged in the master batch swelling tank 15 and one end of the second rotating shaft 24 penetrates out of the side wall of the premixing tank 15, the middle of the second rotating shaft 24 is provided with a plurality of connecting rods 25 along the circumferential direction thereof, one end of each connecting rod 25 far away from the second rotating shaft 24 is provided with a second stirring rod 26 horizontally arranged, the outer end of the second rotating shaft 24 is connected with a second motor 27 for driving the second rotating shaft 24 to rotate, the second rotating rod 26 can drive the second rotating rod to rotate from the second rotating shaft 24, the second stirring rod 17, the fourth stirring rod 17, the SBS can uniformly descend from the mixing tank 17 through the mixing tank 17, the upper surface of the conventional mixing tank 17, the four high-speed shearing machine 17, and the four high-speed shearing machine 17 is connected with a conventional asphalt mixing tank, the SBS can, and the SBS can uniformly descend the asphalt.

In addition, in order to make the asphalt flow in the pipeline, a first asphalt pump 20 is arranged on the first conveying pipeline 3, a second asphalt pump 21 is arranged on the second conveying pipeline 11, a third asphalt pump 22 is arranged on the third conveying pipeline 14, and a fourth asphalt pump 23 is arranged on the fourth conveying pipeline 17.

The utility model discloses an use the scene as follows:

the adopted mixing amounts are respectively as follows: 70.33-78.85% of Zhehai 90# substrate asphalt, 20-30% of waste tire cured rubber particles, 1.5-3.0% of Yueyang petrochemical SBS791-H modifier and 0.15-0.17% of stabilizer.

Type 4 of heat exchanger: 180m ² Spiral plate heat exchanger, NB/T47048-2015, heat exchanger plant of Wuxi city;

the first asphalt high-speed shearing machine is a high-speed shearing homogenizing mill (JMJ-20) produced by Zhejiang Shanghai pump industry Co., ltd, the gap is set to be 0.8 mm, the low-speed shearing is carried out for 5min, the high-speed shearing is carried out for 10min, the production efficiency is 17T/H, and the milling temperature is 195 ℃;

the second pitch high-speed shearing machine is a high-speed shearing homogenizing mill for Douwei-Shih production, the gap is set to be 0.4mm, the production efficiency is 13T/H, the high-speed shearing is carried out for 8min, and the milling temperature is 190 ℃.

Firstly, adding a proper amount of asphalt into an asphalt heating tank 1, starting an electric heating wire 2 to heat the asphalt in the asphalt heating tank 1 to increase the fluidity of the asphalt, enabling the heated asphalt to flow into a mixing tank 6 through a first material conveying pipe 3 under the action of a first asphalt pump 20, enabling a heat exchanger 4 to heat the asphalt again when the heated asphalt passes through the first material conveying pipe 3, preventing the temperature of the asphalt from being reduced due to the fact that the temperature of the asphalt is reduced after the asphalt enters the first material conveying pipe 3 through the heat exchanger 4, accurately metering the asphalt amount through a flow meter 5 in the process so as to control the addition amount of rubber particles, adding the rubber particles into the mixing tank 6 through a feeding port 7 after the asphalt enters the mixing tank 6 through the first material conveying pipe 3, starting a first motor 10 after the rubber particles are added, driving a first rotating shaft 8 and a first stirring rod 9 to rotate, and uniformly mixing the rubber particles into the asphalt, then, a second asphalt pump 21 is started, asphalt in the mixing tank 6 is conveyed into a master batch swelling tank 13 through a second conveying pipe 11, when the asphalt passes through the second conveying pipe 11, the asphalt in the second conveying pipe 11 can be mixed with rubber into a whole and ground by a first asphalt high-speed shearing machine 12, the mixed asphalt can be swelled in the master batch swelling tank 13, the swelled asphalt is input into a premixing tank 15 through the third conveying pipe 13 under the action of a third asphalt pump 22, SBS (791-H) is added into the premixing tank 15 from a second feed port 16, a second motor 27 is started to drive the second rotating shaft 24 to rotate, then the second rotating shaft 24 rotates through a connecting rod 25 and a second stirring rod 26, SBS floating on the upper surface of the asphalt descends to be uniformly mixed with the asphalt through the rotation of the second stirring rod 26, and finally, a fourth asphalt pump 23 can be started, the asphalt in the premixing tank 15 is input into a finished product development tank 19 through a fourth conveying pipeline 17, SBS is mixed into the asphalt through a second asphalt high-speed shearing machine 18 and ground, and finally the finished product modified asphalt is prepared through the finished product development tank 19.

The product produced by the process is sampled and detected, and the result is as follows:

taking the product 3 to form a SUP-13 mixture test piece, wherein the high-temperature rutting test, the low-temperature bending test, the freeze-thaw splitting test and the residual stability test result are as follows:

it can be seen that the industrialization of the utility model can ensure that the high-content rubber composite modified asphalt is produced, and all performances of the product can meet the technical requirements.

Claims

1. The utility model provides a compound modified asphalt preparation system of environment-friendly high volume of mixing rubber, a serial communication port, including the pitch heating jar that is used for heating pitch, the bottom of pitch heating jar is connected with first conveying pipeline, first conveying pipeline is connected with the blending tank, the top of blending tank is equipped with first charge door, and the bottom of blending tank is connected with the second conveying pipeline, the middle part of second conveying pipeline is equipped with the high-speed cutter of first pitch, and the second conveying pipeline is connected with the masterbatch swelling jar, the masterbatch swelling jar is connected with the third conveying pipeline, the third conveying pipeline is connected with and mixes the jar in advance, the top of mixing the jar in advance is equipped with the second charge door, it is connected with the fourth conveying pipeline to mix the jar in advance, be equipped with the high-speed cutter of second pitch on the fourth conveying pipeline, and the fourth conveying pipeline is connected with the finished product and grows the jar.

2. The system of claim 1, wherein a first asphalt pump is disposed on the first feeding pipe, a second asphalt pump is disposed on the second feeding pipe, a third asphalt pump is disposed on the third feeding pipe, and a fourth asphalt pump is disposed on the fourth feeding pipe.

3. The system for preparing environment-friendly high-content rubber composite modified asphalt according to claim 1 or 2, wherein the outer wall of the asphalt heating tank is provided with an electric heating wire.

4. The system for preparing environment-friendly high-content rubber composite modified asphalt as claimed in claim 3, wherein a heat exchanger is arranged on the first conveying pipeline.

5. The system as claimed in claim 4, wherein a flow meter is disposed on the first delivery pipe.

6. The system for preparing environment-friendly high-content rubber composite modified asphalt according to claim 5, wherein a first rotating shaft is arranged in the mixing tank, one end of the first rotating shaft extends out of the top of the mixing tank, a plurality of first stirring rods are arranged on the first rotating shaft, and the top end of the first rotating shaft is connected with a first motor for driving the first rotating shaft to rotate.

7. The system for preparing environment-friendly high-volume rubber composite modified asphalt according to claim 5, wherein a second rotating shaft horizontally arranged is arranged in the premixing tank, one end of the second rotating shaft penetrates out of the side wall of the premixing tank, a plurality of connecting rods are arranged in the middle of the second rotating shaft along the circumferential direction of the second rotating shaft, a second stirring rod horizontally arranged is arranged at one end, away from the second rotating shaft, of each connecting rod, and the outer end of the second rotating shaft is connected with a second motor for driving the second rotating shaft to rotate.

8. The system for preparing environment-friendly high-content rubber composite modified asphalt according to claim 4, wherein the heat exchanger is a spiral plate heat exchanger.