CN210711405U - Novel rubber powder modified asphalt production facility - Google Patents

Abstract

The utility model discloses a novel rubber powder modified asphalt production facility, production facility include the connecting tube of premixing equipment, development equipment and connection premixing equipment and development equipment. The inner wall of the premixing cavity is provided with an asphalt pipeline and a heat conducting oil pipe, nozzles are distributed on the asphalt pipeline, a baffle is welded on the inner wall of the premixing cavity, the upper part of a motor of premixing equipment is respectively connected with an auger type stirrer and a blade type stirrer through a coupler, and mixing holes are distributed on the auger type stirrer and the blade type stirrer; the bottom of the premixing cavity is tapered and is simultaneously provided with a filter plate, the premixing cavity is connected to the development equipment through a discharge pipeline, and a plurality of stirring blades are fixed in an inner barrel of the development equipment and are driven to rotate through a motor of the development equipment. The rubber powder and the matrix asphalt can be quickly and uniformly premixed, and the phenomena of bottom sinking, wall sticking and the like of the rubber powder in the premixing equipment are reduced; the mixing uniformity of the rubber asphalt in the development equipment is improved.

Description

Novel rubber powder modified asphalt production facility

Technical Field

The utility model belongs to the technical field of the pitch processing, concretely relates to novel rubber powder modified asphalt production facility.

Background

In recent years, with the continuous development of national economy, the highway traffic industry in China develops rapidly, the kilometers of high-grade pavements steadily rise year by year, and most of pavement materials are paved by adopting asphalt mixtures. In order to reduce the damage of asphalt pavement and save maintenance cost, the improvement of pavement performance of matrix asphalt by using a modifier has become an indispensable technology. The matrix asphalt is modified by adopting the rubber powder made from waste tires, and the components of natural rubber, carbon black and the like in the waste tires can be utilized, so that the high-temperature stability of the asphalt mixture can be improved, the low-temperature cracking phenomenon can be reduced, and the pavement performance of the asphalt mixture can be comprehensively improved. Meanwhile, with the rapid development of the automobile industry, the number of waste tires is increased year by year, and data shows that the production amount of waste tires in China in 2017 is over 1300 million tons, and the waste tires are increased by 6 to 8 percent per year, and the number of waste tires produced in 2019 is expected to be over 3.8 million. At present, the recovery treatment of waste tires is an international problem, and the method adopted by various countries is to stack and bury the waste tires, so that the waste tires can occupy a large amount of land resources due to stacking in the open air, and a fire disaster is easy to happen under direct sunlight, and a larger loss is caused. Meanwhile, the waste tires are extremely difficult to degrade under natural conditions, and can also be decomposed to generate secondary pollutants such as dioxin, furan and the like, which is called black pollution. The rubber asphalt technology is used as a green and environment-friendly road construction and maintenance technology which changes waste into valuable, can generate great social benefit and economic benefit, and is paid great attention at home and abroad.

However, the existing rubber powder modified asphalt production equipment is still imperfect, has no unified national standard, is designed and modified by enterprises in many ways, and has the phenomena of long premixing time, uneven stirring, uneven mixing of rubber powder such as bottom sinking and wall sticking and the like.

Disclosure of Invention

In order to solve the problems, the utility model provides a novel rubber powder modified asphalt production device, which can quickly and uniformly mix rubber powder and matrix asphalt and reduce the phenomena of bottom sinking, wall sticking and the like of rubber powder in the premixing device; the mixing uniformity of the rubber asphalt in the development equipment is improved.

In order to achieve the above object, the utility model relates to a novel rubber powder modified asphalt production facility is including mixing in advance equipment, development equipment and connecting the connecting tube of mixing in advance equipment and development equipment.

The upper part of the premixing equipment is provided with a rubber powder bag disassembling device, the upper part of the rubber powder bag disassembling device is provided with a feeding door, the lower part of the feeding door is a feeding cavity, the middle part of the feeding cavity is provided with a disassembling knife, the device comprises a push rod and a rubber powder bag collecting cavity, wherein a first butterfly valve and a weighing device feeding port are arranged at the bottom of the feeding cavity, the weighing device feeding port is in flexible connection with the rubber powder weighing cavity, a weighing sensor is arranged on the side surface of the rubber powder weighing cavity, a second butterfly valve and a weighing device discharging port are arranged at the bottom of the rubber powder weighing cavity, the rubber powder weighing cavity is in flexible connection with the weighing device discharging port, an asphalt pipeline and a heat conduction oil pipe are arranged on the inner wall of the premixing cavity, nozzles are distributed on the asphalt pipeline, a baffle is welded on the inner wall of the premixing cavity, two premixing equipment motors are arranged at the bottom of the premixing equipment, the upper parts of the two premixing equipment motors are respectively connected with an auger type stirrer and a paddle type stirrer; the bottom of the premixing cavity is tapered and is provided with a filter plate, the bottom of the premixing cavity is provided with a premixing device outflow port, the lower part of the right side of the premixing device is provided with a premixing device backflow port, the left side of the upper part of the outer wall of the premixing device is provided with a rubber bag collecting cavity outlet, the left side of the lower part of the outer wall is provided with a matrix asphalt inlet, the bottom of the premixing device is provided with a support, and the bottom.

The outflow port of the premixing equipment is connected with a discharge pipeline, the discharge pipeline is connected to the development equipment, a high-viscosity asphalt pump and a reversing valve are mounted on the discharge pipeline, the development equipment is provided with an outer barrel and an inner barrel, a heat conduction oil pipe is mounted on the inner wall of the outer barrel, a plurality of ball supports are fixed at the bottom of the outer barrel, balls are arranged on the ball supports, and the balls are connected with the inner barrel. The inner wall of the inner barrel is welded with stirring blades, and mixing holes are distributed on the stirring blades. A development equipment feeding port is arranged in the middle of the left side wall of the inner barrel, the development equipment feeding port is connected with the tail of the discharge pipeline, a development equipment backflow port is arranged at the lower part of the left side of the inner barrel and connected with a backflow pipeline, an electromagnetic valve is arranged on the development equipment backflow port, a compression hose and an electromagnetic contact are arranged at the front end of the backflow pipeline, a high-viscosity asphalt pump and a reversing valve are arranged on the backflow pipeline, the tail of the backflow pipeline is connected to a backflow port of the premixing equipment, the backflow pipeline can realize the reprocessing of unqualified rubber asphalt, and the production quality of the rubber; the production can be adjusted according to production requirements. The lower part of the right side of the inner barrel is provided with a development equipment outflow port, the structure of the outflow mode of the development equipment outflow port is the same as that of a development equipment return port, the middle part of the right side of the inner barrel is connected with a development equipment motor, and the bottom of the development equipment is provided with a damping device.

A production method of novel rubber powder modified asphalt comprises the steps that base asphalt is measured by a flowmeter, passes through an asphalt pipeline under the action of an asphalt pump and is sprayed out from a nozzle; putting the weighed rubber powder into a premixing cavity; stirring the matrix asphalt and the rubber powder in a premixing cavity by a paddle type stirrer and an auger type stirrer, and feeding the stirred rubber asphalt into an inner barrel from an outflow port of premixing equipment and a discharge pipeline; the inner barrel rotates around the axis, and all rubber asphalt materials are turned over to prevent rubber powder from sinking; the rubber asphalt after swelling development flows out through the outflow opening of the development equipment.

And further, when the developed rubber asphalt is unqualified in detection, the rubber asphalt flows back into the premixing cavity through a backflow port of the development equipment, and a proper amount of rubber powder is added again for stirring production.

Compared with the prior art, the utility model discloses following profitable technological effect has at least: the paddle type stirrer mainly generates axial flow and radial flow, the auger type stirrer can generate a vortex-shaped flow field, the two stirrers are matched for stirring, the stirring uniformity is improved, meanwhile, the installation positions of the two stirrers are not symmetrical along the axis, the complexity of the flow field in the premixing cavity is further enhanced, and the stirring uniformity is improved; the baffle is arranged on the inner wall of the premixing cavity, so that tangential flow can be changed into axial flow, and the mixing uniformity is further improved; the premixed rubber asphalt enters the development equipment, and the whole inner barrel rotates by taking the axis of the barrel body as a central shaft under the driving of a motor of the development equipment, so that the effect of preventing rubber powder from sinking is better compared with the existing development equipment. Asphalt pipelines and nozzles are distributed and arranged on the inner wall of the premixing cavity, so that the mixing of rubber powder and asphalt can be improved during feeding, and the caking phenomenon of the rubber powder can be reduced under the impact of asphalt spraying.

Furthermore, a rubber powder bag disassembling device is arranged on the upper portion of the premixing equipment, so that bagged rubber powder can be disassembled conveniently, the rubber powder bag slides into a disassembling knife under the action of gravity to be cut, rubber powder particles slide to the bottom of the feeding cavity, and waste rubber powder bags enter the rubber powder bag collecting cavity under the action of the push rod.

Further, the upper portion of the premixing cavity is provided with a rubber powder weighing cavity, a weighing device feeding port is formed in the top wall of the rubber powder weighing cavity, a weighing device discharging port is formed in the lower wall of the rubber powder weighing cavity, a second butterfly valve is arranged at the weighing device discharging port, a weighing sensor is installed on the side portion of the rubber powder weighing cavity, the rubber powder weighing cavity is in flexible connection with the weighing device feeding port and the weighing device discharging port, the rubber powder weighing cavity is communicated with the premixing cavity through the weighing device discharging port, the weighing sensor provides a changing current signal to the PLC at a sampling frequency of 50Hz-70Hz, the PLC performs scanning detection in a sequential circulating working mode, and the. The rubber powder particles flow through the butterfly valve and the feeding hole of the weighing device to enter the rubber powder weighing cavity, and the automatic weighing and feeding are realized through the weighing sensor, the butterfly valve and the PLC, so that the feeding process is simplified, the occupied area is reduced, and the working intensity of constructors is reduced. When the rubber powder is not thrown, the feeding door is in a closed state, so that the scattering of rubber powder particles is reduced, and meanwhile, the waste rubber powder bags are treated in a centralized manner, so that the environmental pollution to a construction area is reduced;

the discharge pipelines of the two premixing devices are connected, and share two reversing valves and the high-viscosity asphalt pump, so that the manufacturing cost and the occupied area are reduced. The utility model discloses be equipped with two development equipment, can use simultaneously or the single use according to the different demands of production, be equipped with rubber asphalt return line simultaneously, if rubber asphalt after developing is not up to standard, accessible return line gets into in the pre-mixing equipment, adds the rubber powder and stirs production again.

Furthermore, the auger type stirrer and the blade type stirrer are provided with mixing holes, so that the power consumption of the motor can be reduced, and the mixing uniformity is improved; the mixing holes on the paddle type stirrer are arranged in a staggered mode, so that the flow direction distribution in the premixing cavity is more complicated, and the mixing effect is improved; the stirring blades have radian, can bring more rubber asphalt materials, and have better stirring effect; the stirring blades are divided into three types, the stirring blades are not provided with the mixing holes, are distributed with the second mixing holes and are distributed with the third mixing holes, and the three stirring blades are arranged in a staggered mode, so that the power consumption of a motor of the development equipment can be reduced, the flow direction of a flow field can be complicated, and the mixing effect is improved.

Furthermore, electromagnetic contacts are arranged on the backflow pipeline and the outflow pipeline of the development equipment, so that automatic butt joint of the pipelines can be realized, and convenience and rapidness are realized.

Furthermore, the bottom of the premixing cavity is provided with a filter plate, so that agglomerated rubber powder cannot flow out, and the uniformity of the premixed rubber asphalt is further ensured.

Furthermore, the aperture range on the filter plate is 30mm-70mm to adapt to the production of different rubber asphalts, and the aperture of the same filter plate is the same.

Furthermore, the upper part of the feeding cavity is tapered, so that the rubber powder bag can slide into the position of the disassembling knife under the action of gravity, the blades of the disassembling knife are densely arranged, and the rubber powder bag cannot enter the lower part of the feeding cavity.

Furthermore, the multilayer asphalt pipelines are transversely arranged in the premixing cavity, the asphalt pipelines and the nozzles are densely distributed in the premixing cavity, and 12 nozzles are uniformly distributed on each asphalt pipeline, so that the high-efficiency spraying of asphalt is guaranteed, the mixing efficiency is improved, and the function of scattering agglomerated rubber powder is achieved.

Furthermore, the bottom of the development equipment is provided with a damping device, and the directions of the springs on the two sides are mutually vertical, so that the vibration in multiple directions can be reduced, the reduction of the vibration and noise during production is facilitated, and the service life of the equipment is prolonged. Damping device is four damping support in total, and every damping support is equipped with six damping spring, and damping spring arranges the direction mutually perpendicular, can reduce the vibrations that each direction produced, and damping device adopts the screw to link to each other with the outer barrel bottom of development equipment, easy dismounting.

Furthermore, heat conducting oil pipes are arranged on the inner wall of the premixing cavity and in the development equipment, so that the heat insulation performance is good.

Furthermore, the bottom of the premixing cavity is tapered, so that the rubber asphalt can flow out conveniently.

A novel rubber powder modified asphalt production method is characterized in that matrix asphalt and rubber powder are stirred in a premixing cavity through a paddle type stirrer and an auger type stirrer, the paddle type stirrer mainly generates axial flow and radial flow, the auger type stirrer can generate a vortex-shaped flow field, the two stirrers are matched for stirring, the stirring uniformity is improved, the premixed rubber asphalt enters development equipment, and under the driving of a motor of the development equipment, the whole inner barrel rotates by taking a barrel axis as a central axis, so that the rubber powder sinking prevention effect is better compared with the existing development equipment.

Furthermore, when the developed rubber asphalt is unqualified in detection, the rubber asphalt flows back into the premixing cavity through the backflow port of the development equipment, and a proper amount of rubber powder is added again for stirring production, so that the product quality is improved.

Drawings

FIG. 1 is a sectional view of the main structure of the present invention;

FIG. 2 is a full sectional view of the premix apparatus;

FIG. 3 is a full sectional view of the development apparatus;

FIG. 4 is a connecting conduit between the premixing apparatus and the development apparatus;

FIG. 5 is a schematic diagram of the operation of the electromagnetic contacts;

FIG. 6 is a paddle agitator;

FIG. 7 is an auger-type agitator;

FIG. 8 is a cross-sectional view of a development device mixing blade.

Wherein: 1. a feeding door, 2, a push rod, 3, a dismantling knife, 4, a feeding cavity, 5, a first butterfly valve, 6, a weighing sensor, 7, a screw type stirrer, 8, a paddle type stirrer, 9, an asphalt pipeline, 10, a nozzle, 11, a first heat-conducting oil pipe, 12, a baffle plate, 13, a premixing device return port, 14, a filter plate, 15, a premixing device outlet port, 16, a rubber pad, 17, a premixing device motor, 18, a bracket, 19, a coupling, 20, a matrix asphalt inlet port, 21, a premixing cavity, 22, a first mixing hole, 23, a second butterfly valve, 24, a weighing device outlet port, 25, a rubber powder weighing cavity, 26, a rubber powder bag collecting cavity, 27, a rubber powder bag collecting cavity outlet, 28, a weighing device inlet port, 29, an outer barrel, 30, a second heat-conducting oil pipe, 31, a development device motor, 32, an inner barrel, 33, a stirring blade, 34, a development device outlet port, 35. the device comprises balls, 36, a ball support, 37, a damping device, 38, a return pipeline, 39, a compression hose, 40, an electromagnetic contact, 41, an electromagnetic valve, 42, a development equipment return port, 43, a development equipment feed port, 44, a second mixing hole, 45, a third mixing hole, 46, a reversing valve, 47, a high-viscosity asphalt pump, 48-a shell, 49-a discharge pipeline, 100, premixing equipment, 200 and development equipment.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, a new type of rubber powder modified asphalt production equipment includes two pre-mixing devices 100, two development devices 200, and a pipeline connecting the pre-mixing devices 100 and the development devices 200.

As shown in fig. 2, a feeding door 1 is installed at the top of the premixing equipment, a plurality of disassembling knives 3 are installed in a feeding cavity 4 side by side, the disassembling knives 3 are installed on a power output shaft of a disassembling motor, an opening used for passing through a push rod 2 is formed in the side wall of the feeding cavity 4, a rubber powder bag collecting cavity 26 is arranged on one side, opposite to the opening, of the feeding cavity 4, and an outlet 27 of the rubber powder bag collecting cavity is formed in the bottom of the rubber powder bag collecting cavity 26. The bottom of the feeding cavity 4 is provided with a first butterfly valve 5 and a weighing device feeding port 28, a rubber powder weighing cavity 25 is arranged below the weighing device feeding port 28, the bottom of the rubber powder weighing cavity 25 is provided with a second butterfly valve 23 and a weighing device discharging port 24, a weighing sensor 6 is arranged on the side portion of the rubber powder weighing cavity 25, the rubber powder weighing cavity 25 is in flexible connection with the weighing device feeding port 28 and the weighing device discharging port 24, a premixing cavity 21 is arranged below the weighing device discharging port 24, the inner wall of the premixing cavity 21 is provided with an asphalt pipeline 9, a first heat conduction oil pipe 11 and a baffle plate 12, wherein the asphalt pipeline 9 and the first heat conduction oil pipe 11 are transversely arranged along the inner wall of the premixing cavity 21, the baffle plate 12 is longitudinally arranged, the asphalt pipeline 9 is uniformly provided with 12 nozzles 10, the left position of the outer wall of the bottom of the premixing cavity 21 is provided with two premixing device motors 17, and the two premixing device motors 17 are, first mixing holes 22 are uniformly distributed on the auger type stirrer 7 and the blade type stirrer 8, the right side of the bottom of the premixing cavity 21 is provided with a premixing equipment outlet 15, and a filter plate 14 is arranged at the position of the premixing equipment outlet 15; the two sides of the lower part of the premixing device shell 48 are respectively provided with a matrix asphalt inlet 20 and a premixing device return port 13, the matrix asphalt inlet 20 is communicated with the asphalt pipeline 9, and the premixing device return port 13 is communicated with the premixing cavity 21. The bottom of the premixing device is provided with a bracket 18, and the bottom of the bracket 18 is provided with a rubber pad 16. The support 18 at the bottom of the premixing equipment is formed by welding square steel, the operation is simple and feasible, and the rubber pad 16 is arranged at the bottom of the support, so that the functions of relieving vibration and reducing noise are achieved.

As shown in fig. 3, the development equipment comprises an outer barrel 29, an inner barrel 32 is arranged in the outer barrel 29, a development equipment inlet 43 is arranged at the left side axis position of the inner barrel 32, the development equipment inlet 43 is connected with a premixing equipment outlet 15 through a pipeline, a development equipment motor 31 is fixed at the right side axis position of the outer barrel 29, the inner barrel 32 is installed on a power output shaft of the development equipment motor 31, the development equipment motor 31 drives the inner barrel 32 to rotate, a ball support 36 is fixed on the inner wall of the outer barrel 29, balls 35 are arranged on the ball support 36, the ball 35 supports the inner barrel 32 to rotate around the inner barrel axis, a plurality of stirring blades 33 with radian (diameter range of 800mm-1000mm) are welded on the inner wall of the inner barrel 32 along the circumferential direction, second mixing holes 44 and third mixing holes 45 are distributed on the adjacent stirring blades 33 in a staggered manner, the second mixing, the inner wall of the outer barrel 29 is provided with a second heat conducting oil pipe 30, the bottom of the inner barrel 32 close to the premixing device 100 is provided with a development device return opening 42, the right side of the bottom of the inner barrel 32 is provided with a development device outflow opening 34, and the bottom of the outer barrel 29 is provided with four damping devices 37.

Preferably, the stirring blades in the development equipment have radian, the diameter range of the stirring blades is 800-1000mm, the stirring blades are divided into three types, the stirring blades are non-mixing holes, distributed with second mixing holes and distributed with third mixing holes, the three types of stirring blades are arranged in a staggered mode, the diameter range of the second mixing holes is 5-20mm, and the width range of the third mixing holes is 5-20mm, so that the development equipment is suitable for production of different types of rubber asphalt.

As shown in fig. 4, the rubber asphalt after the pre-mixing is finished flows out from the outflow port 15 of the pre-mixing device, and flows to the feeding port 43 of the development device through two reversing valves 46 under the action of a high-viscosity asphalt pump 47; the rubber asphalt to be refluxed flows out from the developing equipment reflux port 42, flows to the premixing equipment reflux port 13 through the two reversing valves 46 under the action of the high-viscosity asphalt pump 47, and enters the premixing cavity 21.

As shown in fig. 5, the return pipe 38 connects the premix apparatus return port 13 of the premix apparatus 100 and the development apparatus return port 42 of the development apparatus 200, the compression hose 39 is attached to the front end of the return pipe 38, the electromagnetic contactor 40 is fixed to the compression hose 39, and the electromagnetic valve 41 is provided on the development apparatus return port 42.

As shown in FIG. 6, the blades of the paddle type stirrer 8 are arranged in an opposite manner, the installation angle α of the blades ranges from 30 degrees to 60 degrees, the screw pitch of the auger type stirrer 7 is 200mm as shown in FIG. 7, the mixing holes on the paddle type stirrer are arranged in a staggered manner, and the diameter of the mixing holes ranges from 5 mm to 20 mm.

The rubber powder modified asphalt is produced and set in the following use process:

when the device is used, the premixing device 100 starts to work, the matrix asphalt is measured by the flowmeter, enters the premixing device through the matrix asphalt inlet 20 under the action of the asphalt pump, flows through the asphalt pipeline 9 and is sprayed out from the nozzle 10; the feeding door 1 is opened, bagged rubber powder is put into the feeding cavity 4, the bagged rubber powder slides to the position of the disassembling knife 3 under the action of gravity, the rubber powder bag is divided under the rotation of the disassembling knife 3, the disassembling knife 3 is driven by a disassembling motor to rotate, rubber powder particles flow into the lower part of the feeding cavity 4, a constructor pushes the push rod 2 to push the waste rubber powder bag into the rubber powder bag collecting cavity 26, and the constructor can recycle the waste rubber powder bag from the outlet 27 of the rubber powder bag collecting cavity for centralized treatment; when the materials need to be fed, the weighing sensor 6 weighs the rubber powder weight in the rubber powder weighing cavity 25, the weighed rubber powder weight information is transmitted to the PLC in the form of an electric signal, and logic judgment is carried out inside the PLC: if the weight of the rubber powder does not reach the calibrated weight, the PLC enables the first butterfly valve 5 to be in an opening state, the second butterfly valve 23 is in a closing state, the rubber powder enters the rubber powder weighing cavity 25 through the feeding hole 28 of the weighing device, when the weight of the rubber powder in the rubber powder weighing cavity 25 reaches the calibrated weight, the PLC enables the first butterfly valve 5 to be closed, the second butterfly valve 23 is in the opening state, the rubber powder enters the premixing cavity 21 through the discharging hole 23 of the weighing device, and after the second butterfly valve 23 is opened for 5-10 seconds, the second butterfly valve is automatically closed under the control of the PLC, so that the automatic weighing and feeding of the rubber powder is completed. The inner wall of the premixing cavity 21 is distributed with an asphalt pipeline 9 and dozens of nozzles 10 for spraying matrix asphalt, compared with the traditional mode that the matrix asphalt flows into the bottom, the mixing efficiency is high, and the caking phenomenon of rubber powder can be avoided to a certain extent under the spraying effect; stirring the matrix asphalt and the rubber powder in the premixing cavity 21 for 10-15 min through the paddle type stirrer 8 and the auger type stirrer 7, wherein the paddle type stirrer 8 mainly generates axial flow and radial flow, the auger type stirrer 7 can generate a vortex-shaped flow field, and meanwhile, the positions of the two stirrers in the premixing cavity 21 are not symmetrical along the axis, so that a complex flow direction can be generated in the premixing cavity 21, and the mixing efficiency is improved; the paddle type stirrer 8 and the auger type stirrer 7 are distributed with first mixing holes 22, wherein the first mixing holes 22 are arranged on the blades of the paddle type stirrer 8 in a staggered manner, so that the power consumption of the motor 17 of the premixing equipment is reduced, and the mixing effect is improved; the baffle 12 can change the tangential flow in the premixing cavity 21 into axial flow, so that the stirring effect is enhanced; the bottom of the premixing cavity 21 is tapered, so that premixed rubber asphalt can flow out conveniently; the bottom of the premixing cavity 21 is provided with the filter plate 14, which can ensure that agglomerated rubber powder can not flow out and ensure the uniformity of discharging.

The rubber asphalt after the premixing is finished flows into a discharge pipeline 49 through an outflow port 15 of the premixing equipment, flows through two reversing valves 46 under the action of a high-viscosity asphalt pump 47, enters the development equipment 200, and is developed and stirred for 40-50 min; the inner barrel 32 is supported by the ball bearing 36 and the balls 35, and is driven by the development equipment motor 31 to rotate around the axis integrally, so that all rubber asphalt materials are turned over, and the effect of preventing rubber powder from sinking is better; the swollen and developed rubber asphalt flows out through an outflow port 34 of the development equipment; if the developed rubber asphalt is unqualified, the rubber asphalt can flow back through the return port 42 of the development equipment, flows through the two reversing valves 46 to the return port 13 of the premixing equipment under the action of the high-viscosity asphalt pump 47, flows back into the premixing equipment, and is added with a proper amount of rubber powder again for stirring production, so that the quality of the rubber asphalt is ensured to be qualified.

As shown in fig. 5, the specific implementation of the rubber asphalt back flow to the development equipment 100 is as follows: firstly, gradually stopping the operation of the development equipment motor 31 to drive the development equipment return port 42 to stay near the front end of the return pipeline 38, then electrifying the electromagnetic contact 40, lengthening the compression hose 39, adsorbing the compression hose to the development equipment return port 42, opening the electromagnetic valve 41 to enable the rubber asphalt to flow back to the premixing equipment from the development equipment, closing the electromagnetic valve 41 when the return is finished, powering off the electromagnetic contact 40, and automatically retracting the compression hose 39 under the action of elasticity; the developmentally finished rubberized asphalt passes through the developmentally apparatus outflow port 34, in the same manner as the outflow; according to the requirement of the yield, one development device or two development devices can be selected to work simultaneously, the inflow/the outflow of the development devices/the premixing devices is adjusted through the reversing valve, the number of pipelines and the number of asphalt pumps are reduced, the occupied space is saved, and the cost is reduced.

The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims (10)

1. The novel rubber powder modified asphalt production equipment is characterized by comprising premixing equipment (100) and development equipment (200), wherein an outflow port (15) of the premixing equipment (100) is connected with a feeding port (43) of the development equipment (200) through a discharge pipeline (49);

the premixing device (100) comprises a premixing cavity (21), wherein an asphalt pipeline (9) and a baffle (12) are installed on the inner wall of the premixing cavity (21), the baffle (12) is longitudinally arranged, a nozzle (10) is arranged on the asphalt pipeline (9), and an auger type stirrer (7) and a blade type stirrer (8) are installed in the premixing cavity (21);

the development equipment (200) comprises an outer barrel (29), an inner barrel (32) is arranged in the outer barrel (29), the inner barrel (32) is mounted on a power output shaft of a development equipment motor (31), a ball bearing (36) is fixed on the inner wall of the outer barrel (29), balls (35) are arranged on the ball bearing (36), the balls (35) support the inner barrel (32) to rotate around the axis of the inner barrel, and a plurality of stirring blades (33) are welded on the inner wall of the inner barrel (32) along the circumferential direction.

2. The novel rubber powder modified asphalt production equipment as claimed in claim 1, wherein a rubber powder weighing cavity (25) is arranged on the upper portion of the premixing cavity (21), a weighing device feeding port (28) is formed in the top wall of the rubber powder weighing cavity (25), a weighing device discharging port (24) is formed in the lower wall of the rubber powder weighing cavity, a second butterfly valve (23) is arranged at the weighing device discharging port (24), a weighing sensor (6) is installed on the side portion of the rubber powder weighing cavity (25), the rubber powder weighing cavity (25) is in flexible connection with the weighing device feeding port (28) and the weighing device discharging port (24), and the rubber powder weighing cavity (25) is communicated with the premixing cavity (21) through the weighing device discharging port (24).

3. The equipment for producing the novel rubber powder modified asphalt as claimed in claim 2, wherein a feeding cavity (4) is arranged at the upper part of the rubber powder weighing cavity (25), a plurality of disassembling knives (3) are horizontally arranged in the feeding cavity (4), and a first butterfly valve (5) is arranged at the feeding port (28) of the weighing device.

4. The equipment for producing the novel rubber powder modified asphalt as claimed in claim 3, wherein the side wall of the feeding cavity (4) is provided with an opening for passing through the push rod (2), the side wall opposite to the opening is provided with a rubber powder bag collecting cavity (26), and the bottom of the rubber powder bag collecting cavity (26) is provided with a rubber powder bag collecting cavity outlet (27).

5. The equipment for producing the novel rubber powder modified asphalt as claimed in claim 1, wherein the auger type stirrer (7) and the blade type stirrer (8) are uniformly provided with a first mixing hole (22); the stirring blades (33) are divided into three types: the three stirring blades are arranged in a staggered mode, wherein the mixing holes are not formed, the second mixing holes (44) are distributed in the mixing holes, the third mixing holes (45) are distributed in the mixing holes, the mixing blades are arranged in the mixing holes in a staggered mode, the second mixing holes (44) are round holes, and the third mixing holes (45) are strip-shaped holes.

6. The new rubber powder modified asphalt production equipment as claimed in claim 1, wherein the outlet (15) of the premixing device is arranged at the bottom of the premixing chamber (21), and the outlet (15) of the premixing device is provided with a filter plate (14).

7. The equipment for producing the novel rubber powder modified asphalt as claimed in claim 1, wherein the lower part of the premixing equipment (100) is provided with a premixing equipment return port (13) communicated with the premixing cavity (21), the bottom of the inner barrel (32) is provided with a development equipment outflow port (34), and the premixing equipment return port (13) is connected with the development equipment return port (42) through a return pipeline (38).

8. The novel rubber powder modified asphalt production equipment as claimed in claim 7, wherein a compression hose (39) is installed at the front end of the return pipe (38), an electromagnetic contact (40) is fixed on the compression hose (39), and an electromagnetic valve (41) is arranged on the return port (42) of the development equipment.

9. The equipment for producing the novel rubber powder modified asphalt as claimed in claim 1, wherein the bottom of the development equipment (200) is provided with a shock absorption device (37).

10. The equipment for producing the novel rubber powder modified asphalt as claimed in claim 1, wherein a first heat conducting oil pipe (11) is installed in the inner wall of the premixing cavity (21), and a second heat conducting oil pipe (30) is installed between the inner barrel (32) and the outer barrel (29) of the development equipment (200).

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