CN210288032U

CN210288032U - Sand-fog-containing road maintenance sealer

Info

Publication number: CN210288032U
Application number: CN201920498949.7U
Authority: CN
Inventors: 章祖根; 赵震洲
Original assignee: Zhejiang Xinrui Construction Machinery Co Ltd
Current assignee: Zhejiang Xinrui Construction Machinery Co Ltd
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2020-04-10
Anticipated expiration: 2029-04-12

Abstract

The utility model discloses a road maintenance sand-containing fog sealing machine, which comprises an asphalt pipe for conveying asphalt at the upper part, a sand injection pipe for conveying sand, a booster pump at the lower part, a spray pipe connected with the lower part of the booster pump, and a mixer; the mixer is a sealed cylindrical container, the cylinder is vertically arranged, a spiral clapboard which is spirally downward along the axial direction is arranged in the cylinder, the interior of the mixer is divided into spiral material channels, the upstream end of each material channel is opened above the cylindrical side wall and is connected with an asphalt pipe, and the downstream end of each material channel is opened at the bottom in the mixer; the sand injection pipe vertically penetrates into the mixer along the axis of the mixer and is opened at the bottom in the mixer; the bottom opening of the side wall of the mixer is connected with a booster pump. The utility model has the advantages that: the asphalt and sand mixing agent has the advantages of uniform mixing of asphalt and sand, difficult sedimentation and blockage and convenient construction.

Description

Sand-fog-containing road maintenance sealer

Technical Field

The utility model relates to a road construction maintenance equipment field specifically is a road maintenance contains sand fog sealing machine.

Background

After the highway is newly built, micro cracks can appear on a pavement layer along with use, and rain, snow and water can infiltrate. The penetrating water will gradually erode the underlying pavement material. This erosion damage is particularly severe in the winter season due to the volume expansion of water after it has frozen into ice. In order to protect the road, preventive maintenance is required when cracks appear, and the road is filled by surface micro-treatment, namely covering a thin asphalt layer on the road surface to infiltrate into the fine cracks. The method can refer to a method for rapidly repairing cracks of the asphalt pavement disclosed in Chinese patent document CN103758009A in 2014, 4, 30, and is characterized in that V-shaped grooves with certain specifications are formed along the cracks of the asphalt pavement, modified emulsified asphalt is coated on the groove walls, and the fine-grained embedded and extruded asphalt mixture is backfilled and compacted. Compared with the prior art, the repair method has the characteristics of simple operation, small influence on the pavement structures on two sides of the crack, high repair speed, no influence on traffic, economy, practicability and the like, has good popularization and application values, and can be widely applied to repair of asphalt pavements. However, the pure asphalt cover is too slippery, and fine sand needs to be added into the asphalt to improve the friction force of the asphalt and prevent the wheel from skidding. The existing construction method is to spray a layer of asphalt on the construction surface and simultaneously spray a layer of sand on the construction surface. However, the sand is not firmly bonded to the asphalt, and the sand is easily separated from the asphalt when the vehicle drives more. In the imported equipment of the united states, sand is added directly to the bitumen storage tank. Since the specific gravity of the sand is 2 times that of the asphalt, the stirring paddle is started to stir continuously in order to avoid the sand from depositing downwards in the asphalt. In addition, in order to reduce the precipitation speed, pottery clay is also infiltrated into the asphalt. The clay is infiltrated into the asphalt to affect the adhesive force and reduce the firmness of the finish coat. Due to the stringent requirements placed on the amount of asphalt sprayed when spraying a cover on a roadway, the pumps used must be positive displacement. Conventional gear pumps cannot be used because the media is sandy, so the us equipment uses a plunger pump. Because the plunger pump reciprocates, the spraying is intermittent and uneven, and a pressure stabilizing box is arranged between the pump and the spray pipe. The sand is easy to deposit and block in the pressure stabilizing box and the conveying pipeline, and needs to be dredged frequently, which brings great trouble to the construction.

Disclosure of Invention

Based on above problem, the utility model provides a road maintenance contains sand fog seal machine has pitch and sand misce bene, is difficult for deposiing the jam, the advantage of convenient construction.

In order to realize the purpose of the invention, the utility model adopts the following technical scheme: a road maintenance sand-containing fog sealing machine comprises an asphalt pipe for conveying asphalt at the upstream, a sand injection pipe for conveying sand, a booster pump at the downstream, a spraying pipe connected with the downstream of the booster pump, and a mixer; the mixer is a sealed cylindrical container, the cylinder is vertically arranged, a spiral clapboard which is spirally downward along the axial direction is arranged in the cylinder, the interior of the mixer is divided into spiral material channels, the upstream end of each material channel is opened above the cylindrical side wall and is connected with an asphalt pipe, and the downstream end of each material channel is opened at the bottom in the mixer; the sand injection pipe vertically penetrates into the mixer along the axis of the mixer and is opened at the bottom in the mixer; the bottom opening of the side wall of the mixer is connected with a booster pump.

The road maintenance sand-containing fog sealing machine of this scheme design includes pitch pipe, notes sand pipe, blender, booster pump and spray line. The asphalt pipe is used for injecting asphalt into the mixer, the sand injection pipe is used for injecting sand into the mixer, the mixer is used for mixing the asphalt and the sand, and the sand-containing asphalt after being mixed is pressurized by the booster pump and then is sprayed out of the spraying pipe for construction. The mixer used in the scheme is a closed cylindrical container, a stirrer stirring paddle and the like driven by power are not arranged in the mixer, but a spiral partition plate is designed, the spiral partition plate spirally extends downwards around the axis of the cylinder, a spiral material channel is formed in the mixer in a separated mode, and asphalt is specially supplied to pass through the mixer from top to bottom in a spiral mode. The upper part of the side wall of the mixer is provided with an opening of the material channel for connecting with the asphalt pipe. The lower end opening of the material channel is positioned below the interior of the mixer, and a certain gap is arranged at the bottom of the mixer. The sand injection pipe vertically extends into the mixer along the axis of the mixer, and the opening is arranged below the inner part of the mixer. The bottom of the side wall of the mixer is provided with an opening for communicating the asphalt mixed with the sand to the booster pump. In this mixer, pitch constantly rotates from top to bottom, forms the swirl in inside below the mixer, and sand is constantly appeared in the middle part of pitch swirl, and along with the rotation of pitch swirl outwards mix the diffusion, and pitch is rotatory more violent, and angular velocity just is big more, and is also strong with the mixing action of sand, and the effect is also more even. Because this scheme has formed the natural swirl of mixture of pitch and sand from structural design, consequently as long as continuously spray the construction, just can not form the sediment, can not cause the jam, so need not use agitated vessel, make whole work progress smooth, efficiency is very high.

Preferably, the asphalt pipe is provided with an asphalt pipe booster pump. The faster the angular speed that pitch passes through spiral material way, the better the stirring effect, the more difficult sediment that forms sand, consequently can dispose pitch pipe booster pump on pitch pipe to the velocity of flow of pitch is accelerated, the angular speed of improvement swirl.

Preferably, the bottom of the mixer is provided with a dispersion inclined plane; the dispersion inclined plane is a convex spherical surface, and the sphere center of the spherical surface is positioned on a downward extension line of the mixer axial line. This design has designed a bellied sphere that makes progress in the blender bottom, and notes sand pipe lower extreme opening is just to the sphere top, by the sand that the top falls down, along the sphere under the action of gravity to the continuous landing dispersion of side, stirs with peripheral rotatory pitch simultaneously and mixes, the caking phenomenon of the sand that disappears that can be better makes the stirring more abundant, mixes more evenly.

Preferably, the lower end of the sand injection pipe is provided with a dispersion opening, the dispersion opening is in a horn shape of an upwards convex spherical surface, and the sphere center of the spherical surface is superposed with the sphere center of the spherical surface of the dispersion inclined surface of the mixer. This design has optimized the lower extreme opening of notes sand pipe, makes it also form the bellmouth of sphere, and when the dispersion inclined plane of cooperation blender bottom was used, the clearance regularity between bellmouth and the dispersion inclined plane was followed to the sand spills over, makes the mixed effect further promote.

Preferably, the spiral separator forms a spiral having at least 2 turns. The spiral number of turns that the spiral baffle formed is the spiral number of turns that the material that pitch passed through was said, and the spiral number of turns is more, and pitch is stronger through the swirl effect that the back formed, and is better to the effect of mixing.

Preferably, the hole diameter of the bottom opening of the side wall of the mixer is larger than or equal to the pipe diameter of the asphalt pipe. The design can avoid the material to block up in the blender, and the ejection of compact is more swift.

To sum up, the beneficial effects of the utility model are that: the asphalt and sand mixing agent has the advantages of uniform mixing of asphalt and sand, difficult sedimentation and blockage and convenient construction.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is an axial cross-sectional schematic view of the mixer.

Fig. 3 is a front view of the mixer.

Fig. 4 is a top view of the mixer.

Wherein: 1 pitch pipe, 2 notes sand pipe, 3 blenders, 4 booster pumps, 5 spray lines, 6 pitch pipe booster pumps, 21 dispersion openings, 31 spiral baffle, 32 dispersion inclined planes.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

The embodiment is a road maintenance sand-containing fog sealing machine.

As shown in figure 1, the road maintenance sand-containing fog sealing machine comprises an asphalt pipe 1 and a sand injection pipe 2, wherein the asphalt pipe conveys asphalt from left to right, the sand injection pipe conveys sand from top to bottom according to gravity, and the lower reaches of the asphalt pipe and the sand injection pipe are introduced into a mixer to mix the asphalt with the sand. The downstream of the mixer is connected with a spraying pipe 5 through a pipeline for spraying operation, and the pipeline is correspondingly provided with a booster pump 4. Wherein the asphalt pipe is also provided with an asphalt pipe booster pump 6.

As shown in fig. 2, 3 and 4, the mixer used in this example is a sealed cylinder. The sand injection pipe passes through the top of the cylinder from above and then extends downwards along the axis of the cylinder and finally opens at the near bottom position of the mixer. The mixer is internally designed with a spiral clapboard 31 in a cylinder shape, the spiral clapboard rotates along the axis of the cylinder from top to bottom and surrounds the pipe wall of the sand injection pipe at the center and the side wall of the mixer at the outer side to form a spiral material channel. The upper end of the spiral material channel is opened above the cylindrical side wall, the opening direction is the tangential direction of the cylinder, and the opening is connected with the downstream end of the asphalt pipe. The lower end of the spiral material channel is also opened at the position near the bottom of the mixer. The spiral separator forms a spiral with at least 2 turns, in this case 2.25 turns. The bottom of the mixer is provided with a dispersion slope 32, which in this example is a convex spherical surface, and the center of the sphere of the spherical surface is located on the downward extension line of the mixer axis. Correspondingly, the lower end of the sand injection pipe is provided with a dispersion opening 21, the dispersion opening is in a horn shape of an upward convex spherical surface, and the spherical center of the spherical surface is superposed with the spherical center of the spherical surface of the dispersion inclined plane of the mixer. The outlet end of the mixer is provided with a hole at the bottom of the side wall of the mixer, the hole is also in the tangential direction of a cylinder, the aperture of the hole is larger than the pipe diameter of the asphalt pipe, and the hole is communicated to the spraying pipe. The gap between the dispersion slope and the dispersion opening is larger than the aperture of the opening.

When the asphalt spraying device is used, asphalt is pumped into the mixer after being pressurized by the asphalt booster pump, a vortex is formed at the bottom of the mixer by inertia after passing through the spiral material channel, sand slides down from top to bottom according to gravity and dispersedly slides down to the periphery through a gap between the dispersion inclined plane and the dispersion opening, and is mixed and stirred with a vortex-shaped asphalt flow in the process, finally leaves the mixer from the outlet end, and is sprayed by the spraying pipe after being pressurized by the booster pump.

In practical application, the number of turns of spiral baffle is variable, and the number of turns is more, and the swirl effect that forms pitch is stronger, but the number of turns too much also can lead to swirl passageway overlength, can lead to flow velocity to descend after the frictional force grow of pitch and lateral wall, is formed with the reaction to the swirl. Parameters such as viscosity of bitumen, height of the mixer, and particle size of the sand all have a certain effect on the final result. The specific parameters may be determined by a designer skilled in the art according to design requirements.

Claims

1. A road maintenance sand-containing fog sealing machine comprises an asphalt pipe (1) for conveying asphalt at the upstream, a sand injection pipe (2) for conveying sand, a booster pump (4) at the downstream, and a spraying pipe (5) connected with the downstream of the booster pump, and is characterized by also comprising a mixer (3); the mixer is a sealed cylindrical container, the cylinder is vertically arranged, a spiral clapboard (31) which is spirally downward along the axial direction is arranged in the cylinder, the interior of the mixer is divided into spiral material channels, the upstream end of each material channel is opened above the side wall of the cylinder and is connected with an asphalt pipe, and the downstream end of each material channel is opened at the bottom in the mixer; the sand injection pipe vertically penetrates into the mixer along the axis of the mixer and is opened at the bottom in the mixer; the bottom opening of the side wall of the mixer is connected with a booster pump.

2. The road maintenance sand-containing fog sealing machine as claimed in claim 1, wherein the asphalt pipe is provided with an asphalt pipe booster pump (6).

3. A road maintenance sand-containing fog sealer as claimed in claim 1 or 2, wherein the mixer is provided with a dispersion slope (32) at the bottom; the dispersion inclined plane is a convex spherical surface, and the sphere center of the spherical surface is positioned on a downward extension line of the mixer axial line.

4. A road maintenance sand-containing fog sealer as claimed in claim 3, wherein the lower end of the sand injection pipe is provided with a dispersion opening (21) which is in the shape of a trumpet with a convex spherical surface, and the spherical center of the dispersion opening is coincident with the spherical center of the spherical surface of the dispersion slope of the mixer.

5. A road maintenance sand-containing fog sealer as claimed in claim 1 or 2, wherein the number of turns of the spiral formed by the spiral partition is at least 2.

6. The road maintenance sand-containing fog sealing machine as claimed in claim 1 or 2, wherein the aperture of the bottom opening of the side wall of the mixer is larger than or equal to the pipe diameter of the asphalt pipe.