CN215051799U - Warm mix asphalt foaming device - Google Patents

Abstract

The application discloses warm mix pitch foaming device, it includes a foaming section of thick bamboo, a foaming section of thick bamboo upside is provided with the motor, the output shaft fixedly connected with (mixing) shaft of motor, the (mixing) shaft passes inside a foaming section of thick bamboo, (mixing) shaft fixedly connected with stirring piece and flight, the stirring piece is located the flight top, be provided with pitch import pipe and pitch outlet pipe on the foaming section of thick bamboo wall, pitch import pipe lateral wall fixedly connected with water installations. When warm asphalt and cold water enter from the asphalt inlet pipe at the same time, the cold water meets the hot asphalt and is heated and vaporized, the asphalt expands, the expanded asphalt is acted by the stirring sheet and the spiral sheet, and finally flows out from the asphalt outlet pipe, and the asphalt after being stirred and foamed by the foaming cylinder has the effects of being more uniform, lower in viscosity and stronger in wrapping capacity.

Description

Warm mix asphalt foaming device

Technical Field

The application relates to the field of asphalt processing equipment, in particular to a warm mix asphalt foaming device.

Background

The asphalt is a black-brown complex mixture composed of hydrocarbons with different molecular weights and non-metallic derivatives thereof, and is a waterproof, moistureproof and anticorrosive organic cementing material. Asphalt is commonly used to make asphalt concrete, which is a mixture of aggregates such as crushed stone and crushed gravel mixed with a certain proportion of road asphalt under strictly controlled conditions.

In the related art, chinese patent No. CN205874904U discloses a novel asphalt foaming device, which structurally comprises a metal partition plate, a heat conduction oil pipe, an oil outlet port, a heat conduction oil cavity, an oil inlet port, a stirrer, a raw material storage tank, a delivery pump, a cover plate, a water tank, a delivery pipe, a pressure pump, a high pressure water pipe, an air compressor, an air flow meter, a gas delivery pipe, an asphalt outlet, a reaction cavity, a nozzle, and a programmable controller; the agitator is connected with raw materials storage jar, and the delivery pump is connected with raw materials storage jar through the conveying pipeline, and metal baffle is connected with the apron, and metal baffle is connected with heat conduction oil pipe, and the pitch export is fixed in the metal baffle lower extreme, and the nozzle is connected with high-pressure water pipe, and the force (forcing) pump is connected with the water tank through high-pressure water pipe, and air flow meter is connected with air compressor through the gas-supply pipe, and the gas-supply pipe is connected with the apron.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: above-mentioned novel pitch foaming device only relies on the continuous pressurization of liquid and air when foaming the operation to make pitch and water mix and foaming operation, there is the insufficient defect of pitch foaming, remains to improve.

SUMMERY OF THE UTILITY MODEL

In order to improve the insufficient problem of pitch foaming, the application provides a warm mix pitch foaming device.

The application provides a warm mix asphalt foaming device adopts following technical scheme:

the utility model provides a warm mix asphalt foaming device, includes the foaming section of thick bamboo, foaming section of thick bamboo upside is provided with the motor, the output shaft fixedly connected with (mixing) shaft of motor, the (mixing) shaft passes inside the foaming section of thick bamboo, fixedly connected with stirring piece and flight on the (mixing) shaft, the stirring piece is located the flight top, be provided with pitch import pipe and pitch outlet pipe on the foaming section of thick bamboo wall, pitch import pipe lateral wall fixedly connected with water installations.

By adopting the technical scheme, the molten hot asphalt flows into the reaction cylinder along the asphalt inlet pipe, meanwhile, the water inlet device sends cold water into the asphalt inlet pipe, the cold water is heated rapidly after being heated by the asphalt to be vaporized to form water vapor, and the water vapor and the hot asphalt enter the foaming cylinder; the motor works to drive the stirring shaft to rotate, the stirring sheet uniformly mixes the hot asphalt and the water vapor, and the asphalt expands to realize foaming. The spiral sheet plays a role in stirring on one hand, and plays a role in up-and-down reciprocating asphalt on the other hand, so that the asphalt is delayed from flowing out of the foaming cylinder. The asphalt can be fully foamed, the viscosity of the prepared asphalt is lower, and the capability of wrapping the broken stone is stronger.

Optionally, the outer edge upside fixedly connected with sand grip of flight, the interval is provided with a plurality of breachs on the sand grip.

Through adopting above-mentioned technical scheme, the sand grip can help the flight to drive the reciprocal to the upper end of well lower extreme from the foaming section of thick bamboo, stirs by the better stirring of stirring piece, makes the stirring more even. The notch design on the sand grip can make the better outflow of pitch of sand grip bottom for pitch is difficult for remaining on the spiral piece.

Optionally, the bitumen inlet pipe is located above the bitumen outlet pipe.

By adopting the technical scheme, the asphalt inlet pipe is positioned above the asphalt outlet pipe, so that asphalt can completely enter the interior of the foaming cylinder and cannot flow out; the asphalt outlet pipe is positioned below the asphalt inlet pipe, so that the asphalt which is completely foamed can smoothly flow out.

Optionally, the stirring plate is opposite to the outlet of the asphalt inlet pipe, and the lower end of the spiral plate is opposite to the outlet of the asphalt outlet pipe.

Through adopting above-mentioned technical scheme, when a large amount of foaming pitch import pipe entered into from pitch, just faced the stirring piece, can stir by the stirring piece earlier, the foaming is more abundant, and the pitch outlet pipe then just makes pitch take the place of a situation outflow.

Optionally, the stirring sheet is provided with a through hole for the foamed asphalt to pass through.

Through adopting above-mentioned technical scheme, the through-hole on passing the stirring piece after foaming pitch gets into the foaming section of thick bamboo, and pitch receives the effect of through-hole shear force, and the volume becomes littleer, more does benefit to the foaming to realize better foaming and stirring function.

Optionally, water installations includes the inlet tube, inlet tube one end is connected with pitch import pipe lateral wall, the junction of inlet tube and pitch import pipe is the feed through state, the inlet tube other end is connected with the water pump, fixedly connected with two-way diverter valve and back flow on the inlet tube, two-way diverter valve main entrance and advance water piping connection, two-way diverter valve subchannel is connected with the back flow.

By adopting the technical scheme, when the asphalt stops feeding into the foaming cylinder, the bidirectional switching valve is operated, the return pipe is communicated with the water inlet pipe, and water flows back to the reservoir along the return pipe, so that intermittent water feeding is realized.

Optionally, a flow valve is fixedly connected to the water inlet pipe, and the bidirectional switching valve is located between the flow valve and the water pump.

By adopting the technical scheme, the flow valve controls the size of the inlet water, so that water and asphalt in a proper proportion can be fused and foamed.

Optionally, the shell of the foaming cylinder is of a double-layer structure, and the shell of the foaming cylinder is hollow to form a heat-conducting oil cavity.

By adopting the technical scheme, the interior of the foaming cylinder can be kept in a warm state, and the asphalt is prevented from being cooled and solidified.

In summary, the present application includes at least one of the following benefits:

1. through the arrangement of structures such as a water inlet device and a stirring sheet, fully foamed asphalt can be obtained, the viscosity of the fully foamed asphalt is far lower than that of matrix asphalt, and the wrapping capacity of aggregate is improved;

2. by adopting the foam asphalt warm-mixing technology, the aggregate can be stirred and constructed under the condition that the heating temperature of the aggregate is 20-30 ℃ lower than that of the aggregate in the conventional hot-mixing technology, and the foam asphalt warm-mixing technology is more environment-friendly and energy-saving than the hot-mixing technology;

3. the equipment is a structural device for mixing cold water and warm asphalt and then foaming, can solve the problems of rapid fusion of the cold water and the warm asphalt, uneven foam distribution, blockage after asphalt cooling and the like.

Drawings

FIG. 1 is a partially schematic cross-sectional view of a highlighted thermally conductive oil cavity in an embodiment of the present application.

Description of reference numerals:

1. an electric motor; 2. a stirring shaft; 3. a foam cylinder; 4. a stirring sheet; 5. a spiral sheet; 6. an asphalt inlet pipe; 7. an asphalt outlet pipe; 8. a water inlet device; 81. a water inlet pipe; 82. a water pump; 83. a two-way switching valve; 84. a flow valve; 85. a return pipe; 9. a support; 10. a coupling; 11. a convex strip; 12. a notch; 13. the heat conducting oil cavity.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses warm mix asphalt foaming device. Referring to fig. 1, the warm mix asphalt foaming device comprises a motor 1, a stirring shaft 2 fixedly connected with an output shaft of the motor 1, a bracket 9 fixedly connected with the lower end of the motor 1, a foaming cylinder 3 fixedly connected with the lower end of the bracket 9, a stirring sheet 4 and a spiral sheet 5 fixedly connected with the stirring shaft 2, an asphalt inlet pipe 6 and an asphalt outlet pipe 7 fixedly connected with the foaming cylinder 3, and a water inlet device 8 connected with the side wall of the asphalt inlet pipe 6, wherein the inner cavities of the asphalt inlet pipe 6 and the asphalt outlet pipe 7 are communicated with the inner cavity of the foaming cylinder 3.

Referring to fig. 1, a bracket 9 is connected between the motor 1 and the foam cylinder 3, and functions to support the motor 1. The motor 1 is connected with the stirring shaft 2 through a coupler 10, and the rod part of the stirring shaft 2 extends into the foaming cylinder 3. Stirring sheet 4 and helical blade 5 are both located inside foaming cylinder 3, and stirring sheet 4 is located helical blade 5 top. The asphalt inlet pipe 6 is positioned above the asphalt outlet pipe 7, the stirring sheet 4 is opposite to the outlet of the asphalt inlet pipe 6, and the lower end of the spiral sheet 5 is opposite to the outlet of the asphalt outlet pipe 7.

Referring to fig. 1, the stirring sheet 4 is provided with through holes for asphalt to pass through, and the through holes are vertically arranged. 5 marginal upside fixedly connected with sand grip 11 of flight, seted up breach 12 on the sand grip 11, passed from the through-hole when the foaming pitch, the effect of pitch atress is cuted by the through-hole, and 3 bottom pitches of foaming section of thick bamboo are driven to 11 help flights of flight on the flight 5, return to 4 departments of stirring piece from down and are stirred, remain to the pitch of 11 bottoms of sand grip from breach 12 outflow. The shell of the foaming cylinder 3 is of a double-layer structure, the shell is hollow, a heat conducting oil cavity 13 is arranged between the shells, and the heat conducting oil cavity 13 continuously supplies heat to the foaming cylinder 3 to prevent asphalt from being solidified when the asphalt meets condensation.

Referring to fig. 1, the water inlet device 8 includes a water inlet pipe 81, a water pump 82, a two-way switching valve 83 fixedly connected to the water inlet pipe 81, and a flow valve 84. One end of the water inlet pipe 81 is fixedly connected with the side wall of the asphalt inlet pipe 6, the inner cavity of the water inlet pipe 81 is communicated with the inner cavity of the asphalt inlet pipe 6, and the other end of the water inlet pipe 81 is fixedly connected with the water pump 82. The two-way switching valve 83 is located between the water pump 82 and the flow valve 84, the two-way switching valve 83 is of a three-way ball valve structure, a main channel of the two-way switching valve is connected with the water inlet pipe 81, and a branch channel of the two-way switching valve is connected with the return pipe 85. The two-way switching valve 83 is operated to communicate with the main channel of the two-way switching valve 83, the flow valve 84 is opened, the water inlet pipe 81 can deliver water to the asphalt inlet pipe 6, the two-way switching valve 83 is operated to communicate with the branch channel, and the water flows to the return pipe 85, so that intermittent water inlet is realized.

The implementation principle of a warm mix asphalt foaming device of the embodiment of the application is as follows: molten hot asphalt flows into the foaming cylinder 3 along the asphalt inlet pipe 6, meanwhile, cold water is fed into the asphalt inlet pipe 6 by the water inlet device 8, the cold water is heated rapidly after being heated to be vaporized to form water vapor, and the water vapor enters the foaming cylinder 3 along with the hot asphalt; the motor 1 works to drive the stirring shaft 2 to rotate, the stirring sheet 4 uniformly mixes hot asphalt and water vapor, and the asphalt expands to realize foaming. The spiral piece 5 and the convex strips 11 on the spiral piece 5 play the role of pitch reciprocating up and down. The asphalt can be fully foamed, the viscosity of the prepared asphalt is lower, and the capability of wrapping the broken stone is stronger.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a warm mix asphalt foaming device, includes foaming section of thick bamboo (3), its characterized in that: the foaming cylinder is characterized in that a motor (1) is arranged on the upper side of the foaming cylinder (3), an output shaft of the motor (1) is fixedly connected with a stirring shaft (2), the stirring shaft (2) penetrates through the interior of the foaming cylinder (3), a stirring sheet (4) and a spiral sheet (5) are fixedly connected onto the stirring shaft (2), the stirring sheet (4) is located above the spiral sheet (5), an asphalt inlet pipe (6) and an asphalt outlet pipe (7) are arranged on the wall of the foaming cylinder (3), and a water inlet device (8) is fixedly connected to the side wall of the asphalt inlet pipe (6).

2. The warm mix asphalt foaming device according to claim 1, wherein: the outer edge of the spiral piece (5) is fixedly connected with a convex strip (11), and a plurality of gaps (12) are arranged on the convex strip (11) at intervals.

3. The warm mix asphalt foaming device according to claim 1, wherein: the asphalt inlet pipe (6) is positioned above the asphalt outlet pipe (7).

4. The warm mix asphalt foaming device according to claim 3, wherein: the stirring sheet (4) is opposite to the outlet of the asphalt inlet pipe (6), and the lower end of the spiral sheet (5) is opposite to the outlet of the asphalt outlet pipe (7).

5. The warm mix asphalt foaming device according to claim 1, wherein: and the stirring sheet (4) is provided with a through hole for the foamed asphalt to pass through.

6. The warm mix asphalt foaming device according to claim 1, wherein: water installations (8) are including inlet tube (81), inlet tube (81) one end is connected with pitch import pipe (6) lateral wall, the junction that inlet tube (81) were imported pipe (6) with pitch is the intercommunication state, inlet tube (81) other end is connected with water pump (82), fixedly connected with two-way diverter valve (83) and back flow (85) on inlet tube (81), two-way diverter valve (83) main entrance is connected with inlet tube (81), two-way diverter valve (83) subchannel is connected with back flow (85).

7. The warm mix asphalt foaming device according to claim 6, wherein: fixedly connected with flow valve (84) on inlet tube (81), two-way switch valve (83) are located between flow valve (84) and water pump (82).

8. The warm mix asphalt foaming device according to claim 1, wherein: the shell of the foaming tube (3) is of a double-layer structure, and a heat-conducting oil cavity (13) is formed in the hollow shell of the foaming tube (3).

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