阅读说明：本技术 一种失压式搅拌釜及利用其制作泡沫沥青的方法 (Decompression type stirring kettle and method for manufacturing foamed asphalt by using same ) 是由 薛山 于新 陆斌 于 2020-07-01 设计创作，主要内容包括：本发明公开了一种失压式搅拌釜,属于沥青生产技术领域,包括搅拌釜、称重台和喷沫主管道,所述搅拌釜包括釜体、电机、搅拌轴、搅拌叶片和称重支座,所述电机设置在釜体的顶部,所述搅拌轴设置在釜体内部,且所述搅拌轴与所述电机的主轴相连接,所述搅拌叶片设置在搅拌轴的底部,所述釜体的顶部还设有沥青进口管、水进口管、压缩气体进口管和添加剂进口管,且所述沥青进口管、水进口管、压缩气体进口管和添加剂进口管上都设有闸阀,所述釜体的底部还设有泡沫沥青出口阀,解决泡沫沥青的发泡方法存在泡发操作复杂,导致发泡效率过低的问题,液液混合更均匀,延长泡沫沥青的半衰期,增加泡沫沥青的稳定性。(The invention discloses a decompression type stirring kettle, which belongs to the technical field of asphalt production and comprises a stirring kettle, a weighing platform and a main foam spraying pipeline, wherein the stirring kettle comprises a kettle body, a motor, a stirring shaft, stirring blades and a weighing support, the motor is arranged at the top of the kettle body, the stirring shaft is arranged in the kettle body and is connected with a main shaft of the motor, the stirring blades are arranged at the bottom of the stirring shaft, an asphalt inlet pipe, a water inlet pipe, a compressed gas inlet pipe and an additive inlet pipe are further arranged at the top of the kettle body, gate valves are arranged on the asphalt inlet pipe, the water inlet pipe, the compressed gas inlet pipe and the additive inlet pipe, a foamed asphalt outlet valve is further arranged at the bottom of the kettle body, the problems that foaming operation is complicated and foaming efficiency is too low in a foaming method of foamed asphalt is solved, liquid-liquid mixing is more uniform, the half-life period of the foamed asphalt is prolonged, and the stability of the foamed asphalt is increased.)

1. The utility model provides a decompression formula stirred tank, characterized in that, includes stirred tank (1), weighing platform (2) and spouts foam trunk line (3), stirred tank (1) is including the cauldron body (101), motor (102), (mixing) shaft (103), stirring vane (104) and weighing support (105), support (201) equipment of weighing is in the outside of the cauldron body (101), motor (102) set up the top at the cauldron body (101), stirring shaft (103) set up inside the cauldron body (101), just stirring shaft (103) with the main shaft of motor (102) is connected, stirring vane (104) set up the bottom at stirring shaft (103), the top of the cauldron body (101) still is equipped with pitch import pipe (106), water import pipe (107), compressed gas import pipe (108) and additive import pipe (109), pitch import pipe (106), water import pipe (107), A gate valve (110) is arranged on the compressed gas inlet pipe (108) and the additive inlet pipe (109), and a foamed asphalt outlet valve is arranged at the bottom of the kettle body (101).

2. A pressure-loss agitator tank as defined in claim 1, wherein: the weighing platform (2) comprises a weighing support (201) and weighing scales (202), the weighing scales (202) are respectively arranged at the bottom of the weighing support (105), and the bottom of each weighing scale (202) is connected with the weighing support (201).

3. A pressure-loss agitator tank as defined in claim 1, wherein: spout foam trunk line (3) and set up the bottom of pitch foam outlet valve, the bottom of spouting foam trunk line (3) still is equipped with a plurality of spray pipes (301).

4. The method for preparing foamed asphalt by using a pressure-loss stirring tank according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:

s1: adding asphalt and additives into the stirring kettle (1);

s2: measuring the weight of the asphalt and additives by a weight scale (202) to control the accuracy;

s3: a motor (102) is started to drive a stirring blade (104) through a stirring shaft (103) to stir the asphalt and the additive, so that the asphalt and the additive are fully mixed;

s4: injecting compressed gas to pressurize the stirring kettle (1) to a specified pressure;

s5: injecting a certain amount of water;

s6: the fluid in the stirring kettle (1) is uniformly stirred by the stirring blade (104);

s7: and opening a foamed asphalt outlet valve, and allowing the fluid discharged from the stirring kettle (1) to enter a main foam spraying pipeline (3) to form foamed asphalt in the pressure loss process and enter a stirring cylinder.

Technical Field

The invention relates to the technical field of asphalt production, in particular to a decompression type stirring kettle and a method for manufacturing foamed asphalt by using the same.

Background

The foamed asphalt is prepared by adding a certain amount of water into high-temperature asphalt, rapidly gasifying the water by heating, mixing the water with the asphalt, forming explosive foam by the asphalt, increasing the surface area of the asphalt in a large proportion, greatly expanding the volume by several times to several tens of times, reducing the viscosity, then breaking the asphalt foam and only retaining a small amount of microscopic bubbles in the asphalt foam, and the asphalt expanded into the foam is called foamed asphalt.

The regeneration technology of the foam warm-mixed asphalt mixture refers to a process that the milled waste asphalt pavement material is mixed with new materials after the mixing amount of the milled waste asphalt pavement material is designed, then foam asphalt is added through special foaming equipment, the mixture is spread and leveled by a spreading machine after being mechanically mixed, and finally a compacting machine is used for compacting. The foam warm-mix recycled asphalt mixture technology is used for recycling waste asphalt mixtures, can effectively reduce the aging of asphalt, reduce the heating temperature during recycling, reasonably use the waste asphalt mixtures, and fully embody the advantages of waste utilization, energy conservation, emission reduction, environmental protection and the like.

Disclosure of Invention

The invention aims to provide a pressure-loss type stirring kettle and a method for preparing foamed asphalt by using the same, and the pressure-loss type stirring kettle is used for solving the technical problem that the foaming efficiency is too low due to complex foaming operation in the foaming method of foamed asphalt in the prior art.

The invention provides a decompression type stirring kettle which comprises a stirring kettle, a weighing platform and a main foam spraying pipeline, wherein the stirring kettle comprises a kettle body, a motor, a stirring shaft, a stirring blade and a weighing support, the weighing support is arranged on the outer side of the kettle body, the motor is arranged at the top of the kettle body, the stirring shaft is arranged in the kettle body and is connected with a main shaft of the motor, the stirring blade is arranged at the bottom of the stirring shaft, an asphalt inlet pipe, a water inlet pipe, a compressed gas inlet pipe and an additive inlet pipe are further arranged at the top of the kettle body, gate valves are arranged on the asphalt inlet pipe, the water inlet pipe, the compressed gas inlet pipe and the additive inlet pipe, and a foamed asphalt outlet valve is further arranged at the bottom of the kettle body.

Further, the weighing platform comprises weighing supports and weighing scales, the weighing scales are respectively arranged at the bottoms of the weighing supports, the bottom of each weighing scale is connected with the weighing support, the weighing scales are used for measuring the weight of the additive during the production of the foamed asphalt, the quantitative charging effect can be achieved, and the precision can be controlled.

Further, the main spray pipe is arranged at the bottom of the asphalt foam outlet valve, a plurality of spray pipes are further arranged at the bottom of the main spray pipe, and foam asphalt is formed in the main spray pipe 3 and the spray pipes 301 in the pressure loss process of the water and asphalt mixture fluid released from the stirring kettle 1.

A method for preparing foamed asphalt by using a decompression type stirring kettle comprises the following steps:

s1: and adding asphalt and additives into the stirring kettle.

S2: the weight of the asphalt and additives was measured by a weight scale to control the accuracy.

S3: the starting motor drives the stirring blades through the stirring shaft to stir the asphalt and the additive, so that the asphalt and the additive are fully mixed.

S4: and injecting compressed gas to pressurize the stirring kettle to a specified pressure.

S5: a fixed amount of water was injected.

S6: and the fluid in the stirring kettle is uniformly stirred by the stirring blade.

S7: and opening a foamed asphalt outlet valve, and allowing the fluid released from the stirring kettle to enter a main foam spraying pipeline to form foamed asphalt in the pressure loss process and enter a stirring cylinder.

Compared with the prior art, the invention has the beneficial effects that:

firstly, a compressed gas inlet pipe is arranged on the stirring kettle, a foamed asphalt outlet valve is arranged at the bottom of the stirring kettle, asphalt is added in a pressurization and decompression mode, an asphalt pump can be omitted, and the cost is greatly reduced;

secondly, the whole pipeline is closed by using a gate valve, and no asphalt smoke is discharged;

thirdly, the liquid-liquid mixing ratio is more uniform in gas-liquid mixing, so that the foaming effect is greatly improved, and the half-life period of the foamed asphalt is prolonged.

Fourthly, by using the method, the water is kept in a liquid state by stirring under pressure, the asphalt and the water are fully mixed by stirring, the fluid is sprayed out from the outlet by the pressure, and the foamed asphalt is generated instantly, so that the foaming effect is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

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

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a structural diagram of a second angle according to the present invention.

Reference numerals:

the device comprises a stirring kettle 1, a weighing platform 2, a main spray-foam pipeline 3, a kettle body 101, a motor 102, a stirring shaft 103, stirring blades 104, a weighing support 105, an asphalt inlet pipe 106, a water inlet pipe 107, a compressed gas inlet pipe 108, an additive inlet pipe 109, a gate valve 110, a weighing bracket 201, a weight scale 202 and a spray pipe 301.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, an embodiment of the present invention provides a pressure-loss type stirred tank, including a stirred tank 1, a weighing platform 2 and a main foam spraying pipe 3, where the stirred tank 1 includes a tank body 101, a motor 102, a stirring shaft 103, a stirring blade 104 and a weighing support 105, the weighing support 201 is disposed outside the tank body 101, the weighing support 201 is used to connect the weighing platform 2, the motor 102 is disposed on the top of the tank body 101, the stirring shaft 103 is disposed inside the tank body 101, the stirring shaft 103 is connected to a main shaft of the motor 102, the stirring blade 104 is disposed at the bottom of the stirring shaft 103, when the motor 102 operates, the stirring blade 104 is driven to rotate by the stirring shaft 103, so as to achieve a stirring effect, the top of the tank body 101 is further provided with an asphalt inlet pipe 106, a water inlet pipe 107, a compressed air inlet pipe 108 and an additive inlet pipe 109, the asphalt inlet pipe 106 is used for adding asphalt, the water inlet pipe 107 is used for adding water, the compressed gas inlet pipe 108 is used for adding compressed gas, the additive inlet pipe 109 is used for adding additives, gate valves 110 are arranged on the asphalt inlet pipe 106, the water inlet pipe 107, the compressed air inlet pipe 108 and the additive inlet pipe 109 and used for ensuring the sealing performance of the interior of the kettle body 101, and a foamed asphalt outlet valve is further arranged at the bottom of the kettle body 101 and used for releasing processed foamed asphalt fluid.

Preferably, the weighing platform 2 comprises a weighing support 201 and weighing scales 202, the weighing scales 202 are respectively arranged at the bottom of the weighing support 105, the bottom of each weighing scale is connected with the weighing support 201, and the weighing scales 202 are used for measuring the weight of the additive during the preparation of the foamed asphalt, so that the quantitative charging effect and the controllable precision can be achieved.

Preferably, the main foam spraying pipe 3 is arranged at the bottom of the asphalt foam outlet valve, a plurality of spray pipes 301 are further arranged at the bottom of the main foam spraying pipe 3, and foam asphalt is formed in the main foam spraying pipe 3 and the spray pipes 301 in the pressure loss process of the water and asphalt mixture fluid released from the stirring kettle 1.

A method for preparing foamed asphalt by using a decompression type stirring kettle comprises the following steps:

s1: asphalt and additives are added to the stirred tank 1.

S2: the weight of the asphalt and additives is measured by the weight scale 202 to control accuracy.

S3: the motor 102 is started to drive the stirring blade 104 through the stirring shaft 103 to stir the asphalt and the additive, so that the asphalt and the additive are fully mixed.

S4: the stirred tank 1 was pressurized to a prescribed pressure by injecting a compressed gas.

S5: a fixed amount of water was injected.

S6: the fluid in the stirring tank 1 is stirred uniformly by the stirring blade 104.

S7: and opening a foamed asphalt outlet valve, and allowing the fluid discharged from the stirring kettle 1 to enter a main foam spraying pipeline 3 to form foamed asphalt in the pressure loss process and enter a stirring cylinder.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.