CN210797174U - Foaming equipment for foamed asphalt - Google Patents
Foaming equipment for foamed asphalt Download PDFInfo
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- CN210797174U CN210797174U CN201921304702.3U CN201921304702U CN210797174U CN 210797174 U CN210797174 U CN 210797174U CN 201921304702 U CN201921304702 U CN 201921304702U CN 210797174 U CN210797174 U CN 210797174U
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Abstract
The utility model relates to the technical field of asphalt and discloses foaming equipment of foamed asphalt, which comprises a foaming bin, wherein a foaming cavity is arranged in the foaming bin, an upper inlet pipe is arranged at the upper part of the foaming bin, and an inlet pipe is connected with an asphalt pipe for conveying hot asphalt; a side inlet pipe is arranged at the side edge of the foaming bin, and the side inlet pipe is connected with a foaming pipe for conveying cold water and air; the lower part of the foaming bin is provided with a spray head, a cold water channel for conveying cold water and an air channel for conveying compressed air are arranged in the foaming pipe, and the cold water channel and the air channel are arranged in a separated mode; the utility model provides a foam asphalt's foaming equipment pours into the pitch of heating into toward the foaming intracavity through last inlet pipe, and cold water and compressed air get into the foaming chamber via the side inlet pipe in, and hot pitch, cold water and compressed air react in the foaming chamber, become foam asphalt, and foam asphalt is discharged by the shower nozzle, and whole foaming equipment's simple structure, the foaming operation brief introduction improves foaming efficiency greatly.
Description
Technical Field
The patent of the utility model relates to a technical field of pitch particularly, relates to foamed asphalt's foaming equipment.
Background
The foamed asphalt is prepared by adding a certain amount of cold 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 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.
Among the prior art, utilize the foaming equipment to foam to pitch to form foamed asphalt, present foaming equipment structure is too complicated, makes foaming complex operation, reduces foaming efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a foam asphalt's foaming equipment aims at solving prior art, and foam asphalt's foaming equipment exists that the structure is too complicated, leads to the problem that foaming efficiency is low excessively.
The utility model is realized in such a way, the foaming device of the foamed asphalt comprises a foaming chamber, a foaming cavity is arranged in the foaming chamber, an upper inlet pipe is arranged at the upper part of the foaming chamber and is communicated with the foaming cavity, and the inlet pipe is connected with an asphalt pipe for conveying hot asphalt; a side inlet pipe is arranged on the side edge of the foaming bin and communicated with the foaming cavity, and the side inlet pipe is connected with a foaming pipe for conveying cold water and air; the lower part of the foaming bin is provided with a spray head which is communicated with the foaming cavity; the foaming pipe is internally provided with a cold water channel for conveying cold water and an air channel for conveying compressed air, and the cold water channel is arranged in a way of being separated from the air channel.
Further, the upper inlet pipe is provided with a lower extension extending into the foaming cavity, a plurality of first through holes are arranged in the side wall of the lower extension, and the first through holes are arranged around the periphery of the lower extension; the first through holes are arranged in a flat shape, and along the axial direction of the lower extension section, the adjacent first through holes are arranged in a staggered mode.
Further, the inner side wall of the foaming chamber is provided with an inner annular wall which is arranged around the periphery of the lower section and is arranged towards the lower section; in the top-down direction, the inner annular wall is obliquely arranged away from the lower extension; the side inlet pipe is arranged below the inner annular wall, and the bottom of the upper inlet pipe is higher than that of the inner annular wall.
Furthermore, the bottom of the foaming cavity is obliquely arranged downwards towards the center, the spray head is communicated with the center of the bottom of the foaming cavity, the upper part of the spray head extends into the foaming cavity to form an upper extension section, and the height of the upper extension section is lower than the height of the periphery of the bottom of the foaming cavity.
Furthermore, the inner side wall of the foaming cavity is provided with a recoil plate, and the recoil plate is obliquely arranged inwards along the direction from top to bottom; the recoil plate is oppositely arranged towards the side inlet pipe and is positioned below the side inlet pipe.
Furthermore, a partition plate is arranged between the cold water channel and the air channel and divides the cold water channel and the air channel, the partition plate extends along the axial direction of the foaming pipe, a plurality of communication holes are formed in the partition plate and are communicated with the cold water channel and the air channel, the communication holes are arranged at intervals along the length direction of the partition plate, and the adjacent communication holes are arranged in a vertically staggered mode.
Further, along the axial direction of the foaming pipe, the separation plate is arranged in a bent and spiral manner.
Further, the side inlet pipe is provided with a side extension section extending into the foaming cavity, and a movable rotating plate is arranged in the side extension section; along the length direction of the rotating plate, side end faces are formed on two sides of the rotating plate respectively, a rotating shaft is connected to the middle of the rotating plate, and the rotating shaft is overlapped with the central axis of the foaming pipe; the partition plate is provided with an inner end face facing the foaming cavity, one end of the rotating shaft is fixedly connected with the middle part of the rotating plate, and the other end of the rotating shaft is rotatably connected with the inner end face of the partition plate; and a gap is reserved between the side end surface of the rotating plate and the inner side wall of the side extension section.
Further, the rotating plate is provided with an outer end face facing the foaming cavity, and two inclined plates are connected to the outer end face of the rotating plate and are symmetrical around the rotating shaft; the inclined plate extends along the length of the outer end face of the rotating plate, the inclined plate is arranged obliquely relative to the rotating plate, and the two inclined plates are inclined in opposite directions.
Furthermore, be equipped with in the side in foaming storehouse a plurality of side import pipe, along the direction of height in foaming storehouse, it is a plurality of side import pipe is upper and lower staggered arrangement.
Compared with the prior art, the utility model provides a foam asphalt's foaming equipment pours into the pitch of heating into toward the foaming intracavity through last inlet pipe, and cold water and compressed air are in the foaming chamber via the entering of side inlet pipe, and hot pitch, cold water and compressed air react in the foaming intracavity, become foam asphalt, and foam asphalt is discharged by the shower nozzle, and whole foaming equipment's simple structure, the foaming operation brief introduction improves foaming efficiency greatly.
Drawings
FIG. 1 is a schematic front view of a foaming apparatus for foamed asphalt provided by the present invention;
fig. 2 is a schematic front view of an upper inlet pipe provided by the present invention;
fig. 3 is a schematic front view of the connection between the partition board and the rotating board provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1-3, the preferred embodiment of the present invention is shown.
The foaming equipment for the foamed asphalt comprises a foaming bin 100, wherein a foaming cavity 101 is arranged in the foaming bin 100, an upper inlet pipe 106 is arranged at the upper part of the foaming bin 100, the upper inlet pipe 106 is communicated with the foaming cavity 101, the upper inlet pipe 106 is connected with an asphalt pipe 104 for conveying hot asphalt, and the heated asphalt enters the foaming cavity 101 through the asphalt pipe 104 and the upper inlet pipe 106 by external asphalt equipment; a side inlet pipe 110 is provided at a side of the foaming chamber 100, the side inlet pipe 110 is communicated with the foaming chamber 101, a foaming pipe 107 for delivering cold water and air is connected to the side inlet pipe 110, and external compressed air and cold water enter the foaming chamber 101 through the foaming pipe 107 and the side inlet pipe 110.
The lower part of the foaming bin 100 is provided with a spray head 113, and the spray head 113 is communicated with the foaming cavity 101; the foaming tube 107 has a cold water passage for feeding cold water and an air passage for feeding compressed air therein, the cold water passage being arranged apart from the air passage.
Above-mentioned foaming equipment of foam pitch who provides injects the pitch of heating into foaming chamber 101 through last inlet pipe 106, and cold water and compressed air get into foaming chamber 101 via side import pipe 110 in, and hot pitch, cold water and compressed air react in foaming chamber 101, become foam pitch 200, and foam pitch 200 is discharged by shower nozzle 113, whole foaming equipment's simple structure, and the foaming operation brief introduction improves foaming efficiency greatly.
When cold water comes into contact with hot bitumen (typically above 150 ℃), the following chain reaction will occur:
1) energy exchange is carried out between the hot asphalt and the surface of the cold water drops, the temperature of the water drops is increased, and meanwhile, the temperature of the surrounding asphalt is reduced;
2) when the temperature of the water drops reaches more than 100 ℃, the energy transferred by the asphalt exceeds the latent heat of the steam, so that the water on the surface is evaporated, and the temperature of the asphalt around the water is further reduced;
3) the water is evaporated at high temperature to generate steam which expands rapidly; the steam bubbles are forced under pressure into the continuous phase of the bitumen, thereby forming a bitumen froth. The wrapped steam bubble may also have unevaporated residual water droplets. The surface tension of the bitumen film, which cools slightly on the surface of the foam, allows the foam to be present;
4) the asphalt foam expands rapidly, the surface tension of the asphalt film and the steam pressure of the package have mutual resisting action, and in the expansion process, the steam pressure slowly decreases and the surface tension gradually increases until the two are balanced. However, if during this process the steam bubbles expand beyond the tensile limit of the bitumen, the foam collapses;
5) for larger water droplets, the surface formed steam insulation may limit further vaporization of the inner water droplets.
The upper inlet pipe 106 is provided with a lower section 105 extending into the foaming chamber 101, a plurality of first through holes 114 are formed in the side wall of the lower section 105, and the plurality of first through holes 114 are arranged around the periphery of the lower section 105, so that the asphalt is sprayed out not only downwards but also axially from the upper inlet pipe 106 after entering from the upper inlet pipe 106; the first through holes 114 are arranged in a flat shape, and adjacent first through holes 114 are arranged in a staggered manner in the axial direction of the lower section 105, so that the range of the axial spraying of the asphalt to the upper inlet pipe 106 can be increased.
The inner side wall of the foaming chamber 101 is provided with an inner annular wall 102, the inner annular wall 102 being disposed around the outer circumference of the lower section 105 and being disposed toward the lower section 105; in a top-down direction, the inner annular wall 102 is obliquely arranged away from the lower section 105; side inlet pipe 110 is disposed below inner annular wall 102 with the bottom of upper inlet pipe 106 being higher than the bottom of inner annular wall 102. After being sprayed towards the axial direction of the upper inlet pipe 106, the asphalt is sprayed onto the inner annular wall 102, and the asphalt can be reflected and quickly fall into the lower part of the foaming chamber 101 under the blocking action of the inner annular wall 102.
The bottom of the foaming cavity 101 is arranged obliquely downwards towards the center, and the spray head 113 is communicated with the center of the bottom of the foaming cavity 101, so that after the foamed asphalt 200 is formed by foaming the asphalt, the foamed asphalt 200 is favorably collected at the center of the bottom of the foaming cavity 101 and is sprayed out through the spray head 113.
The upper portion of the nozzle 113 extends to the inside of the foaming chamber 101 to form an upper extension section 112, and the height of the upper extension section 112 is lower than the peripheral height of the bottom of the foaming chamber 101. Thus, some residual impurities may settle in the area between the upper extension section 112 and the bottom of the foaming chamber 101 without being ejected with the foamed asphalt 200.
The inner side wall of the foaming cavity 101 is provided with a recoil plate 103, and the recoil plate 103 is arranged in an inward inclined manner along the direction from top to bottom; the recoil plate 103 is oppositely disposed toward the side inlet pipe 110 and is located below the side inlet pipe 110. Because cold water and compressed air are ejected towards the direction of the recoil plate 103, the foamed asphalt 200 formed after asphalt foaming can also be accumulated towards the direction of the recoil plate 103, and under the blocking action of the recoil plate 103, the reaction flows towards the direction of the lower outlet pipe, so that the foamed asphalt 200 can be conveniently discharged.
A partition plate 301 is arranged between the cold water channel and the air channel, the partition plate 301 divides the cold water channel and the air channel, the partition plate 301 extends along the axial direction of the foaming pipe 107, a plurality of communication holes 302 are arranged in the partition plate 301, the communication holes 302 are communicated with the cold water channel and the air channel, the communication holes 302 are arranged at intervals along the length direction of the partition plate 301, and the adjacent communication holes 302 are arranged in a vertical staggered mode.
Through setting up intercommunicating pore 302, at the in-process of pouring into cold water and compressed air toward side inlet pipe 110, cold water and compressed air can be each other in cold water passageway and air passage convection for by the mixing of cold water and compressed air of side inlet pipe 110 water spray, can be for the water vaporific etc., reduce the volume of cold water droplet, be favorable to the foaming of pitch more.
The partition plate 301 is arranged in a curved spiral shape along the axial direction of the foaming pipe 107, so that the cold water and the compressed air flow in a spiral shape during the flow, the flow rate is increased, and after the mixture of the cold water and the compressed air is ejected from the side inlet pipe 110, the ejection range and the speed can be increased due to the spiral ejection.
The side inlet pipe 110 is provided with a side extension section 108 extending into the foaming cavity 101, and a movable rotating plate 304 is arranged in the side extension section 108; along the length direction of the rotating plate 304, two sides of the rotating plate 304 form side end faces respectively, the middle part of the rotating plate 304 is connected with a rotating shaft 303, and the rotating shaft 303 is superposed with the central axis of the foaming pipe 107; the partition plate 301 is provided with an inner end surface facing the foaming cavity 101, one end of the rotating shaft 303 is fixedly connected with the middle part of the rotating plate 304, and the other end of the rotating shaft 303 is rotatably connected with the inner end surface of the partition plate 301; a space is provided between the side end surface of the rotating plate 304 and the inner side wall of the side extension 108.
By providing the rotating plate 304, when the mixture of the cold water and the compressed air passes through the side inlet pipe 110, the rotating plate 304 is impacted, and thus, the rotating plate 304 is forced to rotate, so that the mixture of the cold water sprayed out of the side inlet pipe 110 and the compressed air is thrown away, and the spraying range is increased.
The rotating plate 304 has an outer end surface facing the foaming chamber 101, and two inclined plates 305 are connected to the outer end surface of the rotating plate 304, and the two inclined plates 305 are symmetrical around the rotating shaft; the inclined plate 305 extends along the length of the outer end face of the rotating plate 304, the inclined plate 305 is arranged obliquely with respect to the rotating plate 304, and the two inclined plates 305 are inclined in opposite directions. By providing two inclined plates 305, the rotating plate 304 can be made to rotate faster under impact and contribute to the whipping of the cold water mixed with the air.
A plurality of side inlet pipes 110 are arranged in the side of the foaming chamber 100, and the side inlet pipes 110 are arranged in a vertically staggered manner along the height direction of the foaming chamber 100. Spraying cold water and compressed air into the foaming chamber 101 from multiple directions can facilitate the foaming of asphalt.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The foaming equipment for the foamed asphalt is characterized by comprising a foaming bin, wherein a foaming cavity is arranged in the foaming bin, an upper inlet pipe is arranged at the upper part of the foaming bin and is communicated with the foaming cavity, and the inlet pipe is connected with an asphalt pipe for conveying hot asphalt; a side inlet pipe is arranged on the side edge of the foaming bin and communicated with the foaming cavity, and the side inlet pipe is connected with a foaming pipe for conveying cold water and air; the lower part of the foaming bin is provided with a spray head which is communicated with the foaming cavity; the foaming pipe is internally provided with a cold water channel for conveying cold water and an air channel for conveying compressed air, and the cold water channel is arranged in a way of being separated from the air channel.
2. The apparatus for foaming asphalt foam according to claim 1, wherein the upper inlet pipe has a lower section extending into the foaming chamber, and a plurality of first through holes are provided in a side wall of the lower section, and are arranged around the outer circumference of the lower section; the first through holes are arranged in a flat shape, and along the axial direction of the lower extension section, the adjacent first through holes are arranged in a staggered mode.
3. The apparatus for foaming asphalt foam according to claim 2, wherein the inner side wall of the foaming chamber is provided with an inner annular wall which is disposed around the outer circumference of the lower section and is disposed toward the lower section; in the top-down direction, the inner annular wall is obliquely arranged away from the lower extension; the side inlet pipe is arranged below the inner annular wall, and the bottom of the upper inlet pipe is higher than that of the inner annular wall.
4. The apparatus for foaming asphalt according to any one of claims 1 to 3, wherein the bottom of the foaming chamber is inclined downward toward the center, the nozzle communicates with the center of the bottom of the foaming chamber, and the upper portion of the nozzle extends into the foaming chamber to form an upper extension section, and the height of the upper extension section is lower than the height of the periphery of the bottom of the foaming chamber.
5. The apparatus for foaming asphalt according to any one of claims 1 to 3, wherein the inner side wall of the foaming chamber is provided with a back-flushing plate, and the back-flushing plate is arranged in an inward inclined manner in the top-down direction; the recoil plate is oppositely arranged towards the side inlet pipe and is positioned below the side inlet pipe.
6. The apparatus for foaming foamed asphalt according to any one of claims 1 to 3, wherein a partition plate is provided between the cold water passage and the air passage, the partition plate divides the cold water passage and the air passage, the partition plate extends in the axial direction of the foaming pipe, the partition plate is provided with a plurality of communication holes, the communication holes communicate with the cold water passage and the air passage, the communication holes are arranged at intervals along the longitudinal direction of the partition plate, and adjacent communication holes are arranged in a vertically staggered manner.
7. The apparatus for foaming asphalt foam according to claim 6, wherein the partition plate is arranged in a curved spiral along the axial direction of the foaming pipe.
8. The apparatus for foaming asphalt foam according to claim 6, wherein the side inlet pipe has a side extension extending into the foaming chamber, and a movable rotating plate is disposed in the side extension; along the length direction of the rotating plate, side end faces are formed on two sides of the rotating plate respectively, a rotating shaft is connected to the middle of the rotating plate, and the rotating shaft is overlapped with the central axis of the foaming pipe; the partition plate is provided with an inner end face facing the foaming cavity, one end of the rotating shaft is fixedly connected with the middle part of the rotating plate, and the other end of the rotating shaft is rotatably connected with the inner end face of the partition plate; and a gap is reserved between the side end surface of the rotating plate and the inner side wall of the side extension section.
9. The apparatus for foaming asphalt foam according to claim 8, wherein the rotating plate has an outer end surface facing the foaming chamber, and two inclined plates are connected to the outer end surface of the rotating plate, and are symmetrical about the rotating shaft; the inclined plate extends along the length of the outer end face of the rotating plate, the inclined plate is arranged obliquely relative to the rotating plate, and the two inclined plates are inclined in opposite directions.
10. The apparatus for foaming asphalt according to any one of claims 1 to 3, wherein a plurality of the side inlet pipes are provided in the side of the foaming chamber, and the side inlet pipes are arranged in a vertically staggered manner along the height direction of the foaming chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921304702.3U CN210797174U (en) | 2019-08-10 | 2019-08-10 | Foaming equipment for foamed asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921304702.3U CN210797174U (en) | 2019-08-10 | 2019-08-10 | Foaming equipment for foamed asphalt |
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| Publication Number | Publication Date |
|---|---|
| CN210797174U true CN210797174U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921304702.3U Active CN210797174U (en) | 2019-08-10 | 2019-08-10 | Foaming equipment for foamed asphalt |
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| CN (1) | CN210797174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424217A (en) * | 2019-08-10 | 2019-11-08 | 深圳市市政工程总公司 | The foaming machine of foamed asphalt |
-
2019
- 2019-08-10 CN CN201921304702.3U patent/CN210797174U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424217A (en) * | 2019-08-10 | 2019-11-08 | 深圳市市政工程总公司 | The foaming machine of foamed asphalt |
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