CN203403062U - Bubble remover for asphalt - Google Patents
Bubble remover for asphalt Download PDFInfo
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- CN203403062U CN203403062U CN201320239958.7U CN201320239958U CN203403062U CN 203403062 U CN203403062 U CN 203403062U CN 201320239958 U CN201320239958 U CN 201320239958U CN 203403062 U CN203403062 U CN 203403062U
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- asphalt
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Abstract
The utility model discloses a bubble remover for asphalt. A sealed container containing liquid asphalt is vacuumized by a vacuum pump, so as to reduce air pressure inside the asphalt container, remove gas dissolved into the asphalt in a suction manner and discharge through an exhaust tube. The device comprises an upper cylindrical container and a lower cylindrical container without an upper cover, wherein at least one ultra-thin narrow transparent gap is formed at the bottom of the upper container; annular grooves and annular flanges, which are matched with each other, are respectively arranged on the bottom circumference of the lateral wall of the upper container and the top circumference of the lateral wall of the lower container; the bottom circumference of the lateral wall of the upper container and the top circumference of the lateral wall of the lower container are inserted into a whole through the annular grooves and the annular flanges; a silicon rubber sealing ring is utilized to seal in the middle part; an exhaust tube is arranged above the lateral wall of the lower container; the vacuum pump is started to vaccumize the lower container in work; viscous asphalt in the upper container flows into the lower container through the ultra-thin narrow transparent gap under the dual effects of pressure difference and gravity; bubbles in the asphalt are discharged in the suction manner.
Description
Technical field
The utility model relates to a kind of pitch air bubble eliminating device, particularly a kind of petroleum chemical industry assay laboratory pitch air bubble eliminating device.
Background technology
In petroleum chemical industry analysis experiment, often need to carry out analyzing and testing to oxidized bitumen, de-oiled asphalt.And the preparatory stage of analyzing and testing experimental sample usually needs except the bubble in deasphalting, to guarantee that analytical results can reflect the actual performance of pitch truly.The quality of pitch bubble removing effect directly affects verity and the accuracy of follow-up pitch laboratory analysis of data.
Chinese patent application CN101275940A discloses a kind of asphalt mixture freeze thawing splitting experiment vacuum full water and leaching method, when the method more easily solves mixture freeze thawing splitting experiment vacuum full water, a large amount of bubbles are attached to test specimen surface, be difficult for removing, affect bursting by freezing split test result, and after full water, soak inadequate problem.This invention belongs to the technical field of asphalt highway, does not relate to the technical problem of laboratory pitch bubble removing, and technical scheme and technology instruction that pitch deaeration is relevant are not provided yet.
Chinese patent application CN201534949U discloses a kind of asphalt heating thermostat, the mode that it adopts hotline heater to heat pitch, asphalt heating temperature is controlled in an effective scope, thereby can effectively adjust denseness, the bubble of road oil, improve the quality of pitch aggregate, the existing good mobility of pitch that makes output, can not make asphalt carbonization again; And heat-conducting oil pipes heated asphalt does not produce naked light, does not produce smog.This utility model provides a kind of can control asphalt temperature automatically, keeps the asphalt heating thermostat of liquid bitumen constant temperature, but is not specifically related to the technical theme of pitch bubble removing.
In industry, mostly adopt and will hold container direct heating to the 120 ℃ left and right of pitch at present, will be dissolved in bubble in pitch because be subject to thermic gas expansion and constantly rise to break in bituminous liquids surface, bubble, the gas in bubble enters atmosphere, thereby reaches the object of removing the bubble in pitch.But direct heating method removes the method for pitch bubble and has problems: the one, and, need to consume longer time and bubble removal effect also undesirable; The 2nd,, heat-up time, length was prone to the catabiosis of part pitch.Snead process is carried out the processing of pitch bubble removing, bubble decreasing ratio is generally in 85% left and right, although continue to improve temperature to the 200 ℃ left and right of asphalt heating, its bubble decreasing ratio also has lifting to a certain degree, and pitch Yin Gaowen occurs that aging phenomenon will obviously rise.Therefore, in actually operating, can only be by extending the time of asphalt heating/insulation with the bubble removing effect of assurance pitch.
Utility model content
The method that removes pitch bubble in order to overcome the direct heating/insulation of prior art employing exists because heating/soaking time is long and easily causes pitch part aging, and the bad problem of deaeration effect, the utility model provides a kind of pitch air bubble eliminating device, adopt this device to carry out bubble removing processing to pitch, not only improved pitch bubble decreasing ratio, and significantly shortened the required time of pitch bubble removing, thereby avoided the technical problem because of the part ageing of asphalt of asphalt heating/soaking time due to long.
Pitch air bubble eliminating device of the present utility model, comprise a cylindrical upper container and a cylindrical lower container without upper cover, the bottom of above-mentioned upper container offers at least one superfine long and narrow penetrating gap, wherein on the circumference of upper container bottom, be respectively equipped with the mutual annular recesses mating and convex annular edge with in the top circumference of described lower container, upper container is pegged graft and is integral by the mutual annular recesses mating and annular lip with described lower container, and its contact surface is by silica gel sealing washer sealing; This pitch air bubble eliminating device also includes vacuum pump, and lower container side wall top has a vapor pipe being interlinked to the outside with container, and lower container is connected with above-mentioned vacuum pump by this vapor pipe; The concrete meaning in described superfine long and narrow penetrating gap all refers to: No. 70 oxidized bitumens, and being heated to be no more than 120 ℃, reach can flow state, and the pitch under this kind of state can not pass through its outflow under the independent role of self gravitation.
In pitch air bubble eliminating device of the present utility model, the effect in long and narrow penetrating gap is, when pitch passes through long and narrow penetrating gap, the pitch that viscosity is very large will form superfine little strand shape, the specific surface area of pitch will obtain increasing very significantly, this distance that makes bubble rise to bituminous liquids surface from liquid bitumen inside shortens greatly, in the process that the bubble that is in addition dissolved in pitch flows downward because of the pitch at thickness, by extremely stretching, caused the thinning of liquid film of bubble peripheral surface, the shape of bubble also because of the mobile distortion that is stretched with asphalt cement;
Adopt vacuum pump to vacuumize processing to the lower container under air-tight state, the one, utilize upper and lower container air pressure poor, coordinate the deadweight of pitch, the pitch that viscosity is very high can be continued to flow to lower container by the superfine long and narrow penetrating gap of upper container diapire; The 2nd, by vacuum take-off, the bubble being dissolved in pitch in flow process is constantly expanded under the effect of inside and outside differential pressure.
Bubble in above-mentioned pitch is under the dual function of the inside and outside pressure reduction of bubble and constantly tensile deformation, at pitch, flow downward in process, the specific surface area of pitch extremely increases, bubble is constantly out of shape, expands, wraps up the continuous attenuation of pitch thickness of bubble, until bubble rises to bituminous liquids outside surface completely by bituminous liquids inside and breaks;
The gas discharging after bubble breaks is further aspirated by vacuum pump, and discharges through vapor pipe.
For guaranteeing that pitch has certain mobility, in the outer wall use silicon rubber heater of lower container and upper container, wrap up and being incubated.
The superfine long and narrow penetrating gap that the bottom of above-mentioned upper container is offered, is at least one or more.
The effect in the long and narrow penetrating gap of the utility model is, when pitch passes through long and narrow penetrating gap, the pitch that viscosity is very large will form superfine little strand shape, the specific surface area of pitch will obtain increasing very significantly, this distance that makes bubble rise to bituminous liquids surface from liquid bitumen inside shortens greatly, in the process that the bubble that is in addition dissolved in pitch flows downward because of the pitch at thickness, by extremely stretching, caused the thinning of liquid film of bubble peripheral surface, the shape of bubble also because of the mobile distortion that is stretched with asphalt cement;
Adopt vacuum pump to vacuumize processing to the lower container under air-tight state, the one, utilize upper and lower container air pressure poor, coordinate the deadweight of pitch, the pitch that viscosity is very high can be continued to flow to lower container by the superfine long and narrow penetrating gap of upper container diapire; The 2nd, by vacuum take-off, the bubble being dissolved in pitch in flow process is constantly expanded under the effect of inside and outside differential pressure.
Bubble in above-mentioned pitch is under the dual function of the inside and outside pressure reduction of bubble and constantly tensile deformation, at pitch, flow downward in process, the specific surface area of pitch extremely increases, bubble is constantly out of shape, expands, wraps up the continuous attenuation of pitch thickness of bubble, until bubble rises to bituminous liquids outside surface completely by bituminous liquids inside and breaks;
The gas discharging after bubble breaks is further aspirated by vacuum pump, and discharges through vapor pipe.
For guaranteeing that pitch has certain mobility, in the outer wall use silicon rubber heater of lower container and upper container, wrap up and being incubated.
Pitch air bubble eliminating device of the present utility model is simple in structure, pitch de-bubbled is effective, save time, easy to control, the treating processes required time of whole pitch de-bubbled can carry out adjusting to a certain degree as required.
Pitch air bubble eliminating device of the present utility model is due in its working process, the upper container that is added with molten state pitch by with lower container between groove and convex edge between engage and upper and lower container between silica gel sealing washer sealing, therefore, lower container is completely in sealed state, atmosphere can not enter in lower container, has guaranteed that time internal tank is all the time in air-tight state; Under the suction of vacuum pump, the air pressure of lower internal tank continues to reduce, when the air pressure of container is reduced to a certain degree instantly, the pitch of the molten state in upper container is under the effect of draught head between deadweight and upper and lower container, and pitch slowly flow to lower container by superfine long and narrow penetrating gap.
When pitch passes through long and narrow penetrating gap, the pitch that viscosity is very large forms filament shape, the specific surface area of pitch will be increased significantly, be dissolved in that therefore bubble wherein is extremely stretched and elongated, meanwhile, under the effect of external differential within it of above-mentioned bubble, constantly expand, wrap up the continuous attenuation of liquid film of bubble until bubble breaks, the gas discharging after bubble breaks is by vacuum pump suction, discharge through vapor pipe.
The time of heating/being incubated due to pitch bubble removing process medium pitch significantly shortens, and therefore there will not be problem of aging.The method that adopts long-time heating/insulation to carry out pitch deaeration with prior art is mainly utilized in pitch bubble to be heated and is constantly become greatly and from pitch inside, constantly rise to bituminous liquids surface and finally break and discharge gas, thereby removing the method that is dissolved in the bubble in pitch compares, adopt the pitch air bubble eliminating device of the present utility model to carry out pitch deaeration, avoided pitch because of the aging technical problem of part due to long-time heating/insulation.
And, the mode that the outer circumference surface that pitch air bubble eliminating device of the present utility model adopts silicon rubber heater to be wrapped in upper and lower container is incubated the pitch in container, not only heating surface area is large, operates also very easy.
In the deaeration process of pitch, the effective specific surface area of pitch is far longer than the surface-area of the available ratio under the direct heating method of prior art; Be dissolved in bubble in pitch and be constantly significantly stretch attenuate elongated and because of be dissolved in bubble inside and outside differential pressure in pitch cause wrapping up bubble under the dual function of continuous expansion extremely the continuous attenuation of liquid film, until bubble breaks, the gas discharging after bubble breaks is discharged by vacuum pump suction; The snead process that this and prior art adopt only just utilizes gas to be heated and the principle that expands, by extending the time of asphalt heating/insulation, to be dissolved in bubble in pitch by being heated, make the bubble in pitch due to expansion, constantly rise to the surface of liquid bitumen, and then until bubble break, completely different in the pitch bubble removing method principle of work in the direct entered environment atmosphere of gas discharging after bubble breaks.
Adopt pitch air bubble eliminating device of the present utility model to carry out in pitch deaeration treating processes, the gas discharging after bubble breaks is aspirated and is forced to discharge by vacuum pump in time, also be beneficial to pitch bubble removing process and along positive dirction, constantly carry out all the time, and the Back Up process that the gas discharging after there will not be bubble to break is adsorbed by asphalt cement again.
Further from principle, analyzing contrast pitch air bubble eliminating device of the present utility model carries out pitch deaeration processing and carries out the processing of pitch bubble removing with the direct heating/insulation of prior art employing, can find out, while adopting pitch air bubble eliminating device of the present utility model to carry out pitch deaeration, in the process that bubble breaks from bituminous liquids inside rises to the outside surface of bituminous liquids, the distance that bubble in pitch need to pass through, what its mean value adopted much smaller than prior art carries out direct heating to pitch, by being dissolved in bubble in pitch, from bituminous liquids is inner, constantly rise until break rising to the outside surface of bituminous liquids, the mean value of the distance of the required process of bubble in pitch therebetween.Therefore, adopt pitch air bubble eliminating device of the present utility model, more easily the bubble being dissolved in pitch is deviate from.
Experimental result shows, adopts pitch air bubble eliminating device of the present utility model to carry out the processing of pitch bubble removing, and pitch bubble decreasing ratio can reach more than 99%, the bubble decreasing ratio of snead process 85% left and right adopting higher than prior art far away.
Adopt pitch air bubble eliminating device of the present utility model to carry out the processing of pitch bubble removing, due to the time shorten that pitch is heated/be incubated, and pitch bubble removing process is carried out substantially under air-tight state, therefore, also reduce the generation of obnoxious flavour in experimental situation, be conducive to the health of experiment operator.
In sum, the utility model has substantive distinguishing features and progress with respect to prior art.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of pitch air bubble eliminating device deaeration flow process;
Fig. 2 is pitch air bubble eliminating device structural representation;
Fig. 3 be along the A-A shown in Fig. 2 to cross-sectional view;
Fig. 4 is the schematic diagram of slit on upper container diapire;
Fig. 5 is the schematic diagram of lower container side wall top vapor pipe.
Embodiment
By reference to the accompanying drawings the utility model is elaborated as follows:
Fig. 2 is the schematic diagram of pitch air bubble eliminating device building block.Pitch de-bubbled device shown in figure is by upper container 1, and the vapor pipe 6 that its bottom offers at least one superfine long and narrow penetrating gap 3, lower container 2 and lower container side wall top forms, and vapor pipe 69 is connected with vacuum pump 8 by the road; In conjunction with Fig. 2 and Fig. 3, can find out, upper container bottom sidewall upper groove 4 matches with the convex edge 5 on lower container top sidewall, has silica gel sealing packing ring 7 between upper and lower container.
Fig. 3 be along the A-A shown in Fig. 2 to cross-sectional view.Shown in figure, upper and lower container side wall contact surface has groove 4 and the flange 5 cooperatively interacting.
Fig. 1 is the schematic diagram of pitch air bubble eliminating device deaeration flow process.From Fig. 1, also the groove of container by mutual coupling and convex edge are inserted into global shape integral structure up and down.Shown in Fig. 1, silicon rubber heater 10 and silicon rubber heater 11 are wrapped in respectively on the peripheral circumferential face of upper container and lower container and are incubated.
Adopt the pitch air bubble eliminating device of said structure, its upper container 1 by with lower container 2 between groove 4 and convex edge 5 between coordinate, and silica gel sealing packing ring 7 sealings of passing through between upper and lower container, therefore, lower container 2 is completely in sealed state, and gas can not enter in lower container 2.Under the suction of vacuum pump 8, the air pressure of lower container 2 continues to reduce, when the air pressure of container 2 is reduced to a certain degree instantly, the pitch of the molten state in upper container 1 is under the effect of draught head between deadweight and up and down container, and pitch slowly flow to lower container by superfine long and narrow penetrating gap 3.When pitch passes through long and narrow penetrating gap 3, the specific surface area of pitch will obtain increasing very significantly, be dissolved in bubble in pitch and be constantly significantly stretch attenuate elongated and because of pressure reduction break under the dual function of continuous expansion extremely, the gas discharging after bubble breaks is further aspirated by vacuum pump 8, and discharges through vapor pipe 6.
The material of the vapor pipe of upper and lower container and lower container side wall top is 316L stainless steel.
During use, first silica gel sealing packing ring 7 is placed on the convex edge 4 on lower container 2 top sidewalls, the convex edge 5 that groove on upper container 1 bottom sidewall 4 is aimed on lower container 2 top sidewalls is in place, vacuum pump 8, pipeline 9 are connected successively with the vapor pipe 6 of lower container side wall top, use subsequently silicon rubber heater 10 and silicon rubber heater 11 respectively upper container 1 and lower container 2 to be wrapped up in to attached good heating and insulation; The need that are heated in advance mobility pitch to be processed is joined in upper container, then start vacuum pump and carry out the processing of pitch de-bubbled.
Before opening vacuum pump, because the viscosity of above-mentioned thick pitch is very high, liquid bitumen can not flow in container from the superfine long and narrow penetrating gap 4 of upper container bottom.
Adopt above-mentioned pitch air bubble eliminating device and direct heating method to carry out pitch deaeration contrast experiment:
By 1000 grams of No. 70 oxidized bitumens, being heated to be no more than 120 ℃, reach can flow state, and the pitch under this kind of state can not flow out by slit superfine on upper container diapire under the independent role of self gravitation.Stir and be divided into two duplicate samples: sample 1 and sample 2.
Wherein sample 2 carries out pitch deaeration processing by direct-fired method, sample 1 utilizes pitch air bubble eliminating device of the present utility model to carry out pitch deaeration processing, asphalt sample after respectively deaeration being processed is again carried out subsequent experimental under same experimental conditions, to detect the effect of contrast pitch deaeration.
Contrast and experiment is as follows:
As can be seen from the above table, utilize pitch air bubble eliminating device of the present utility model to remove the bubble in pitch, reach bubble and remove the required time of running balance and significantly shorten, the bubble decreasing ratio that the snead process that bubble decreasing ratio also adopts apparently higher than prior art is carried out pitch deaeration processing.
Follow-up contrast experiment's data from upper table can find out, the pitch extensibility of the sample 2 after deaeration is processed is starkly lower than the sample 1 after deaeration is processed, and catabiosis has to a certain degree appearred in the pitch of this interpret sample 2.
From the follow-up contrast experiment's data of upper table, can find out, use the direct heating method of prior art to remove bubble in pitch, because bubble removes not thoroughly, long-time heating sample exists part pitch to occur the reasons such as catabiosis, make analytical results repeatability poor, can not represent the actual performance of asphalt sample; And adopting pitch air bubble eliminating device of the present utility model to carry out the asphalt sample after pitch deaeration processing, collimation and the stability of the detection data in subsequent experimental process are all improved significantly.
Claims (4)
1. a pitch air bubble eliminating device, comprise a cylindrical upper container and a cylindrical lower container without upper cover, it is characterized in that, the bottom of described upper container offers more than at least one superfine long and narrow penetrating gap, on the circumference of described upper container bottom, be respectively equipped with the mutual annular recesses mating and convex annular edge with in the top circumference of described lower container, described upper container is pegged graft and is integral by the mutual annular recesses mating and annular lip with described lower container, described pitch air bubble eliminating device also includes vacuum pump, described lower container side wall top has a vapor pipe being interlinked to the outside with container, described vapor pipe is connected with described vacuum pump, the concrete meaning in described superfine long and narrow penetrating gap all refers to: No. 70 oxidized bitumens, and being heated to be no more than 120 ℃, reach can flow state, and the pitch under this kind of state can not flow out by this slit under the independent role of self gravitation.
2. pitch air bubble eliminating device according to claim 1, is characterized in that, when the annular recesses of described upper container and described lower container and annular lip are pegged graft, passes through silica gel sealing washer sealing between described annular recesses and the contact surface of described annular lip.
3. pitch air bubble eliminating device according to claim 1 and 2, is characterized in that, also includes silicon rubber heater, and described silicon rubber heater is wrapped in heating and thermal insulation on the sidewall outer circumference surface of upper and lower container.
4. pitch air bubble eliminating device according to claim 3, is characterized in that, the material of described upper and lower container and described vapor pipe is Stainless steel 316 L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320239958.7U CN203403062U (en) | 2013-05-07 | 2013-05-07 | Bubble remover for asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320239958.7U CN203403062U (en) | 2013-05-07 | 2013-05-07 | Bubble remover for asphalt |
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| Publication Number | Publication Date |
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| CN203403062U true CN203403062U (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320239958.7U Expired - Lifetime CN203403062U (en) | 2013-05-07 | 2013-05-07 | Bubble remover for asphalt |
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| CN (1) | CN203403062U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802186A (en) * | 2017-08-24 | 2018-11-13 | 重庆钢铁(集团)有限责任公司 | A kind of ultrasonic type Ndt Methods For Steel Tubes |
| CN108918230A (en) * | 2018-08-24 | 2018-11-30 | 河北工程大学 | A kind of preparation method of briquet |
-
2013
- 2013-05-07 CN CN201320239958.7U patent/CN203403062U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802186A (en) * | 2017-08-24 | 2018-11-13 | 重庆钢铁(集团)有限责任公司 | A kind of ultrasonic type Ndt Methods For Steel Tubes |
| CN109425660A (en) * | 2017-08-24 | 2019-03-05 | 重庆钢铁(集团)有限责任公司 | A kind of steel tube surface defects detection flaw detection portion structure |
| CN108918230A (en) * | 2018-08-24 | 2018-11-30 | 河北工程大学 | A kind of preparation method of briquet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |