Three-time oil gas recovery processing device of high-efficiency energy-saving gas station
Technical Field
The invention relates to the technical field of gasoline recovery, in particular to a three-time oil gas recovery processing device of a high-efficiency energy-saving gas station.
Background
The main components of the oil gas are benzene, dimethylbenzene, ethylbenzene and other hydrocarbon compounds, which belong to carcinogenic substances; when the oil gas is filled, the oil gas leakage will cause serious influence, not only cause fuel waste, and cause serious pollution to the environment, in order to avoid oil gas leakage and waste, oil gas recovery means that in the process of loading and unloading gasoline and filling oil for vehicles, the volatilized gasoline oil gas is collected and can be recovered by adopting an oil gas recovery device, the existing oil gas recovery device comprises a primary recovery device, a secondary recovery device and a tertiary recovery device, when the oil gas is recovered, the gas discharged from the oil tank is sent into the oil tank through a pipeline by a vacuum pump, the oil gas is liquefied and filtered well, more harmful substances still exist when part of the gas is discharged outwards, and the recovery effect and efficiency are required to be improved, so that the use effect of equipment is improved by the tertiary oil gas recovery treatment device of the high-efficiency energy-saving oil gas station is necessary to be provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a three-time oil gas recovery processing device of a high-efficiency energy-saving gas station so as to solve the problems in the prior art.
In order to achieve the above object, the present invention is realized by the following technical scheme: the three-time oil gas recovery processing device comprises a mounting box body, an oil tank arranged at the bottom of the mounting box body and an oil pumping pipe arranged on one side of the mounting box body and communicated with the interior of the oil tank, wherein an oil pump and an oil-gas separator are arranged on the oil pumping pipe, the oil-gas separator can separate gas and liquid, the oil-gas separator is arranged at the rear end of the oil pump, an exhaust end of the oil-gas separator is connected with an air return pipe, the air return pipe is connected with a condensing box, the recovered oil gas is condensed and liquefied through the condensing box, an oil outlet at the bottom of the condensing box is connected with a multistage cooling filter assembly, and the bottom of the multistage cooling filter assembly is connected with an oil return pipe and is communicated with the interior of the oil tank through the oil return pipe; the air return pipe is provided with an air compressor and a first one-way valve in the middle, the first one-way valve is arranged at the rear end of the air compressor, the air compressor can accelerate the flow speed of air and can raise the certain temperature of oil gas, and then the oil gas enters the condensing box for condensation; the multistage cooling filter assembly comprises coiled pipes, the coiled pipes are distributed in an S-shaped surrounding manner, the flowing distance of oil gas in the coiled pipes is improved, the head ends of the coiled pipes are connected with the bottom of a condensation cavity of a condensing box, so that condensed gasoline and oil gas of the condensing box can enter the coiled pipes, and the tail ends of the coiled pipes are connected with exhaust pipes in a flange mode, and the exhaust pipes are convenient to detach and install;
the double-pipe unidirectional control valve structure is used for taking oil through including the first body and the second body that are linked together, and the oil return pipe is connected to the upper side inlet of first body, then gets into and realize dual transport and the effect of straining oil in first body and the second body, has improved availability factor, first body and the upper side integration intercommunication of second body set up the connecting pipe, and first body upper side inlet internally mounted has the filter tube, and a plurality of filtration pores have been seted up to the filter tube, can primarily filter recovered fluid, and this filter tube and connecting pipe intercommunication, and most more turbid fluid can directly get into the second body through the connecting pipe and carry, just the inside embedding in second body top is equipped with dismantled intensive section of thick bamboo, intensive section of thick bamboo inside and connecting pipe intercommunication set up, and the connecting pipe gets into more turbid fluid and can get into intensive section of thick bamboo in secondary and filter, obtains purer fluid, improves the quality of retrieving.
The further improvement is that: the plurality of kinks of coiled tube upside communicate with blast pipe flange respectively, and the oil gas filter is installed respectively to each port inboard of blast pipe, filters oil gas simultaneously through a plurality of oil gas filters, avoids the comparatively concentrated filter effect that influences of oil gas.
The further improvement is that: in order to prevent external gas from entering the exhaust pipe, a second one-way valve is arranged at the tail end of the exhaust pipe, and the oil gas filter is an oily activated carbon filter screen and fully filters oil gas by using activated carbon.
The further improvement is that: the oil return pipe is characterized in that a plurality of bending parts on the lower side of the coiled pipe are respectively connected with oil inlet ports of the oil return pipe in a flange mode, a double-pipe one-way control valve and a flow valve are respectively arranged at the tail end of the oil return pipe, and the flow valve is distributed at the rear end of the double-pipe one-way control valve and used for detecting recovered flow.
The further improvement is that: the water cooler and the water cooling pipe connected with the water cooler are installed in the installation box body, and the water cooling pipe is tightly attached to the surface of the coiled pipe and used for reducing the temperature of the coiled pipe.
The further improvement is that: the water outlet end at the lower side of the second pipe body and the middle part of the first pipe body are respectively provided with an opening and closing butterfly valve, the opening and closing butterfly valve is rotationally provided with a valve rod blade, the outer edge of the valve rod blade is attached to the inner wall of the opening and closing butterfly valve, and the opening and closing states of the first pipe body and the second pipe body can be controlled through the opening and closing butterfly valve;
wherein, open and close butterfly valve inner wall both sides are provided with the activity route recess of rotatory hugging closely in valve rod blade both sides, can closely laminate with activity route recess inner wall when the valve rod blade rotates to close for both are connected inseparabler, also can further paste between the two and establish the rubber pad and improve the seal.
The further improvement is that: the utility model discloses a hydraulic oil tank, including first body and second body, first body and second body are inside all to be provided with check mechanism, and this check mechanism is including fixing at the last bucket dish and the lower edge of first body and second body inner wall at the interval respectively along and the activity sets up the protruding slider between last bucket dish and lower edge, goes up bucket dish upside and presents eight shapes, and the middle part is the fretwork, protruding slider and last bucket dish bottom can closely laminate, protruding slider outside respectively with first body and second body inner wall adaptation, protruding slider bottom edge can block to establish on lower edge, and protruding slider can be according to the corresponding upper and lower sliding displacement of the size of first body and second body internal oil hydraulic pressure or oil tank internal oil pressure like this.
The further improvement is that: the convex sliding part structure comprises a convex block, the outer curved surface of the convex block is respectively in sliding fit with the inner walls of the first pipe body and the second pipe body, a convex part is arranged on the upper side of the convex block, a hollow middle hole is formed in the middle of the convex part, a plurality of side holes communicated with the middle hole are formed in the outer periphery of the lower side of the convex part, the convex part of the convex block tightly penetrates through the middle of the upper bucket disc, and each side hole of the convex part is transversely arranged towards the middle of the upper bucket disc;
a plurality of drainage through holes are distributed around the lower side of the convex block, the drainage through holes vertically face the bottom surface of the upper bucket disc, when the oil pressure of the downward flowing of the first pipe body and the second pipe body is larger than the oil gas pressure in the oil tank, the oil pressure pushes the convex block downwards to displace, so that the side holes on the side surface of the convex part are lower than the upper bucket disc, the recovered oil can enter the middle holes, then enter the lower part of the upper bucket disc from the side holes, and then flow downwards into the oil tank through the plurality of drainage through holes on the convex block; conversely, when the oil gas pressure in the oil tank is greater than the oil pressure of the downward flowing of the first pipe body and the second pipe body, the convex blocks push upwards to displace and tightly cling to the bottom surface of the upper bucket disc under the action of oil gas, so that the closing is realized, and the oil backflow is prevented.
The further improvement is that: the side of the dense filter cylinder is provided with the through hole which is directly communicated with the connecting pipe, so that turbid recovered oil enters the dense filter cylinder, and as the dense filter cylinder is internally overlapped with a plurality of matched convex filter plates which can be overlapped according to the use requirement, the multi-layer filtration is formed, the filtration effect on the oil is further improved, the convex filter plates are arranged in a shape with high middle and low outer side, the oil flows to two sides preferentially in the conveying process, the filtered impurities are concentrated on the lower periphery and the inner wall of the dense filter cylinder, the layered filtration effect is good, the later filtration and cleaning are convenient, and meanwhile, each dense filter cylinder is provided with a middle hole, so that part of oil can flow downwards to each layer of filtration rapidly, and the blockage of the dense filter cylinder is avoided after long-term filtration and use;
the top of the compact filter cylinder is connected with the threaded sealing plug through screw locking, the outside of the threaded sealing plug is provided with threads and screwed with the threads of the pipe orifice at the top of the second pipe body, and the connection is more stable through secondary locking and reinforcement of the screws at the upper side, so that the compact filter cylinder can be spirally disassembled along with the threaded sealing plug, the compact filter cylinder is conveniently disassembled from the threaded sealing plug, and the inside of the compact filter cylinder is also conveniently cleaned or replaced by the raised filter plates, so that the compact filter cylinder is simple and convenient to use.
The further improvement is that: the top of the threaded sealing plug is fixedly provided with a handle, a stress point is provided for rotating the threaded sealing plug, and the threaded sealing plug is convenient to use.
The further improvement is that: the installation box is internally provided with a first airtight cavity and a second airtight cavity, the first airtight cavity is arranged on the upper side of the second airtight cavity, the coiled pipe, the water cooler and the water cooling pipe are all arranged on the inner side of the first airtight cavity, the oil tank is arranged in the second airtight cavity, and the airtight effect of the whole equipment is improved.
By adopting the technical scheme, compared with the prior art, the device provided by the invention has the following advantages:
the structure of the invention is ingenious and stable, after the oil-gas separator separates oil gas, the air compressor works to compress the oil gas, and the oil gas is integrated into the condensing box to be condensed quickly, so that the gas is effectively converted into liquid, the gasoline can enter the multistage cooling filter assembly and then flow into the oil tank again through the oil return pipe, and the multistage cooling filter assembly can fully filter part of the oil gas, so that the discharged gas can be effectively purified, and the invention is more energy-saving and environment-friendly in use;
the water cooling pipe is arranged to directly cool the multi-stage cooling filter assembly, so that the temperature of the multi-stage cooling filter assembly can be reduced at the same time, and the condensation effect of gasoline can be further improved;
the double-pipe one-way control valve is arranged on the oil return pipe, so that the conveying and filtering effects of oil liquid can be improved, the oil liquid can be controlled to be opened and closed, the oil liquid and the oil liquid can be prevented from flowing reversely, and the oil liquid can be maintained and used in the later period conveniently;
the first airtight cavity and the second airtight cavity are arranged, so that the tightness can be improved, the outward outflow of oil gas and cold air is prevented, the condensation and sealing effects on the oil gas are improved, the use is relatively stable and efficient, and the device has positive and beneficial use effects and remarkable progress compared with the prior art.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a multi-stage cooling filter assembly of the present invention;
FIG. 3 is a schematic view of the structure of the mounting case of the present invention;
FIG. 4 is a schematic structural view of a double-pipe one-way control valve of the present invention;
FIG. 5 is a schematic view showing the internal structure of the double-pipe one-way control valve of the present invention;
FIG. 6 is a schematic view showing the structure of the dense filter cartridge of the present invention in a disassembled state of the double-pipe one-way control valve;
FIG. 7 is a schematic view of a dense filter cartridge of the present invention;
FIG. 8 is a schematic diagram of the structure of the on-off butterfly valve of the present invention;
in the figure: the installation tank 1, the oil tank 2, the oil suction pipe 21, the oil pump 22, the oil-gas separator 3, the muffler 4, the first check valve 41, the air compressor 5, the condensation tank 6, the multi-stage cooling filter assembly 7, the coiled pipe 71, the exhaust pipe 72, the second check valve 73, the oil-gas filter 74, the oil return pipe 8, the double-pipe check control valve 9, the first pipe 91, the filter pipe 911, the second pipe 92, the connecting pipe 93, the opening and closing butterfly valve 94, the valve rod blade 941, the movable route groove 942, the compact filter cartridge 95, the raised filter plate 951, the middle hole 952, the threaded sealing plug 953, the handle 954, the raised slider 96, the bump 961, the hollowed hole 962, the side hole 963, the drainage through hole 964, the upper bucket disc 97, the lower edge 98, the flow valve 10, the water cooler 11, the water cooling pipe 12, the first closed cavity 13, and the second closed cavity 14.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-8, the invention provides a technical scheme of a three-time oil gas recovery processing device of an efficient energy-saving gas station: including installing box 1, locate the oil tank 2 of installing box 1 bottom and install in the oil pumping pipe 21 of installing box 1 one side and with the inside intercommunication of oil tank 2, oil pumping pipe 21 installs oil pump 22 and oil and gas separator 3, oil and gas separator 3 can separate gas and liquid, oil and gas separator 3 locates the oil pump 22 rear end, the oil and gas separator 3 exhaust end is connected with muffler 4, muffler 4 is connected with condensing box 6, condensate liquefaction is carried out to the recovered oil gas through condensing box 6, the oil-out in the bottom of condensing box 6 is connected with multistage cooling filter assembly 7, multistage cooling filter assembly 7 bottom is connected with oil return pipe 8, and through oil return pipe 8 and the inside intercommunication setting of oil tank 2.
In order to prevent oil gas from flowing backwards, the middle part of the air return pipe 4 is provided with the air compressor 5 and the first one-way valve 41, the first one-way valve 41 is arranged at the rear end of the air compressor 5, the air compressor 5 can accelerate the flowing speed of air, the certain temperature of the oil gas can be increased, and then the oil gas enters the condensing box 6 for condensation.
The multistage cooling filter assembly 7 comprises a coiled pipe 71, the coiled pipe 71 is distributed around in an S shape, so that oil gas can flow on the inner wall fully after passing through the coiled pipe 71, partial gas can be converted into liquid to flow downwards along the inner wall due to the condensation effect, the head end of the coiled pipe 71 is connected with the bottom of the condensation cavity of the condensation box 6, and the tail end flange of the coiled pipe 71 is connected with an exhaust pipe 72, so that the exhaust pipe 72 can be detached conveniently at the later stage.
In order to filter and purify the condensed gas, a plurality of bending parts on the upper side of the coiled pipe 71 are respectively communicated with the flange of the exhaust pipe 72, and the inner sides of all ports of the exhaust pipe 72 are respectively provided with the oil gas filters 74, so that the oil gas is filtered by the plurality of oil gas filters 74, the use is quicker and more effective, the second one-way valve 73 is arranged at the tail end of the exhaust pipe 72, the oil gas filters 74 are oily active carbon filter screens, and thus the condensed gas can be filtered and purified by the active carbon filter screens through the oil gas filters 74.
In order to facilitate connection of the oil return pipe 8 and the coiled pipe 71, a plurality of bending parts at the lower side of the coiled pipe 71 are respectively connected with oil inlet ports of the oil return pipe 8 in a flange mode, a double-pipe one-way control valve 9 and a flow valve 10 are respectively arranged at the tail end of the oil return pipe 8, the flow valve 10 is used for detecting the quantity of recovered gasoline, the double-pipe one-way control valve 9 is used for preventing oil gas in the oil tank 2 from entering the multistage cooling filter assembly 7, and the flow valve 10 is distributed at the rear end of the double-pipe one-way control valve 9.
The water cooler 11 is installed in the installation box body 1, the water cooling pipe 12 is connected with the water cooler 11, the water cooling pipe 12 is tightly attached to the surface of the coiled pipe 71, and therefore oil gas can be cooled under the cooling effect of the water cooling pipe 12 when the oil gas is in the coiled pipe 71, and the recovery of gasoline is facilitated.
As shown in fig. 4, fig. 5, fig. 6, in order to improve oil gas recovery effect and use, the structure of double-barrelled check valve 9 includes first body 91 and second body 92 that are linked together, the flange joint returns oil pipe 8 and is used for the oil feed on the first body 91, then retrieve the effect that oil got into and realize dual transport and oil strain in first body 91 and the second body 92, improved availability factor, the integrated intercommunication of first body 91 and second body 92 upside sets up connecting pipe 93, the inside fixed mounting of first body 91 upper side mouth of a river has filter tube 911, a plurality of filtration holes have been seted up to filter tube 911, can filter recovery oil initially, and this filter tube 911 and connecting pipe 93 are connected the intercommunication, most of more turbid oil can directly get into in the second body 92 through connecting pipe 93 carry, just the inside embedding of second body 92 top is equipped with the intensive section of thick filter cylinder 95 of dismantled and assembled, intensive section of thick bamboo 95 inside and 93 intercommunication setting, the more pure section of thick bamboo 95 that gets into the more turbid oil can get into in intensive section of thick filter cylinder 95 and filter, more pure section of thick bamboo that the quality is comparatively improved is obtained.
Among the above-mentioned technical scheme, preferably, the butterfly valve 94 of opening and close is all installed to second body 92 downside water outlet and first body 91 middle part, and the butterfly valve 94 of opening and close rotates and installs valve rod blade 941, and this valve rod blade 941 outward flange is laminated with opening and close butterfly valve 94 inner wall, can control the state of opening and close of first body 91 and second body 92 through opening and close butterfly valve 94 to cooperate intensive section of thick bamboo 95 and filter tube 911 to use, open and close butterfly valve 94 specifically has three kinds of service conditions:
first state of use: simultaneously, the on-off butterfly valves 94 of the first pipe body 91 and the second pipe body 92 are opened, so that the filter pipes 911 and the dense filter cartridges 95 in the first pipe body 91 and the second pipe body 92 simultaneously convey filtered oil.
Second use state: by closing the on-off butterfly valve 94 on the first pipe body 91, the gasoline liquid can be only conveyed through the second pipe body 92, the filtering effect and efficiency are relatively slow, but the turbid oil filtered by the filtering pipe 911 can still enter the dense filter cartridge 95 in the second pipe body 92 for filtering and precipitating.
Third use state: after the first pipe body 91 and the second pipe body 92 in the two states are used for a long time, the dense filter cylinder 95 needs to be cleaned, as shown in fig. 6, so after the equipment is closed, the opening and closing butterfly valve 94 of the first pipe body 91 and the second pipe body 92 needs to be closed at the same time, oil gas in the oil tank 2 is effectively prevented from escaping, and then the dense filter cylinder 95 is disassembled and assembled, so that the use is flexible and convenient.
Wherein, open and close butterfly valve 94 inner wall both sides are provided with the activity route recess 942 of rotatory hugging closely in valve rod blade 941 both sides, can closely laminate with activity route recess 942 inner wall when valve rod blade 941 rotates to close for both are connected more closely, also can paste between the two and establish the rubber pad and further improve the seal.
And, the inside check mechanism that all is provided with of first body 91 and second body 92, this check mechanism is including fixing at the interval respectively on last bucket dish 97 and the lower edge 98 of first body 91 and second body 92 inner wall, and the activity sets up the protruding slider 96 between last bucket dish 97 and lower edge 98, it takes on eight shapes to go up bucket dish 97 upside, and the middle part is the fretwork, protruding slider 96 and last bucket dish 97 bottom surface can closely laminate, protruding slider 96 outside respectively with first body 91 and the adaptation of second body 92 inner wall, protruding slider 96 bottom edge can block to establish on lower edge 98, protruding slider 96 can be according to the corresponding upper and lower sliding displacement of the size of the interior hydraulic pressure of first body 91 and second body 92 or the interior hydraulic pressure of oil tank 2.
In the above technical solution, the protruding slider 96 includes a protruding block 961, an outer curved surface of the protruding block 961 is slidably attached to inner walls of the first tube 91 and the second tube 92, a protruding portion is disposed on an upper side of the protruding block 961, a hollow middle hole 952 is formed in a middle portion of the protruding portion, a plurality of side holes 963 communicated with the middle hole 952 are formed around an outer periphery of a lower side of the protruding portion, the protruding portion of the protruding block 961 is tightly penetrated by a middle portion of the upper bucket disc 97, and each side hole 963 of the protruding portion is transversely disposed toward the middle portion of the upper bucket disc 97; wherein, a plurality of drain through holes 964 are distributed around the lower side of the bump 961, the drain through holes 964 vertically face the bottom surface of the upper bucket disc 97, when the oil pressure flowing downwards from the first pipe body 91 and the second pipe body 92 is greater than the oil pressure in the oil tank 2, the oil pressure pushes the bump 961 downwards to displace, so that the side holes 963 on the side surface of the protruding part are lower than the upper bucket disc 97, the recovered oil can enter the middle hole 952, then enter the lower part of the upper bucket disc 97 from the side holes 963 through the middle hole 952, and flow downwards into the oil tank 2 through the plurality of drain through holes 964 on the bump 961; conversely, when the oil gas pressure in the oil tank 2 is greater than the oil pressure flowing under the first pipe 91 and the second pipe 92, the bump 961 pushes and displaces upwards under the action of the oil gas to be tightly attached to the bottom surface of the upper bucket disc 97, so that the closing is realized, and the oil backflow is prevented.
In addition, the side surface of the compact filter cylinder 95 is provided with the through hole 950, the through hole 950 is directly communicated with the connecting pipe 93, so that the turbid recovered oil enters the compact filter cylinder 95, and as the compact filter cylinder 95 is internally overlapped with a plurality of adaptive convex filter plates 951, the convex filter plates 951 can be overlapped to form multi-layer filtration according to the use requirement, the filtration effect on the oil is further improved, the convex filter plates 951 are arranged in a shape with middle and high outer parts, the oil flows to two sides preferentially in the conveying process, the filtered impurities are concentrated on the lower periphery and the inner wall of the compact filter cylinder 95, the layered filtration effect is good, the later filtration and cleaning are convenient, and meanwhile, each compact filter cylinder 95 is provided with a middle hole 952, so that part of the oil can quickly flow downwards to each layer of filtration, and the blockage of the compact filter cylinder 95 is avoided after long-term filtration and use;
moreover, as shown in fig. 7, the top of the dense filter cartridge 95 is connected with a threaded sealing plug 953 through screw locking, threads are formed on the outer side of the threaded sealing plug 953 and screwed with the threads of the top pipe orifice of the second pipe body 92, and the connection is more stable through secondary locking and reinforcement on the upper side through screws, so that the dense filter cartridge 95 can be disassembled and assembled along with the screw sealing plug 953 in a screwed manner, the dense filter cartridge 95 is conveniently disassembled from the threaded sealing plug 953, and the inside of the dense filter cartridge 95 is also conveniently cleaned or replaced by a convex filter plate 951, so that the dense filter cartridge is simple and convenient to use.
A handle 954 is also fixed on the top of the threaded sealing plug 953, which provides a stress point for rotating the threaded sealing plug 953, and is convenient to use.
As shown in fig. 3, in order to improve the tightness of the device, the inside oil gas and cold air are not easy to leak, the first closed cavity 13 and the second closed cavity 14 are provided in the installation box 1, the first closed cavity 13 is provided on the upper side of the second closed cavity 14, the coiled pipe 71, the water cooler 11 and the water cooling pipe 12 are all provided on the inner side of the first closed cavity 13, the oil tank 2 is provided in the second closed cavity 14, and the exhaust end of the exhaust pipe 72 is arranged on the outer side of the installation box 1 in a penetrating manner, and of course, openable closed doors can be installed on the outer sides of the first closed cavity 13 and the second closed cavity 14 in order to facilitate the later maintenance and use.
For example: the oil pump 22 extracts the gasoline from the oil tank 2 by the oil pumping pipe 21, the oil gas of the gasoline is separated by the oil-gas separator 3 and enters the air return pipe 4 for recovery, and the gasoline rapidly enters the condensing box 6 under the compression of the air compressor 5 and is condensed in the condensing box 6, the condensed oil gas is converted into gasoline to directly enter the multistage cooling filter assembly 7, so that the gasoline enters the coiled pipe 71 for transportation, the oil gas is filtered by the oil gas filter 74 arranged at the bending part at the upper side of the coiled pipe 71 during transportation, and the filtered gas is discharged from the second one-way valve 73, so that the arrangement can better purify the discharged gas and has good recovery effect on the gasoline; the coiled pipe 71 is used for conveying gasoline, the water cooler 11 works to enable the water cooling pipe 12 to cool the coiled pipe 71, cooling and condensation of oil gas are facilitated, so that the gasoline can flow from the oil return pipe 8 connected with the bent part at the lower side of the coiled pipe 71 and flow into the double-pipe one-way control valve 9 arranged on the oil return pipe 8, the recovered gasoline liquid is filtered, conveyed and controlled through the technical scheme of the double-pipe one-way control valve 9, the effect of preventing gasoline backflow is also achieved, the effect and quality of gasoline recovery are improved, meanwhile, the later maintenance and use of the double-pipe one-way control valve 9 are facilitated, the oil is recovered and conveyed into the oil tank 2 again, and the flow valve 10 can be used for calculating the gasoline recovered in real time during recovery.
The three-time oil gas recovery processing device of the high-efficiency energy-saving gas station mainly improves the structure, and functions, components and structures which are not mentioned can be implemented by adopting components and structures which can realize corresponding functions in the prior art.
The present invention has been described in detail by way of specific examples, but these should not be construed as limiting the invention. Many variations and modifications may be made by one skilled in the art without departing from the principles of the invention, which is also considered to be within the scope of the invention.