CN111039248A - Oil gas recovery nozzle - Google Patents
Oil gas recovery nozzle Download PDFInfo
- Publication number
- CN111039248A CN111039248A CN201911302952.8A CN201911302952A CN111039248A CN 111039248 A CN111039248 A CN 111039248A CN 201911302952 A CN201911302952 A CN 201911302952A CN 111039248 A CN111039248 A CN 111039248A
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- oil
- valve
- gas
- gas recovery
- cavity
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- 238000011084 recovery Methods 0.000 title claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
- B67D7/54—Filling nozzles with means for preventing escape of liquid or vapour or for recovering escaped liquid or vapour
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to the technical field of refueling equipment and discloses an oil gas recovery refueling gun which comprises a gun body and a gun frame arranged at the bottom of the gun body, wherein a cavity for oil products to pass through is formed in the gun body, an oil gas separation valve assembly and a mandril valve core are sequentially arranged in the cavity, and a self-sealing valve assembly for preventing the oil products from overflowing is arranged at the upper end of the mandril valve core; an oil outlet pipe assembly is arranged at the oil gas outlet end of the cavity, and the oil outlet pipe assembly comprises an oil outlet pipe and a vent pipe; a transfer sleeve connected with the oil outlet pipe is arranged in the cavity, a valve seat is arranged in the transfer sleeve, and an auxiliary valve core is arranged on the valve seat; the switching sleeve is connected with an oil gas recovery pipe for recovering oil gas, and the other end of the oil gas recovery pipe is connected with the oil-gas separation valve component. The oil gas recovery oil gun has the advantages of light gun body, small oil flow resistance and high oil flow rate, and the oil gas recovery pipe improves the oil gas recovery efficiency of the oil gun during working, reduces the leakage probability of the oil gun and improves the atmospheric pollution.
Description
Technical Field
The invention relates to the technical field of refueling equipment, in particular to an oil gas recovery refueling gun.
Background
At present, most filling stations all adopt ordinary self-sealing oil guns, and this kind of self-sealing oil guns has the function that can self-closing the oil circuit when the car oil tank is full. The structure of the automatic control oil gun mainly comprises a gun body, a main valve, a mandril, a switch membrane, a self-sealing rod, a self-control rod, an auxiliary valve core, an oil gun nozzle and the like. Three steel balls are arranged in three holes at the upper end of the automatic control rod, and the auxiliary valve seat is provided with small holes along the circumferential direction and is communicated with the switch membrane upper cavity through inclined holes on the gun body; the switching sleeve is provided with an inclined hole which is communicated with the outside through an air inlet and an air inlet nozzle, the inclined hole is communicated with the switch membrane upper cavity through the inclined hole on the gun body, and the switch membrane lower cavity is communicated with the outside through a gap between the gun body and the automatic control rod.
When oil is supplied, the switch handle is lifted, the three steel balls clamp the automatic control rod by the inclined plane on the gun body, the main valve is opened, pressure oil enters the cavity between the main valve and the auxiliary valve in the gun body, overcomes the spring force of the auxiliary valve, pushes the auxiliary valve open and is discharged through the nozzle of the oil gun. When the oil passes through the auxiliary valve, the pressure of the upper cavity of the switch membrane is reduced due to the suction effect of the liquid flow, but the pressure of the upper cavity of the switch membrane is still equal to that of the lower cavity because the upper cavity of the switch membrane is communicated with the outside through the inclined hole of the adapter sleeve, the air inlet pipe, the front end of the oil gun nozzle and the air inlet nozzle, and the outside air is continuously supplemented to the upper cavity of the switch membrane, the switch membrane is in a balance position, when the oil submerges the air inlet nozzle, the upper cavity of the switch membrane is isolated from the outside, the lower cavity of the switch membrane still keeps an atmospheric pressure, so that a pressure difference is formed between the upper cavity and the lower cavity of the switch membrane, when the pressure difference is increased to a certain value, the switch membrane and the self-sealing rod fixed with the switch membrane overcome the spring force of the upper cavity of the switch membrane to move upwards, the steel balls are extruded into the self-control rod, the self-control rod moves downwards under the action of the pulling force of the switch handle, the main valve ejector rod moves downwards due to the downward movement of the fulcrum of the switch handle, and the main valve closes to supply oil and stops supplying oil.
However, when the self-sealing oil gun is used for oiling, oil gas generated in an automobile oil tank can be emitted into the atmosphere, so that environmental pollution and potential safety hazards are caused.
Disclosure of Invention
The invention aims to provide an oil gas recovery oil gun to solve the problems that when the oil gun in the prior art is used for oiling, oil gas generated in an automobile oil tank can be emitted into the atmosphere to cause environmental pollution and potential safety hazards.
In order to achieve the above purpose, the basic scheme of the invention is as follows: an oil gas recovery oil gun comprises a gun body and a gun frame arranged at the bottom of the gun body, wherein a cavity for oil to pass through is formed in the gun body, an oil inlet and an oil gas outlet are formed in two ends of the cavity respectively, a control assembly for controlling oil output is arranged on the gun frame, an oil gas separation valve assembly and a mandril valve core are sequentially arranged in the cavity along the oil inlet direction, the mandril valve core is transversely arranged in the cavity, one end of the mandril valve core is connected to the oil gas separation valve assembly, and a self-sealing valve assembly for preventing the oil from overflowing is arranged at the upper end of the mandril valve core; an oil outlet pipe assembly is arranged at the oil gas outlet end of the cavity, the oil outlet pipe assembly comprises an oil outlet pipe and a vent pipe, the vent pipe is arranged in the oil outlet pipe, and a vacuum suction hole is formed in the position, close to the oil outlet of the oil outlet pipe, of the vent pipe; a switching sleeve connected with the oil outlet pipe is arranged in the cavity, a valve seat is arranged in the switching sleeve, and an auxiliary valve core is arranged on the valve seat; the switching sleeve is connected with an oil gas recovery pipe for recovering oil gas, and the other end of the oil gas recovery pipe is connected with the oil-gas separation valve component.
Further, the oil-gas separation valve component comprises an oil-gas separation valve body, an oil-gas separation seat is arranged at one end of the oil-gas separation valve body, a sealing seat is arranged at the other end of the oil-gas separation valve body, a mandril valve core is installed on the sealing seat, a push rod is connected to the middle of the oil-gas separation seat in a sliding mode, a first spring is sleeved outside the push rod, and two ends of the first spring are connected to the oil-gas separation seat and the sealing seat respectively.
Further, from valve module of sealing including sealing the valve body, from the inside fixed mounting of valve there is the position sleeve, the pot head is equipped with the location axle under the position sleeve, and the location axle is lower extreme open-ended quill, location axle lower extreme middle part threaded connection set screw.
Furthermore, the lower part of the positioning screw is in threaded connection with a fixedly connected pin base, two rolling pins are installed in the pin base, and the ejector rod valve core is provided with a groove capable of enabling the rolling pins to fall into the valve core groove.
Furthermore, a second spring is arranged in the self-sealing valve body, the upper end of the second spring is connected with the positioning sleeve, and the lower end of the second spring is fixedly connected with a diaphragm.
Further, the control assembly comprises a trigger arranged on the gun rack, and a catch is arranged at the tail end of the trigger.
Furthermore, a filter screen is installed at one end, close to the oil inlet, of the oil-gas separation valve body.
Furthermore, the oil outlet pipe is provided with a gas collecting hood for recovering oil gas into the cavity channel.
Compared with the prior art, the scheme has the beneficial effects that:
1. the cavity channels for oil to pass through in the gun body are linearly arranged, so that the resistance of the oil to pass through in the cavity channels can be reduced, and the oiling efficiency is improved.
2. The self-sealing valve component is arranged in the gun body, so that oil products can be prevented from overflowing.
3. When the oil is filled, oil gas generated in the automobile oil tank enters the gun body through the gas collecting hood and is recovered to the underground oil tank through the gas recovery pipe and the oil-gas separation valve assembly, so that the oil gas is recovered, and the atmospheric pollution can be improved.
Drawings
FIG. 1 is a schematic structural view of an oil and gas recovery refueling gun according to the present invention;
figure 2 is a schematic structural view of the self-sealing valve assembly of the present invention.
Reference numerals in the drawings of the specification include: the gun comprises a gun body 1, a gun frame 2, a trigger 21, a retaining buckle 22, a mandril valve core 3, a valve core groove 31, a push rod 4, an oil-gas separation seat 41, a sealing seat 42, a first spring 43, a filter screen 44, a valve seat 5, an auxiliary valve core 51, an oil outlet pipe 6, a vent pipe 61, a vacuum air suction hole 62, an oil-gas recovery pipe 63, a gas collecting hood 64, a self-sealing valve assembly 7, a self-sealing valve body 71, a sealing ring 72, a positioning sleeve 8, a positioning shaft 81, a positioning screw 82, a second spring 83, a membrane 84, a pin seat 9 and a rolling pin 91.
Detailed Description
The invention will be described in further detail by means of specific embodiments with reference to the accompanying drawings:
example (b):
the oil gas recovery oil gun comprises a gun body 1 and a gun frame 2 arranged at the bottom of the gun body 1, wherein a cavity channel for oil to pass through is formed in the gun body 1, an oil inlet and an oil gas outlet are respectively formed in two ends of the cavity channel, a filter screen 44 for filtering the oil is arranged at the oil inlet end, a control assembly for controlling the oil output is arranged on the gun frame 2, the control assembly comprises a trigger 21 arranged on the gun frame 2, and a stop buckle 22 is arranged at the tail end of the trigger 21.
As shown in fig. 1, be equipped with oil-gas separation valve subassembly and ejector pin case 3 along the oil feed direction in proper order in the chamber way, oil-gas separation valve subassembly includes the oil-gas separation valve body, and the one end of oil-gas separation valve body is equipped with oil-gas separation seat 41, and the other end is equipped with seal receptacle 42, and the middle part sliding connection of oil-gas separation seat 41 has push rod 4, and the 4 overcoat of push rod is equipped with first spring 43, and the both ends of first spring 43 are connected respectively on oil-gas separation seat 41 and seal receptacle 42.
As shown in fig. 1 and 2, the mandril valve core 3 is transversely arranged in the cavity, one end of the mandril valve core 3 is connected to the seal seat 42, and a self-sealing valve component 7 for preventing oil products from overflowing is arranged above the mandril valve core 3; the self-sealing valve assembly 7 comprises a self-sealing valve body 71, a sealing ring 72 is sleeved on the upper portion and the lower portion of the self-sealing valve body 71, a locating sleeve 8 is fixedly installed inside the self-sealing valve, a locating shaft 81 is sleeved on the lower end of the locating sleeve 8, the locating shaft 81 is a sleeve shaft with an opening at the lower end, and the middle of the lower end of the locating shaft 81 is in threaded connection with a locating screw 82. The lower part of the positioning screw 82 is in threaded connection with a fixedly connected pin seat 9, two rolling pins 91 are installed in the pin seat 9, and the ejector pin valve core 3 is provided with a valve core groove 31 which can enable the rolling pins 91 to fall into. A second spring 83 is arranged in the self-sealing valve body 71, the upper end of the second spring 83 is connected with the positioning sleeve 8, and the lower end of the second spring 83 is fixedly connected with a diaphragm 84.
As shown in fig. 1, an oil gas outlet end of the cavity is provided with an oil outlet pipe 6 assembly, the oil outlet pipe 6 assembly comprises an oil outlet pipe 6 and a vent pipe 61, the oil outlet pipe 6 is provided with a gas collecting hood 64 for recovering oil gas into the cavity, the vent pipe 61 is arranged in the oil outlet pipe 6, and the vent pipe 61 is provided with a vacuum suction hole 62 near an oil outlet of the oil outlet pipe 6; a transfer sleeve connected with the oil outlet pipe 6 is arranged in the cavity, a valve seat 5 is arranged in the transfer sleeve, and an auxiliary valve core 51 is arranged on the valve seat 5; the adapter sleeve is connected with an oil gas recovery pipe 63 for recovering oil gas, and the other end of the oil gas recovery pipe 63 is connected with the oil-gas separation valve assembly.
The specific implementation mode of the scheme is as follows:
when the automatic oil filling gun is in operation, an operator holds the gun rack 2 by hand, inserts the oil outlet pipe 6 into an automobile oil tank, pulls the trigger 21, the trigger 21 pushes the ejector rod valve core 3, the valve core groove 31 on the ejector rod valve core 3 clamps the two rolling pins 91, the ejector rod valve core 3 moves, and a cavity channel through which oil supplies pass in the gun body 1 is communicated to realize oil filling. In the oiling process, oil is filtered by the filter screen 44, then is subjected to oil-gas separation by the oil-gas separation seat 41, and finally enters the oil tank through the oil outlet pipe 6.
When the oil in the oil tank passes through the vacuum suction hole 62 of the vent pipe 61, negative pressure is generated above the diaphragm 84 due to the siphoning effect, the diaphragm 84 moves upwards under the action of the pressure and drives the rolling pin 91 to be separated from the valve core groove 31, the oil gun is not fixed, the auxiliary valve core 51 is sealed on the valve seat 5, and the oil gun is closed.
In the oiling process, under the action of a vacuum pump at the oil inlet end of an oiling gun, oil gas generated in an automobile oil tank enters the gun body 1 through the gas collecting hood 64 and is recovered to an underground oil tank through the gas recovery pipe and the oil-gas separation valve assembly, so that the oil gas is recovered, and the atmospheric pollution can be improved.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. The utility model provides an oil gas recovery nozzle, includes the rifle body (1) and installs gun rack (2) in rifle body (1) bottom, form the chamber way that makes the oil pass through in the rifle body (1), the both ends that the chamber was said are oil inlet and oil gas export respectively, install the control assembly who is used for controlling oil output on gun rack (2), its characterized in that: an oil-gas separation valve component and a mandril valve core (3) are sequentially arranged in the cavity along the oil inlet direction, the mandril valve core (3) is transversely arranged in the cavity, one end of the mandril valve core (3) is connected to the oil-gas separation valve component, and a self-sealing valve component (7) for preventing oil products from overflowing is arranged at the upper end of the mandril valve core (3); an oil outlet pipe (6) assembly is arranged at the oil gas outlet end of the cavity, the oil outlet pipe (6) assembly comprises an oil outlet pipe (6) and a vent pipe (61), the vent pipe (61) is arranged in the oil outlet pipe (6), and a vacuum suction hole (62) is formed in the position, close to the oil outlet of the oil outlet pipe (6), of the vent pipe (61); a switching sleeve connected with the oil outlet pipe (6) is arranged in the cavity, a valve seat (5) is arranged in the switching sleeve, and an auxiliary valve core (51) is arranged on the valve seat (5); the adapter sleeve is connected with an oil gas recovery pipe (63) for recovering oil gas, and the other end of the oil gas recovery pipe (63) is connected with the oil-gas separation valve component.
2. The oil and gas recovery nozzle of claim 1, wherein: the oil-gas separation valve component comprises an oil-gas separation valve body, wherein an oil-gas separation seat (41) is arranged at one end of the oil-gas separation valve body, a sealing seat (42) is arranged at the other end of the oil-gas separation valve body, a mandril valve core (3) is installed on the sealing seat (42), a push rod (4) is connected to the middle of the oil-gas separation seat (41) in a sliding mode, a first spring (43) is arranged on the outer sleeve of the push rod (4), and the two ends of the first spring (43) are connected to the oil-gas separation seat (41) and.
3. The oil and gas recovery nozzle of claim 1, wherein: valve subassembly (7) is including proclaiming oneself valve body (71), proclaiming oneself the inside fixed mounting of valve and having position sleeve (8), the pot head is equipped with location axle (81) under position sleeve (8), and location axle (81) are lower extreme open-ended quill, location axle (81) lower extreme middle part threaded connection set screw (82).
4. The oil and gas recovery nozzle of claim 3, wherein: the lower part of the positioning screw (82) is in threaded connection with a pin seat (9) fixedly connected with, two rolling pins (91) are installed in the pin seat (9), and the ejector pin valve core (3) is provided with a valve core groove (31) capable of enabling the rolling pins (91) to fall into.
5. The oil and gas recovery nozzle of claim 4, wherein: a second spring (83) is arranged in the self-sealing valve body (71), the upper end of the second spring (83) is connected with the positioning sleeve (8), and the lower end of the second spring (83) is fixedly connected with a diaphragm (84).
6. The oil and gas recovery nozzle of claim 1, wherein: the control assembly comprises a trigger (21) arranged on the gun rack (2), and a stop buckle (22) is arranged at the tail end of the trigger (21).
7. The oil and gas recovery nozzle of claim 1, wherein: and a filter screen (44) is arranged at one end of the oil-gas separation valve body close to the oil inlet.
8. The oil and gas recovery nozzle of claim 1, wherein: and the oil outlet pipe (6) is provided with a gas collecting hood (64) for recovering oil gas into the cavity channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911302952.8A CN111039248A (en) | 2019-12-17 | 2019-12-17 | Oil gas recovery nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911302952.8A CN111039248A (en) | 2019-12-17 | 2019-12-17 | Oil gas recovery nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111039248A true CN111039248A (en) | 2020-04-21 |
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ID=70237068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911302952.8A Pending CN111039248A (en) | 2019-12-17 | 2019-12-17 | Oil gas recovery nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111039248A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113460944A (en) * | 2021-07-13 | 2021-10-01 | 浙江海博石油设备有限公司 | Oil gas recovery nozzle |
| CN113816328A (en) * | 2020-06-18 | 2021-12-21 | 中国石油化工股份有限公司 | Oil gun and oiling machine considering both vehicle-mounted oil gas recovery system and secondary oil gas recovery system of gas station |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060011256A1 (en) * | 2004-06-30 | 2006-01-19 | Liu Ming H | Accumulated oil separator for oil-gas recovery system |
| CN201686480U (en) * | 2010-05-20 | 2010-12-29 | 中国人民解放军总后勤部油料研究所 | Oil gas recovery self-sealing compressor gun |
| CN202609918U (en) * | 2011-10-19 | 2012-12-19 | 中国石油化工股份有限公司 | Oil gas recovery oil gun |
| CN202849046U (en) * | 2012-10-17 | 2013-04-03 | 中国石油化工股份有限公司 | Energy-saving oil vapor recovery oil gun |
| CN203284197U (en) * | 2013-01-09 | 2013-11-13 | 郑州奥德赛科技有限公司 | Novel self-sealing oil gun with emergent disengaging structure |
| CN203402917U (en) * | 2013-08-16 | 2014-01-22 | 优必得石油设备(苏州)有限公司 | Gun tube of oil vapor recovery oil-adding gun |
| CN103663335A (en) * | 2013-11-25 | 2014-03-26 | 浙江春晖智能控制股份有限公司 | Self-sealing oil gun for oil gas recovery |
| CN211770278U (en) * | 2019-12-17 | 2020-10-27 | 欧佩特环保科技(南京)有限公司 | Oil gas recovery nozzle |
-
2019
- 2019-12-17 CN CN201911302952.8A patent/CN111039248A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060011256A1 (en) * | 2004-06-30 | 2006-01-19 | Liu Ming H | Accumulated oil separator for oil-gas recovery system |
| CN201686480U (en) * | 2010-05-20 | 2010-12-29 | 中国人民解放军总后勤部油料研究所 | Oil gas recovery self-sealing compressor gun |
| CN202609918U (en) * | 2011-10-19 | 2012-12-19 | 中国石油化工股份有限公司 | Oil gas recovery oil gun |
| CN202849046U (en) * | 2012-10-17 | 2013-04-03 | 中国石油化工股份有限公司 | Energy-saving oil vapor recovery oil gun |
| CN203284197U (en) * | 2013-01-09 | 2013-11-13 | 郑州奥德赛科技有限公司 | Novel self-sealing oil gun with emergent disengaging structure |
| CN203402917U (en) * | 2013-08-16 | 2014-01-22 | 优必得石油设备(苏州)有限公司 | Gun tube of oil vapor recovery oil-adding gun |
| CN103663335A (en) * | 2013-11-25 | 2014-03-26 | 浙江春晖智能控制股份有限公司 | Self-sealing oil gun for oil gas recovery |
| CN211770278U (en) * | 2019-12-17 | 2020-10-27 | 欧佩特环保科技(南京)有限公司 | Oil gas recovery nozzle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816328A (en) * | 2020-06-18 | 2021-12-21 | 中国石油化工股份有限公司 | Oil gun and oiling machine considering both vehicle-mounted oil gas recovery system and secondary oil gas recovery system of gas station |
| CN113460944A (en) * | 2021-07-13 | 2021-10-01 | 浙江海博石油设备有限公司 | Oil gas recovery nozzle |
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