CN215435993U

CN215435993U - Oil filling pipe assembly structure capable of reducing oil vapor emission

Info

Publication number: CN215435993U
Application number: CN202121447666.3U
Authority: CN
Inventors: 刘隆娇; 李兆燕; 咸奎喜; 李角胜
Original assignee: Jiangxi Changhe Automobile Co Ltd
Current assignee: Jiangxi Changhe Automobile Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-07
Anticipated expiration: 2031-06-29

Abstract

An oil filling pipe assembly structure capable of reducing oil vapor emission comprises an oil filling pipe body and an air return pipe, wherein the oil filling pipe body comprises a first straight pipe section and a second straight pipe section, the elbow section, flared tube and eccentric pipe, first straight tube section and second straight tube section are connected respectively in the both ends of elbow section, the other end of first straight tube section is connected with an eccentric pipe, flared tube connects in the other end of eccentric pipe, the both ends cross-section of eccentric pipe is eccentric circle structure, the muffler is connected on flared tube's side, muffler and flared tube intercommunication, be connected with an oiling cover on flared tube's the inner wall, the oiling cover is hollow cylindrical cavity structure, the bottom surface of oiling cover is eccentric structure with the top of eccentric pipe, a spacing groove has been seted up at flared tube's top, the mounting hole on the automobile body can be embedded into to the spacing groove, flared tube's the other end round is equipped with sealed turn-ups, sealed turn-ups seal weld is on the automobile body. The oil tank has reasonable structural design and good sealing property, and can effectively reduce the emission of oil gas in the oil tank.

Description

Oil filling pipe assembly structure capable of reducing oil vapor emission

Technical Field

The utility model relates to the technical field of automobiles, in particular to an oil filling pipe assembly structure capable of reducing oil vapor emission.

Background

The oil tank of car is used for saving the fuel, and in order to make things convenient for the sealed of oil tank, the fuel tank mouth of oil tank all can install dedicated oil filler pipe assembly. The existing oil filling pipe assembly is poor in sealing performance generally, and fuel steam in an oil tank is easy to leak through the oil filling pipe assembly, so that the oil steam discharge amount exceeds the standard. Meanwhile, the pipeline of each section of the existing oil filling pipe is generally designed concentrically, so that the oil vapor emission is over standard when oil is filled, and the environment is polluted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, provides a fuel filling pipe assembly structure capable of reducing the discharge of fuel vapor, and solves the problems that the fuel filling pipe assembly in the prior art is poor in general tightness, the fuel vapor in a fuel tank is easy to leak through the fuel filling pipe assembly, the discharge amount of the fuel vapor exceeds the standard, and the sectional pipelines of the conventional fuel filling pipe are generally concentrically designed, so that the discharge amount of the fuel vapor exceeds the standard when fuel is filled, and the environment is polluted.

In order to achieve the purpose, the utility model adopts the technical scheme that:

an oil filling pipe assembly structure capable of reducing oil vapor emission comprises an oil filling pipe body and an air return pipe, wherein the oil filling pipe body comprises a first straight pipe section, a second straight pipe section, a bent pipe section, a flared pipe and an eccentric pipe, the first straight pipe section and the second straight pipe section are respectively connected to two ends of the bent pipe section, the eccentric pipe is connected to the other end of the first straight pipe section, the flared pipe is connected to the other end of the eccentric pipe, sections of two ends of the eccentric pipe are of eccentric circular structures, the air return pipe is connected to the side surface of the flared pipe, the air return pipe is communicated with the flared pipe, an oil filling sleeve is connected to the inner wall of the flared pipe, the oil filling sleeve is of a hollow cylindrical cavity structure, the bottom surface of the oil filling sleeve and the top of the eccentric pipe are of eccentric structures, a limit groove is formed in the top of the flared pipe, and can be embedded into a mounting hole in a vehicle body, the other end of the flaring pipe is provided with a circle of sealing flanging, and the sealing flanging can be sealed and welded on the automobile body.

Further, the bottom of the second straight pipe section is fixedly provided with an installation support, and the installation support can be used for installing a liquid level sensor.

Furthermore, the bent pipe section is of an arc-shaped structure, and the arc radius of the inner side of the bent pipe section is 50-100 mm.

Furthermore, the bottom of the second straight pipe section extends into the bottom of the oil tank, the top of the inner cavity of the flared pipe is provided with a plurality of circles of internal threads, and the internal threads can be in threaded connection with the oil filler cover.

The fuel tank has reasonable structural design and good sealing performance, can effectively prevent the fuel steam evaporated in the fuel tank from leaking, and reduces the emission of the fuel steam. The utility model can be welded on the outer side surface of the oil tank through the sealing flanging at one side of the flared tube in a sealing way, and the internal thread on the flared tube can realize the threaded connection between the oil filling tube and the oil filling port cover, thereby greatly improving the sealing performance of the oil filling tube assembly.

Drawings

FIG. 1 is a schematic diagram of the apparatus of the present invention;

FIG. 2 is a schematic view showing the internal structure of the flared tube in the present invention;

in the figure: 1. the oil filling pipe comprises an oil filling pipe body, 11, a first straight pipe section, 12, a second straight pipe section, 13, a bent pipe section, 14, a flared pipe, 15, an eccentric pipe, 2, an air return pipe, 3, an oil filling sleeve, 4, a limiting groove, 5, a sealing flanging, 6, a mounting bracket, 7 and internal threads.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, an oil filling pipe assembly structure capable of reducing oil vapor emission includes an oil filling pipe body 1 and an air return pipe 2, wherein the oil filling pipe body 1 includes a first straight pipe section 11, a second straight pipe section 12, a bent pipe section 13, an expanding pipe 14 and an eccentric pipe 15, the first straight pipe section 11 and the second straight pipe section 12 are respectively connected to two ends of the bent pipe section 13, the eccentric pipe 15 is connected to the other end of the first straight pipe section 11, the expanding pipe 14 is connected to the other end of the eccentric pipe 15, cross sections of two ends of the eccentric pipe 15 are eccentric circular structures, the air return pipe 2 is connected to a side surface of the expanding pipe 14, the air return pipe 2 is communicated with the expanding pipe 14, an oil filling sleeve 3 is connected to an inner wall of the expanding pipe 14, the oil filling sleeve 3 is a hollow cylindrical cavity structure, a bottom surface of the oil filling sleeve 3 and a top of the eccentric pipe 15 are eccentric structures, the top of the flared tube 14 is provided with a limiting groove 4, the limiting groove 4 can be embedded into a mounting hole on a vehicle body, the other end of the flared tube 14 is provided with a circle of sealing flanging 5, and the sealing flanging 5 can be welded on the vehicle body in a sealing manner; the bottom of the second straight pipe section 12 is fixedly provided with an installation bracket 6, and the installation bracket 6 can be used for installing a liquid level sensor; the bent pipe section 13 is of an arc-shaped structure, and the arc radius of the inner side of the bent pipe section 13 is 50-100 mm; the bottom of the second straight pipe section 12 extends into the bottom of the oil tank, the top of the inner cavity of the flared pipe 14 is provided with a plurality of circles of internal threads 7, and the internal threads 7 can be in threaded connection with the oil filler cover.

The fuel tank has reasonable structural design and good sealing performance, can effectively prevent the fuel steam evaporated in the fuel tank from leaking, and reduces the emission of the fuel steam. The utility model can be welded on the outer side surface of the oil tank in a sealing way through the sealing flanging 5 at one side of the flared pipe 14, the internal thread 7 on the flared pipe 14 can realize the threaded connection between the oil filling pipe and the oil filling port cover, the sealing performance of the oil filling pipe assembly is greatly improved, meanwhile, the eccentric arrangement is realized between the first straight pipe section 11 and the flared pipe 14 through the eccentric pipe 15, and the eccentric design is also adopted between the bottom surface of the oil filling sleeve 3 and the top surface of the eccentric pipe 15, so that the obstacle of oil vapor overflowing through the oil filling pipe body 1 is increased, the oil vapor evaporated in the oil filling process can be effectively prevented from directly overflowing through the oil filling pipe body 1, the emission of the oil vapor in the oil tank is further reduced, and the environmental pollution is reduced.

The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil filling pipe assembly structure capable of reducing oil vapor discharge comprises an oil filling pipe body (1) and an air return pipe (2), and is characterized in that the oil filling pipe body (1) comprises a first straight pipe section (11), a second straight pipe section (12), a bent pipe section (13), an opening expanding pipe (14) and an eccentric pipe (15), the first straight pipe section (11) and the second straight pipe section (12) are respectively connected to two ends of the bent pipe section (13), the eccentric pipe (15) is connected to the other end of the first straight pipe section (11), the opening expanding pipe (14) is connected to the other end of the eccentric pipe (15), sections of two ends of the eccentric pipe (15) are of an eccentric circular structure, the air return pipe (2) is connected to the side surface of the opening expanding pipe (14), the air return pipe (2) is communicated with the opening expanding pipe (14), an oil adding sleeve (3) is connected to the inner wall of the opening expanding pipe (14), add oil jacket (3) and be hollow cylindrical cavity structures, add the bottom surface of oil jacket (3) with the top of eccentric pipe (15) is eccentric structure, a spacing groove (4) have been seted up at the top of flared tube (14), in spacing groove (4) can imbed the mounting hole on the automobile body, the other end of flared tube (14) is equipped with the sealed turn-ups of round (5), sealed turn-ups (5) can seal and weld on the automobile body.

2. The structure of an oil filling pipe assembly capable of reducing the discharge of oil vapor as claimed in claim 1, wherein a mounting bracket (6) is fixedly arranged at the bottom of the second straight pipe section (12), and the mounting bracket (6) can be used for mounting a liquid level sensor.

3. The structure of a fuel filler pipe assembly for reducing the emission of fuel vapor as set forth in claim 1, wherein said elbow section (13) has a circular arc shape, and the radius of the circular arc of the inside of said elbow section (13) is 50mm to 100 mm.

4. The structure of an oil filler pipe assembly capable of reducing the discharge of oil vapor as claimed in claim 1, wherein the bottom of the second straight pipe section (12) extends into the bottom of the oil tank, the top of the inner cavity of the flared pipe (14) is provided with a plurality of circles of internal threads (7), and the internal threads (7) can be in threaded connection with the oil filler cap.