CN216407009U

CN216407009U - Fuel pump assembly with noise reduction function

Info

Publication number: CN216407009U
Application number: CN202123323334.7U
Authority: CN
Inventors: 蔡良宝; 蔡良丰; 杨奔
Original assignee: Zhejiang Shuangliang Automobile Parts Co ltd
Current assignee: Zhejiang Shuangliang Automobile Parts Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-04-29
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to the technical field of fuel pumps, and provides a fuel pump assembly with a noise reduction function in order to solve the problem of high noise of the fuel pump assembly in the prior art in the use process, wherein the fuel pump assembly comprises a shell, a mounting rack and a flange cover, the shell is connected with the flange cover through the mounting rack, a pump body is arranged in the shell, the outlet end of the pump body is connected with a fuel nozzle through a fuel outlet pipe, the fuel nozzle is communicated with a pressure release valve, and the fuel pump assembly comprises: the fuel oil draining device further comprises a blocking part and a draining part used for leading the fuel oil drained by the pressure relief valve to the blocking part for draining.

Description

Fuel pump assembly with noise reduction function

Technical Field

The utility model relates to the technical field of fuel pumps, in particular to a fuel pump assembly with a noise reduction function.

Background

The fuel pump assembly is used as fuel transportation equipment and mainly comprises a fuel pump, a flange cover and a pressure release valve, wherein the flange cover is connected with the fuel tank after the fuel pump is connected with the flange cover, and the fuel pump assembly is installed in the fuel tank. When the fuel pump assembly is used, fuel in the fuel tank can be sucked into the fuel pump through the fuel pump assembly, then the fuel is pressurized, and then the pressurized fuel is conveyed to an engine through an oil conveying pipe communicated with the fuel pump, so that the fuel is provided for the work of the engine. In the pressurization process, when the oil pressure in the oil delivery pipe is too high, the pressure release valve can discharge redundant fuel oil and return the redundant fuel oil to the oil tank, so that the oil pressure in the oil delivery pipe is prevented from being too high, and the normal use of the oil delivery pipe is ensured.

In the fuel pump assembly use, very big noise often can appear, after the operation of making an uproar falls in a series of, like change or fastening each part, adjusting blade concentricity etc. but still there is the noise in the use, and noise intermittent type nature takes place moreover, has influenced user experience to a great extent. In addition, because the noise of the surrounding environment can also influence the driving of the driver during the running process of the vehicle, the noise of the fuel pump assembly can influence the driving of the driver and the surrounding environment, and the noise pollution is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fuel pump assembly with a noise reduction function, and aims to solve the problem that the noise of the fuel pump assembly in the prior art is high in the using process.

The basic scheme provided by the utility model is as follows: fuel pump assembly with function of making an uproar is fallen, including casing, mounting bracket and blind flange, the casing passes through the mounting bracket to be connected with the blind flange, is provided with the pump body in the casing, and the exit end of the pump body is connected with out oil nozzle through an oil pipe, and it has the relief valve to go out oil nozzle intercommunication, wherein: the fuel oil outlet pipe is provided with a blocking part and a drainage piece for guiding the fuel oil discharged by the pressure relief valve to the oil outlet pipe for discharging.

The basic scheme has the beneficial effects that: the noise is generated mostly due to damage or improper adjustment of parts, but noise is still found when a brand-new fuel pump assembly works, so that the noise generation analysis is carried out on all the parts of the fuel pump assembly, and finally, the discharged fuel is directly sprayed onto the side wall of the fuel tank when the pressure relief valve carries out pressure relief, and the noise is generated when the fuel impacts the side wall of the fuel tank due to the fact that the space in the fuel tank is large.

Therefore, in this scheme, utilize newly-increased drainage piece to lead the exhaust fuel of relief valve to the stop part and discharge, the fuel will be towards the stop part blowout under the effect of drainage piece, and the stop part will block spun fuel, prevents that spun fuel from assaulting the oil tank lateral wall, and the fuel sprays just can not produce the noise on the stop part yet. Moreover, the fuel injected to the blocking part flows back to the fuel in the fuel tank along the blocking part, and the noise caused by the dropping of the fuel from a high position can be avoided.

Further, the drainage piece is provided with the export including the installation shell of laying the relief valve, installation shell lower extreme, and the export sets up towards going out oil pipe. Has the advantages that: in this scheme, the installation of relief valve in the fuel pump assembly has been realized in setting up of installation shell, and the export of installing the shell towards the mode that goes out oil pipe and set up, can lead the fuel to an oil pipe blowout to realized falling the function of making an uproar, simple structure.

Further, the bottom surface of the mounting case is inclined downward. Has the advantages that: in this scheme, the bottom surface that the downward sloping set up is favorable to the discharge of the interior fuel of installation shell.

Further, the installation shell is detachably connected with the lower surface of the flange cover. Has the advantages that: in this scheme, will install the shell setting at the blind flange lower surface, shortened the oil duct distance between oil pipe and the relief valve to the realization is for the quick pressure release of relief valve, and can dismantle the change of the convenient installation shell of mode of connection.

Furthermore, the lower end of the flange cover is provided with a connecting sheet, a clamping groove is formed in the connecting sheet, and a clamping block matched with the clamping groove is arranged on the outer side wall of the mounting shell. Has the advantages that: in this scheme, through the setting of draw-in groove and connection piece realized the dismantlement of installation shell on the blind flange and connect simple structure.

Furthermore, a sealing ring is sleeved outside the upper end of the pressure release valve and abuts against the inner surface of the connecting sheet. Has the advantages that: in this scheme, the setting of sealing washer can prevent that the fuel from revealing from the relief valve outside.

Further, the outer surface of the pressure release valve is provided with an annular installation part, and the lower surface of the installation part is abutted to the upper end of the installation shell. Has the advantages that: in this scheme, the setting of installation department can realize placing simple structure, the pressure release valve fast in the installation shell.

Further, a support ring is arranged between the upper surface of the mounting part and the sealing ring. Has the advantages that: the setting up of support ring is convenient adjusts the height at sealing washer place.

Further, the installation department sets up with relief valve surface integrated into one piece. Has the advantages that: integrated into one piece's convenient processing of setting up in this scheme.

Further, the outlet extends upwardly outside the mounting housing. Has the advantages that: in this scheme, extend to the outside mode of installation shell upwards with the export and make the exit area increase, the velocity of flow of fuel when just also having reduced the relief valve discharge fuel to just also reduced the impact wear of fuel to going out the oil pipe.

Further, the blocking part is an oil outlet pipe. Has the advantages that: in this scheme, select existing oil pipe in the fuel pump assembly and use as the stop part, need not additionally to set up the stop part, practiced thrift the cost.

Drawings

FIG. 1 is a schematic view of an embodiment of a fuel pump assembly having noise reduction features of the present invention;

fig. 2 is a cross-sectional view of fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the oil outlet pipe comprises a flange cover 1, an oil outlet nozzle 11, a mounting frame 2, a shell 3, a mounting shell 4, an outlet 41, a sealing ring 42, a support ring 43, a mounting part 44 and an oil outlet pipe 5.

The embodiment is basically as shown in the attached figures 1 and 2: fuel pump assembly with function of making an uproar is fallen, including casing 3, mounting bracket 2 and flange lid 1, casing 3 passes through mounting bracket 2 and is connected with the flange lid, is provided with the pump body in the casing 3, and the 41 ends in export of the pump body are connected with out oil nozzle 11 through

play oil pipe

5, and 11 intercommunications in play oil nozzle have the relief valve, still including the stop part with be used for leading the exhaust drainage piece of stop part with the exhaust fuel of relief valve. In this embodiment, the blocking portion is an existing oil outlet pipe 5 of the fuel pump assembly, and in other embodiments, the blocking portion may also be other existing components in the fuel pump assembly, such as a fine filter and the like.

Specifically, in this embodiment, as shown in fig. 2, the drainage member includes an installation shell 4 for placing the pressure relief valve, an outlet 41 is provided at the lower end of the installation shell 4, the outlet 41 is provided toward the oil outlet pipe 5, and the outlet 41 extends upward to the outside of the installation shell 4. The bottom surface of the mounting case 4 is inclined downward, and is used for the fuel discharged from the relief valve to flow out of the mounting case 4 quickly.

In order to shorten the oil duct distance between play oil pipe 5 and the relief valve to the realization is for the quick pressure release of relief valve, in this embodiment, still set up installation shell 4 and can dismantle with 1 lower surface of blind flange and be connected, it is concrete, 1 lower extreme of blind flange is provided with the connection piece, is provided with the draw-in groove on the connection piece, 4 lateral walls of installation shell are provided with the joint piece that matches with the draw-in groove, in other embodiments, installation shell 4 can also realize dismantling through threaded connection's mode with the blind flange and be connected.

In order to prevent fuel from leaking from the outside of the pressure relief valve, in this embodiment, a sealing ring 42 is further sleeved outside the upper end of the pressure relief valve, the sealing ring 42 abuts against the inner surface of the connecting piece, specifically, an annular mounting portion 44 is arranged on the outer surface of the pressure relief valve, the mounting portion 44 and the outer surface of the pressure relief valve are integrally formed, the lower surface of the mounting portion 44 abuts against the upper end of the mounting shell 4, and a support ring 43 is arranged between the upper surface of the mounting portion 44 and the sealing ring 42.

The specific implementation process is as follows: before the fuel pump assembly is used, the fuel pump assembly needs to be installed in a fuel tank, and the fuel outlet nozzle 11 is connected to an engine through a fuel conveying pipe. When the fuel pump is used, the pump body works to suck fuel in the fuel tank into the pump body, then pressurization is carried out, and the pressurized fuel is sent to the fuel outlet nozzle 11 through the fuel outlet pipe 5 and then sent to an engine through the fuel outlet nozzle 11 and the fuel delivery pipe. When the oil pressure is too high, the relief valve discharges the excessive fuel, and in the discharging process, the excessive fuel flows out of the relief valve, flows into the mounting shell 4 below the relief valve, then flows out of the outlet 41 of the mounting shell 4 towards the oil outlet pipe 5, flows down along the oil outlet pipe 5, and then returns to the oil tank.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art, and it will be appreciated by those skilled in the art that the present invention has been made available to those skilled in the art after the filing date or priority date, and that the present invention may be implemented by those skilled in the art by applying ordinary skill in the art, without departing from the spirit and scope of the present invention. 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

1. Fuel pump assembly with function of making an uproar is fallen, including casing, mounting bracket and blind flange, the casing pass through the mounting bracket with the blind flange is connected, be provided with the pump body in the casing, the exit end of the pump body is connected with out oil nozzle through an oil pipe, it has relief valve, its characterized in that to go out oil nozzle intercommunication: the fuel oil pressure relief valve also comprises a blocking part and a drainage piece used for guiding the fuel oil discharged by the pressure relief valve to the blocking part for discharging.

2. The fuel pump assembly with noise reduction of claim 1, wherein: the drainage piece is including laying the installation shell of relief valve, the installation shell lower extreme is provided with the export, the export orientation the stop part sets up.

3. The fuel pump assembly with noise reduction of claim 2, wherein: the bottom surface of the mounting shell is arranged in a downward inclined mode.

4. The fuel pump assembly with noise reduction of claim 3, wherein: the mounting shell is detachably connected with the lower surface of the flange cover.

5. The fuel pump assembly with noise reduction of claim 4, wherein: the flange cover is characterized in that a connecting piece is arranged at the lower end of the flange cover, a clamping groove is formed in the connecting piece, and a clamping block matched with the clamping groove is arranged on the outer side wall of the mounting shell.

6. The fuel pump assembly with noise reduction of claim 5, wherein: and a sealing ring is sleeved outside the upper end of the pressure release valve and abuts against the inner surface of the connecting sheet.

7. The fuel pump assembly with noise reduction of claim 6, wherein: the outer surface of the pressure release valve is provided with an annular installation part, and the lower surface of the installation part is abutted to the upper end of the installation shell.

8. The fuel pump assembly with noise reduction of claim 7, wherein: a support ring is arranged between the upper surface of the mounting part and the seal ring.

9. The fuel pump assembly with a noise reduction function according to claim 7 or 8, wherein: the installation department with relief valve surface integrated into one piece sets up.

10. The fuel pump assembly with noise reduction of claim 2, wherein: the outlet of the mounting shell extends upwards to the outside of the mounting shell.

11. The fuel pump assembly with a noise reduction function according to claim 1 or 2, wherein: the blocking part is the oil outlet pipe.

12. The fuel pump assembly with noise reduction of claim 9, wherein: the outlet of the mounting shell extends upwards to the outside of the mounting shell.