CN207989204U - The diesel engine fuel oil pipeline structure of automatic-discharging - Google Patents
The diesel engine fuel oil pipeline structure of automatic-discharging Download PDFInfo
- Publication number
- CN207989204U CN207989204U CN201820306674.8U CN201820306674U CN207989204U CN 207989204 U CN207989204 U CN 207989204U CN 201820306674 U CN201820306674 U CN 201820306674U CN 207989204 U CN207989204 U CN 207989204U
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- Prior art keywords
- oil
- fuel
- bolt body
- diesel engine
- pump
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Abstract
The utility model discloses a kind of diesel engine fuel oil pipeline structures of automatic-discharging, including fuel tank, fuel filter and injection pump, electronics oil transfer pump is accessed between fuel tank and fuel filter, the pedestal of fuel filter is equipped with exhaust outlet, exhaust outlet internal portion of being present is connected to the oil inlet on pedestal, exhaust outlet is equipped with check valve, and check valve is connected to by oil return pipe with fuel tank, and the Opening pressure of check valve is less than the pump oil pressure of electronics oil transfer pump.The fuel pipe structure need not dismantle fuel pipe can automatic-discharging.
Description
Technical field
The utility model is related to diesel engine fuel oil pipeline field, more particularly to the diesel engine fuel oil pipeline of a kind of automatic-discharging
Structure.
Background technology
Diesel engine is installed on vehicle, is connected after fuel pipe or when fuel filter is replaced in maintenance, fuel pipe or
There are large quantity of air in filter, if these air enter HP jetting pump, may cause diesel engine starting difficult problem, very
The flame-out failure into causing diesel engine that can not start or operational process, so needing to exclude the air in fuel pipe.Mesh
Before, by opening the vent valve 10 (referring to Fig. 1) on fuel filter, oil transportation hand pump pump oil is pressed, until vent valve exit
(pump out come be full oil) excludes air until not having bubble to emerge.
But in said program, 1, need manually pump oil, oil transportation hand pump installation site are restricted.If fuel pipe
Road is longer, and pump oil emptying time is long, and efficiency is low；2, it needs to tear fuel pipe (vent valve on fuel filter) open；3, pump oil is arranged
During gas, part fuel oil is flowed out with air, is polluted the environment；4, fuel pipe is dissolved in fuel oil after diesel engine stop
Air can be precipitated, this partial air can not be discharged, into injection pump after injection pump is caused greatly to negatively affect.
The information for being disclosed in the background technology part is merely intended to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition has been existing well known to persons skilled in the art
Technology.
Utility model content
The purpose of this utility model is to provide a kind of diesel engine fuel oil pipeline structures of automatic-discharging, need not dismantle combustion
Oil pipe line can automatic-discharging.
To achieve the above object, the utility model provides a kind of diesel engine fuel oil pipeline structure of automatic-discharging, including
Fuel tank, fuel filter and injection pump access electronics oil transfer pump, on the pedestal of fuel filter between fuel tank and fuel filter
Equipped with exhaust outlet, exhaust outlet internal portion of being present is connected to the oil inlet on pedestal, and exhaust outlet is equipped with check valve, and check valve passes through
Oil return pipe is connected to fuel tank, and the Opening pressure of check valve is less than the pump oil pressure of electronics oil transfer pump.
Preferably, check valve includes bolt body, and bolt body is twisted and is located on exhaust outlet, and being internally provided with for bolt body is logical
The fore-end in road, channel in-and-out bolt ontology is in shrink mouth shape, and spring and ball valve are provided in channel, and spring drives ball valve to abut
At necking, the side wall of bolt body is equipped with the through-hole of through channel, and oil return pipe is connected by articulated joint with bolt body.
Preferably, the tail end of bolt body, which is twisted, is equipped with spiro column, and the front end of spiro column has extended segment, an end cap of spring
It is connected on extended segment, the other end of spring is socketed with ball valve seat, and ball valve passes through sphere-contact with ball valve seat.
Compared with prior art, the utility model has the advantages that：By being set on the pedestal of fuel filter
It sets exhaust outlet to communicate with oil inlet, and check valve is installed in exhaust outlet, start (after ignition switch starts) before diesel engine starting
Electronics oil transfer pump pump oil, electronics oil transportation pump operation are automatically stopped afterwards for a period of time, can be by air and fuel oil under pressure
It is discharged from exhaust outlet, most flows back to fuel tank through oil return pipe afterwards and then reaches automatic-discharging purpose, unidirectional valve opening pressure is less than electronics
Oil transfer pump pump oil pressure so that air and fuel oil flow back to fuel tank, and prevents filtered fuel oil from being sucked from oil return line and sprays
Oil pump.
Description of the drawings
Fig. 1 is the vertical view of existing fuel filter；
Fig. 2 is the vertical view of the diesel engine fuel oil pipeline structure intermediate fuel oil filter of automatic-discharging according to the present utility model
Figure；
Fig. 3 is that the part of the diesel engine fuel oil pipeline structure intermediate fuel oil filter of automatic-discharging according to the present utility model is put
Big figure.
Specific implementation mode
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality
Novel protection domain is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other component parts.
As shown in Figure 2 to Figure 3, according to a kind of diesel engine fuel oil pipe of automatic-discharging of specific embodiment of the present invention
Line structure, including fuel tank, fuel filter 1 and injection pump, wherein fuel tank and injection pump are not shown, the diesel engine combustion of the present embodiment
The key of oil pipe line structure is to access electronics oil transfer pump between fuel tank and fuel filter 1, be set on the pedestal of fuel filter 1
There is an exhaust outlet, exhaust outlet internal portion of being present is connected to the oil inlet 11 on pedestal and (certainly, is equipped with oil outlet 12 on pedestal), row
Gas port is equipped with check valve 13, and check valve 13 is connected to by oil return pipe with fuel tank, and the Opening pressure of check valve 13 is defeated less than electronics
The pump oil pressure of oil pump.
In said program, accessed in diesel engine fuel oil pipeline using electronics oil transfer pump, (the ignition switch before diesel engine starting
After startup) start electronics oil transfer pump, electronics oil transportation pump operation is automatically stopped afterwards for a period of time, in this way, by the way that check valve 13 is arranged
Opening pressure be less than the pump oil pressure of electronics oil transfer pump, air and fuel oil can pass through oil return pipe stream by electronics oil transfer pump pump oil
Oil return box reaches emptying purpose in turn, manually pump oil need not have fuel oil outflow pollution ring without tearing fuel pipe open
Border.In the present solution, fuel oil and air can be passed through list by the pump oil pressure that the Opening pressure of check valve 13 is less than electronics oil transfer pump
Fuel tank is flowed back to valve, and prevents filtered fuel oil from sucking injection pump from oil return pipe.
As a kind of preferred embodiment, referring to Fig. 3, check valve 13 includes bolt body 21, and bolt body 21 twists the row of being located at
On gas port, bolt body 21 is internally provided with channel 23, and the fore-end of 23 in-and-out bolt ontology 21 of channel is in shrink mouth shape, channel
Spring and ball valve 22 are provided in 23, spring driving ball valve 22 is connected at necking 27, and the side wall of bolt body 21, which is equipped with, to be passed through
The through-hole of circulation passage 23, oil return pipe are connected by articulated joint and bolt body 21, and it is existing to that is to say that bolt body 21 is equivalent to
Cross oil draining bolt.
As a kind of preferred embodiment, the tail end of bolt body 21, which is twisted, is equipped with spiro column 24, and the front end of spiro column 24 has
One end of extended segment 25, spring is socketed on extended segment 25, and the other end of spring is socketed with ball valve seat 26, ball valve 22 and ball valve seat
26 pass through sphere-contact.
In said program, a kind of specific check valve 13 is provided, by the shape that check valve 13 was arranged to oil draining bolt
Unidirectional opening valve can be realized in the inside of bolt body 21 setting channel, spring, ball valve in formula, the convenient connection with oil return pipe
The purpose of door, it is simple in structure.
To sum up, the diesel engine fuel oil pipeline structure of the automatic-discharging of the present embodiment, by the way that fuel filter is transformed,
Exhaust outlet is arranged on the pedestal of fuel filter to communicate with oil inlet, and when exhaust outlet installs check valve, and diesel engine is run,
The suction of oil transfer pump makes fuel pipe be in negative pressure state, and after diesel engine stop, the air being dissolved in fuel oil can be precipitated,
Start electronics oil transfer pump pump oil (after ignition switch starts) before diesel engine starting, electronics oil transportation pump operation stops automatically after for a period of time
Only, air and fuel oil can be discharged from exhaust outlet under pressure, most flows back to fuel tank through oil return pipe afterwards and then reaches emptying
Purpose, unidirectional valve opening pressure be less than electronics oil transfer pump pump oil pressure, so that air and fuel oil flow back to fuel tank, and prevent without
The fuel oil of filtering sucks injection pump from oil return line.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
Many change and variations.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (3)
1. a kind of diesel engine fuel oil pipeline structure of automatic-discharging, including fuel tank, fuel filter and injection pump, feature exist
In the pedestal of access electronics oil transfer pump between the fuel tank and the fuel filter, the fuel filter is equipped with exhaust
Mouthful, the exhaust outlet is connected to inside the pedestal with the oil inlet on the pedestal, and the exhaust outlet is equipped with check valve, institute
It states check valve to be connected to the fuel tank by oil return pipe, the Opening pressure of the check valve is less than the pump oil of the electronics oil transfer pump
Pressure.
2. the diesel engine fuel oil pipeline structure of automatic-discharging according to claim 1, which is characterized in that the check valve packet
Bolt body is included, the bolt body is twisted and is located on the exhaust outlet, and the bolt body is internally provided with channel, the channel
The fore-end for penetrating through the bolt body is in shrink mouth shape, and spring and ball valve are provided in the channel, and the spring drives institute
It states ball valve to be connected at the necking, the side wall of the bolt body is equipped with the through-hole for penetrating through the channel, the oil return pipe
It is connected with the bolt body by articulated joint.
3. the diesel engine fuel oil pipeline structure of automatic-discharging according to claim 2, which is characterized in that the bolt body
Tail end twist and be equipped with spiro column, the front end of the spiro column has extended segment, and one end of the spring is socketed in the extended segment
On, the other end of the spring is socketed with ball valve seat, and the ball valve passes through sphere-contact with the ball valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820306674.8U CN207989204U (en) | 2018-03-06 | 2018-03-06 | The diesel engine fuel oil pipeline structure of automatic-discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820306674.8U CN207989204U (en) | 2018-03-06 | 2018-03-06 | The diesel engine fuel oil pipeline structure of automatic-discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989204U true CN207989204U (en) | 2018-10-19 |
Family
ID=63825269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820306674.8U Active CN207989204U (en) | 2018-03-06 | 2018-03-06 | The diesel engine fuel oil pipeline structure of automatic-discharging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533428A (en) * | 2018-03-06 | 2018-09-14 | 广西玉柴机器股份有限公司 | The diesel engine fuel oil pipeline structure of automatic-discharging |
-
2018
- 2018-03-06 CN CN201820306674.8U patent/CN207989204U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533428A (en) * | 2018-03-06 | 2018-09-14 | 广西玉柴机器股份有限公司 | The diesel engine fuel oil pipeline structure of automatic-discharging |
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