CN207974904U - Secondary fuel oil filter - Google Patents
Secondary fuel oil filter Download PDFInfo
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- CN207974904U CN207974904U CN201820243848.0U CN201820243848U CN207974904U CN 207974904 U CN207974904 U CN 207974904U CN 201820243848 U CN201820243848 U CN 201820243848U CN 207974904 U CN207974904 U CN 207974904U
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- filter
- oil
- end cover
- exhaust
- secondary fuel
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Abstract
The utility model discloses a kind of secondary fuel oil filters, belong to filter technical field, including filter block, filter body and filter core, and the lower part of the filter body is set as one with the filter block；The filter block is equipped with oil input channel, oil road and oil expulsion channel, and the oil input channel is connected to the cavity between the filter body and the filter core；The filter core includes upper end cover, bottom end cover and central tube；Oil outlet is offered on the central tube, the central tube is connected to the oil road；The first sealing element is equipped between the bottom end cover and the oil road；The secondary fuel oil filter further includes the exhaust passage through the upper end cover, the central tube and the bottom end cover, the upper end of the exhaust passage is located at the top of the filter body, the lower end of the exhaust passage is connected to the oil expulsion channel, and exhaust check valve is equipped in the exhaust passage.The utility model can effectively prevent gas to be gathered in secondary fuel oil filter, it is ensured that engine normally starts.
Description
Technical field
The utility model belongs to filter technical field more particularly to a kind of secondary fuel oil filter.
Background technology
Secondary fuel oil filter is arranged in the rear side of oil transfer pump mostly, which is positive pressure side, compares fuel preliminary filter filter fuel
In larger particles, the more small particle of secondary fuel oil filter main filtration.
Currently, existing secondary fuel oil filter includes mainly filter block, upper cover, shell and the filter core being arranged in chamber inside the shell,
Upper cover, which is arranged between the top of shell, the lower end and shell of filter core, is equipped with elastic component, by the elastic force of elastic component by filter core top
It leans against on lid, upper cover is installed on filter block.
As emission request is higher and higher so that worse and worse, fuel oil is through filtering for the permeability of filter element filtering material
When core filters, filter core inevitably largely separates the gas in fuel oil so that a large amount of gas of accumulation in secondary fuel oil filter
Body, and keep the fuel oil of secondary fuel oil filter seldom.In engine start, due to Low oil Fuel in secondary fuel oil filter, it is often necessary to
Start it is several under, until the gas gathered in secondary fuel oil filter is discharged, engine could start and work normally, and cause to start
Machine parking difficulty in starting.
In addition, the shell of the secondary fuel oil filter of this structure is connect once being formed with upper cover, can not just dismount, therefore can only
Using primary.In this way when safeguarding, shell must be replaced together with filter core, and not only maintenance cost is high, but also waste of resource.This
Outside, when replacing filter core, part fuel oil can flow to and cause environmental pollution in external environment.
Utility model content
Technical problem to be solved in the utility model is：A kind of secondary fuel oil filter is provided, gas can be effectively prevent to exist
Accumulation in secondary fuel oil filter, it is ensured that engine normally starts.
In order to solve the above technical problems, the technical solution of the utility model is：Secondary fuel oil filter, including filter block, filter body and
Filter core, the lower part of the filter body are set as one with the filter block；The filter block is equipped with oil input channel, oil road and oil expulsion channel, institute
State the cavity that oil input channel is connected between the filter body and the filter core；The filter core include upper end cover, bottom end cover and be set to institute
State the central tube between upper end cover and the bottom end cover；Oil outlet is offered on the central tube, described in the central tube connection
Oil road；The first sealing element is equipped between the bottom end cover and the oil road；The secondary fuel oil filter further includes running through institute
The exhaust passage of upper end cover, the central tube and the bottom end cover is stated, the upper end of the exhaust passage is located at the upper of the filter body
The lower end in portion, the exhaust passage is connected to the oil expulsion channel, and exhaust check valve is equipped in the exhaust passage.
As an improvement the periphery of the central tube is equipped with multiple support plates for being used to support filter paper, it is described fuel-displaced
Mouth is set to the top of the central tube.
As an improvement the exhaust passage includes the first exhaust pipeline and second exhaust pipe being sealed connected together
Road, the first exhaust pipeline are fixedly installed in the top of the filter body, and the first exhaust pipeline passes through the upper end cover simultaneously
It extends in the central tube, the second sealing element, institute is equipped between the first exhaust pipeline and the middle part of the upper end cover
Exhaust check valve is stated in the first exhaust pipeline；The second exhaust pipeline passes through the bottom end cover and is connected to the row
Oil duct.
As a further improvement, the input end of the first exhaust pipeline is gas collection portion, the first exhaust pipeline
Outlet end is exhaust portion, and the internal diameter in the gas collection portion is more than the internal diameter of the exhaust portion.
As an improvement the exhaust check valve is Duckbill one-way valves.
As an improvement the filter body includes shell and is sealingly mounted at the upper cover of the shell upper, the shell
Lower part and the filter block be set as one.
As an improvement the lower surface of the bottom end cover is raised with stretch into the oil expulsion channel first, described first
Raised that third sealing element is equipped between the oil expulsion channel, the lower part of first protrusion has stretch into the oil road the
Two protrusions are equipped with first sealing element between second protrusion and the oil road.
As a further improvement, the upper cover is equipped with external screw thread, and the top of the shell is equipped with and the external screw thread phase
The internal thread of adaptation is equipped with the 4th sealing element between the upper cover and the shell.
As a further improvement, the exhaust passage clamps on the cover.
As an improvement the lower surface of the upper end cover and the upper surface of the bottom end cover are equipped with and the central tube
Matched annular protrusion.
After using above-mentioned technical proposal, the utility model has the beneficial effects that：
Since secondary fuel oil filter devises the exhaust passage through the upper end cover, the central tube and the bottom end cover,
The upper end of the exhaust passage is located at the top of the filter body, and the lower end of the exhaust passage is connected to the oil expulsion channel, the row
It is gathered in filter body top after gas evolution, in pressure because secondary fuel oil filter is in positive pressure side equipped with exhaust check valve in gas channel
Effect is lower to open exhaust check valve, and the gas of such top aggregation can enter exhaust passage, and oil is discharged by oil expulsion channel after downlink
Case can effectively prevent gas to be gathered in secondary fuel oil filter, it is ensured that engine normally starts.
Since the periphery of the central tube is equipped with multiple support plates for being used to support filter paper, the oil outlet is set to described
The top of central tube, thus the fuel oil entered from oil input channel is formed after being filtered through filter paper between support plate and filter paper
Cavity goes upward to the oil outlet of central tube, then the inner downlink through central tube enters oil road, in this way using entire filter paper into
Row filtering, can be improved the utilization rate of filter paper.
Since the exhaust passage includes the first exhaust pipeline being sealed connected together and second exhaust pipeline, will be vented
Channel is designed to separate structure, facilitates installation and manufacture.
Since the input end of the first exhaust pipeline is gas collection portion, the outlet end of the first exhaust pipeline is exhaust
Portion, the internal diameter in the gas collection portion are more than the internal diameter of the exhaust portion, gas are facilitated to be discharged.
Since the filter body includes shell and is sealingly mounted at the upper cover on the top of the shell, in this way by upper cover from shell
On remove after, then filter core removed from filter block, it may be convenient to filter core be dismounted, maintained easily, cost is saved.
Since the lower surface of the bottom end cover has the first protrusion for stretching into the oil expulsion channel, thus works as and remove filter core
When, the fuel oil in shell can flow back to fuel tank through oil expulsion channel, avoid fuel oil and flow in external environment and pollute.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
In figure：1- filter blocks, 11- shells, 12- oil roads, 13- oil expulsion channels, 14- oil input channels, 2- upper covers, 3- filter cores, on 31-
End cap, 32- bottom end covers, the first protrusions of 321-, the second protrusions of 322-, 33- central tubes, 331- support plates, 332- oil outlets, 34--
Annular protrusion, 35- annular protrusions, 36- filter paper, the 4th sealing rings of 4-, 5- exhaust passages, 51- exhaust check valves, 52- first rows
Feed channel, 521- gas collections portion, 522- exhaust portions, 53- second exhaust pipelines, 54- sealing rings, 6- sealing rings, the first sealing rings of 7-,
8- third sealing rings；
Hollow arrow in figure represents the trend of fuel oil；Filled arrows in figure represent the trend of gas.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figure 1, a kind of secondary fuel oil filter, including filter block 1, filter body and filter core 3, filter body include that shell 11 and sealing are pacified
Upper cover 2 mounted in the top of shell 11, lower part and the filter block 1 of shell 11 are set as one, it is preferred that upper cover 2 is equipped with external screw thread, outside
The top of shell 11 is equipped with internal thread compatible with external screw thread, and the 4th sealing element is equipped between upper cover 2 and shell 11.4th is close
It is preferably the 4th sealing ring 4 to seal element, and certainly, the 4th sealing element can also select its that those skilled in the art can realize
Its mode, such as oil sealing etc., details are not described herein.
Filter block 1 is equipped with oil input channel 14, oil road 12 and oil expulsion channel 13, and oil input channel 14 is connected between filter body and filter core 3
Cavity.
Filter core 3 includes upper end cover 31, bottom end cover 32 and the central tube 33 between upper end cover 31 and bottom end cover 32.
Secondary fuel oil filter further includes the exhaust passage 5 through upper end cover 31, central tube 33 and bottom end cover 32, exhaust passage 5
Upper end be located at the top of filter body, the lower end of exhaust passage 5 is connected to oil expulsion channel 13, exhaust check valve 51 is equipped in exhaust passage 5,
Exhaust check valve 51 is preferably Duckbill one-way valves.
Exhaust passage 5 can be overall structure, or separate structure in order to facilitate the installation of and manufactures, it is preferred that row
Gas channel 5 includes the first exhaust pipeline 52 that is sealed connected together and second exhaust pipeline 53, first exhaust pipeline 52 and the
Sealing ring 54 is equipped between two discharge ducts 53, the upper end of first exhaust pipeline 52 is fixedly installed in the top of the filter body, excellent
Choosing, first exhaust pipeline 52 is installed in upper cover 2, and first exhaust pipeline 52 passes through upper end cover 31 and extends to central tube 33
It is interior, the second sealing element is equipped between first exhaust pipeline 52 and the middle part of upper end cover 31, the second sealing element preferably seals
Ring 6, exhaust check valve 51 are set in first exhaust pipeline 52；Second exhaust pipeline 53 passes through bottom end cover 32 and is connected to oil expulsion channel
13。
It is discharged in order to facilitate gas, the input end of first exhaust pipeline 52 is gas collection portion 521, and first exhaust pipeline 52 goes out
Mouth end is exhaust portion 522, and the internal diameter in gas collection portion 521 is more than the internal diameter of exhaust portion 522.
The lower surface of upper end cover 31 be equipped with 33 matched annular protrusion 34 of central tube, the upper surface of bottom end cover 32 is equipped with
With 33 matched annular protrusion 35 of central tube.
In order to improve the utilization rate of filter paper 36, the periphery of central tube 33 is equipped with multiple support plates for being used to support filter paper 36
331, the top of central tube 33 offers oil outlet 332, and central tube 33 is connected to oil road 12.
The lower surface of bottom end cover 32, which has, stretches into the first protrusion 321 of oil expulsion channel 13, the first protrusion 321 and oil expulsion channel 13 it
Between be equipped with third sealing element, the lower part of the first protrusion 321 has the second protrusion 322 for stretching into oil road 12, the second protrusion 322
The first sealing element is equipped between oil road 12.First sealing element is preferably the first sealing ring 7, and third sealing element is preferred
For third sealing ring 8, certainly, the first sealing element and third sealing element can also select those skilled in the art that can realize
Other manner, such as oil sealing etc., details are not described herein.
Its operation principle is as follows：
Fuel oil enters from oil input channel 14 in shell 11, after the filtering of filter paper 36, the shape between support plate 331 and filter paper 36
At cavity go upward to the oil outlet 332 of central tube 33, then the inner downlink through central tube 33 enters oil road 12, in this way can profit
It is filtered with entire filter paper 36, the utilization rate of filter paper 36 can be improved；Because secondary fuel oil filter is in positive pressure side, gather after gas evolution
Collection opens exhaust check valve 51 under pressure on filter body top, and the gas of such top aggregation can enter exhaust passage 5,
Fuel tank is discharged by oil expulsion channel 13 after downlink, gas can be effectively prevent to be gathered in secondary fuel oil filter, it is ensured that engine is normal
Start.
Using a period of time, when being replaced to filter core 3, upper cover 2 is backed out from shell 11, then by filter core 3 from filter
It is removed on seat 1, then then upper cover 2 is threaded on shell 11, can be facilitated on filter block 1 by new filter core again
Filter core is dismounted, maintain easily, save cost；In the process, when removing filter core 3, the fuel oil in shell 11
Fuel tank can be flowed back to through oil expulsion channel 13, avoid fuel oil and flow in external environment and pollute.
Secondary fuel oil filter provided by the utility model can effectively prevent gas to be gathered in secondary fuel oil filter, it is ensured that hair
Motivation normally starts；Easily filter core can be dismounted, be maintained easily, save cost；Fuel oil is can effectively avoid to flow to outside
It is polluted in portion's environment.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. secondary fuel oil filter, including filter block, filter body and filter core, which is characterized in that the lower part of the filter body is set as with the filter block
One；The filter block is equipped with oil input channel, oil road and oil expulsion channel, and the oil input channel is connected between the filter body and the filter core
Cavity；
The filter core includes upper end cover, bottom end cover and the central tube between the upper end cover and the bottom end cover；It is described
Oil outlet is offered on central tube, the central tube is connected to the oil road；It is equipped between the bottom end cover and the oil road
First sealing element；
The secondary fuel oil filter further includes the exhaust passage through the upper end cover, the central tube and the bottom end cover, described
The upper end of exhaust passage is located at the top of the filter body, and the lower end of the exhaust passage is connected to the oil expulsion channel, and the exhaust is logical
Exhaust check valve is equipped in road.
2. secondary fuel oil filter according to claim 1, which is characterized in that the periphery of the central tube is equipped with multiple be used for
The support plate of filter paper, the oil outlet is supported to be set to the top of the central tube.
3. secondary fuel oil filter according to claim 1, which is characterized in that the exhaust passage includes being sealed connected together
First exhaust pipeline and second exhaust pipeline, the first exhaust pipeline be fixedly installed in the top of the filter body, described
One discharge duct passes through the upper end cover and extends in the central tube, in the first exhaust pipeline and the upper end cover
The second sealing element is equipped between portion, the exhaust check valve is set in the first exhaust pipeline；The second exhaust pipeline
Across the bottom end cover and it is connected to the oil expulsion channel.
4. secondary fuel oil filter according to claim 3, which is characterized in that the input end of the first exhaust pipeline is gas collection
The outlet end in portion, the first exhaust pipeline is exhaust portion, and the internal diameter in the gas collection portion is more than the internal diameter of the exhaust portion.
5. secondary fuel oil filter according to claim 1, which is characterized in that the exhaust check valve is Duckbill one-way valves.
6. according to the secondary fuel oil filter described in any one of claim 1 to 5 claim, which is characterized in that the filter body
Including shell and the upper cover for being sealingly mounted at the shell upper, lower part and the filter block of the shell are set as one.
7. secondary fuel oil filter according to claim 6, which is characterized in that the lower surface of the bottom end cover is described with stretching into
First protrusion of oil expulsion channel is equipped with third sealing element between first protrusion and the oil expulsion channel, first protrusion
Lower part has the second protrusion for stretching into the oil road, and being equipped with described first between second protrusion and the oil road seals
Element.
8. secondary fuel oil filter according to claim 7, which is characterized in that the upper cover is equipped with external screw thread, the shell
Top is equipped with internal thread compatible with the external screw thread, and the 4th sealing element is equipped between the upper cover and the shell.
9. secondary fuel oil filter according to claim 6, which is characterized in that the exhaust passage clamps on the cover.
10. secondary fuel oil filter according to claim 1, which is characterized in that the lower surface of the upper end cover and the lower end
The upper surface of lid is equipped with and the matched annular protrusion of the central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820243848.0U CN207974904U (en) | 2018-02-09 | 2018-02-09 | Secondary fuel oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820243848.0U CN207974904U (en) | 2018-02-09 | 2018-02-09 | Secondary fuel oil filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207974904U true CN207974904U (en) | 2018-10-16 |
Family
ID=63767653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820243848.0U Active CN207974904U (en) | 2018-02-09 | 2018-02-09 | Secondary fuel oil filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207974904U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792539A (en) * | 2019-11-25 | 2020-02-14 | 浙江威泰汽配有限公司 | Fuel oil filtering filter element with exhaust valve structure |
| CN111472904A (en) * | 2019-01-24 | 2020-07-31 | 河北亿利橡塑集团有限公司 | Exhaust structure of fuel prefilter |
| CN113482816A (en) * | 2021-08-16 | 2021-10-08 | 一汽解放汽车有限公司 | Fuel filter |
| CN113982801A (en) * | 2021-12-02 | 2022-01-28 | 浙江吉利控股集团有限公司 | Methanol filter and vehicle |
| CN114458497A (en) * | 2022-02-16 | 2022-05-10 | 一汽解放汽车有限公司 | Fuel filter and engine oil supply system |
-
2018
- 2018-02-09 CN CN201820243848.0U patent/CN207974904U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472904A (en) * | 2019-01-24 | 2020-07-31 | 河北亿利橡塑集团有限公司 | Exhaust structure of fuel prefilter |
| CN110792539A (en) * | 2019-11-25 | 2020-02-14 | 浙江威泰汽配有限公司 | Fuel oil filtering filter element with exhaust valve structure |
| CN110792539B (en) * | 2019-11-25 | 2023-11-21 | 浙江威泰汽配有限公司 | Fuel oil filtering filter element with exhaust valve structure |
| CN113482816A (en) * | 2021-08-16 | 2021-10-08 | 一汽解放汽车有限公司 | Fuel filter |
| CN113982801A (en) * | 2021-12-02 | 2022-01-28 | 浙江吉利控股集团有限公司 | Methanol filter and vehicle |
| CN114458497A (en) * | 2022-02-16 | 2022-05-10 | 一汽解放汽车有限公司 | Fuel filter and engine oil supply system |
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