CN220227056U - Exhaust structure of negative pressure end fuel filter - Google Patents
Exhaust structure of negative pressure end fuel filter Download PDFInfo
- Publication number
- CN220227056U CN220227056U CN202321717078.6U CN202321717078U CN220227056U CN 220227056 U CN220227056 U CN 220227056U CN 202321717078 U CN202321717078 U CN 202321717078U CN 220227056 U CN220227056 U CN 220227056U
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- CN
- China
- Prior art keywords
- filter
- exhaust
- valve core
- case
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000000446 fuel Substances 0.000 title claims abstract description 23
- 239000011162 core material Substances 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract description 4
- 239000000295 fuel oil Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 23
- 239000002283 diesel fuel Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model provides an exhaust structure of negative pressure end fuel filter, including the filter base, be provided with entry and export on the filter base, be provided with the filter core in the filter base, the top of filter core is provided with exhaust structure, exhaust structure includes the mounting hole, be provided with the case support in the mounting hole, be provided with the inlet port in the bottom of case support, be provided with the case mounting hole in the top of case support, be provided with the case in the case mounting hole, the density of case material is greater than air density and is less than the fuel density, be provided with the exhaust hole in the filter base of case top. The gas generated in the filter element enters from the air inlet hole of the valve element bracket, the valve element is pushed upwards, the outside of the filter is discharged through the exhaust hole, and the gas is not discharged to the lower end oil way, so that the problem of gas accumulation can be fundamentally solved, the exhaust effect is improved, the difficulty in starting the engine is reduced, the operation stability is improved, and the environment pollution caused by the discharge of fuel oil can be avoided when the gas is discharged.
Description
Technical Field
The utility model relates to the field of machinery, in particular to a filtering device, and particularly relates to an exhaust structure of a negative pressure end fuel filter.
Background
In the prior art, a fuel filter is arranged in front of a fuel pump, namely a commonly called negative pressure end, when fuel flows into the filter from an oil way, the volume of the fuel can be obviously changed, dissolved gases in the fuel can be released, the gases are accumulated on the dirty side of the filter, the more the gases are accumulated along with the time, the normal operation of an engine is affected, when the engine is restarted after being stopped, a large amount of gases are accumulated in the filter, so that the fuel is not smoothly supplied, the engine is difficult to start and unstable to operate, and a device is needed to remove the accumulated gases. The exhaust structure of the traditional filter is that a tiny through hole is formed in the end cover of the filter element, or a backflow pipe is added in the filter element, but the exhaust structure can not radically remove the collected gas, but can discharge the gas to the lower end oil way, so that the gas collection problem can not be fundamentally solved.
In addition, the fuel filter assembly is composed of a filter and a base, and the filter element needs to be replaced periodically for consuming accessories. In order to ensure the normal operation of the engine after the filter element is newly replaced, the sealing bolt is required to be opened, the gas in the filter is discharged through the oil pump on the base, and part of fuel is discharged when the gas is discharged, so that the environment is polluted, and the resource is wasted.
Disclosure of Invention
The utility model aims to provide an exhaust structure of a negative pressure end fuel filter, which aims to solve the technical problems of difficult engine starting, unstable operation and fuel overflow pollution during filter element replacement caused by gas accumulation of the negative pressure end fuel filter in the prior art.
The utility model relates to an exhaust structure of a negative pressure end fuel filter, which comprises a filter base, wherein an inlet and an outlet are arranged on the filter base, a filter element is arranged in the filter base, an exhaust structure is arranged in the filter base and above the filter element, the exhaust structure comprises a mounting hole, the mounting hole is arranged in the filter base, a valve core support is arranged in the mounting hole, an air inlet is arranged in the bottom of the valve core support, a valve core mounting hole is arranged in the top of the valve core support, the valve core mounting hole is communicated with the air inlet, a valve core is arranged in the valve core mounting hole, the density of valve core materials is greater than the air density and less than the fuel density, an exhaust hole is arranged in the filter base above the valve core, the exhaust hole is communicated with the outer side of the filter base, the air inlet is sealed when the valve core is positioned at the lower side, and the exhaust hole is sealed when the valve core is positioned at the upper side.
Further, a water collecting cavity is formed in the bottom of the filter base.
Compared with the prior art, the utility model has positive and obvious effects. The gas generated in the filter element enters from the air inlet hole of the valve element bracket, the valve element is pushed upwards, the outside of the filter is discharged through the exhaust hole, and the gas is not discharged to the lower end oil way, so that the problem of gas accumulation can be fundamentally solved, the exhaust effect is improved, the difficulty in starting the engine is reduced, the operation stability is improved, and the environment pollution caused by the discharge of fuel oil can be avoided when the gas is discharged.
Drawings
FIG. 1 is a schematic cross-sectional view of an exhaust structure of a negative pressure side fuel filter of the present utility model.
Fig. 2 is an enlarged partial schematic view of fig. 1.
Detailed Description
The present utility model is further described below with reference to the drawings and examples, but the present utility model is not limited to the examples, and all the similar structures and similar variations using the present utility model should be included in the protection scope of the present utility model. The use of the directions of up, down, front, back, left, right, etc. in the present utility model is only for convenience of description, and is not a limitation of the technical scheme of the present utility model.
As shown in fig. 1 and 2, the exhaust structure of the negative pressure end fuel filter of the utility model comprises a filter base 1, wherein an inlet and an outlet are arranged on the filter base 1, a filter element 2 is arranged in the filter base 1, an exhaust structure 3 is arranged above the filter element 2 in the filter base 1, the exhaust structure 3 comprises a mounting hole 4, the mounting hole 4 is arranged in the filter base 1, a valve core bracket 5 is arranged in the mounting hole 4, an air inlet hole 6 is arranged in the bottom of the valve core bracket 5, a valve core mounting hole is arranged in the top of the valve core bracket 5, the valve core mounting hole is communicated with the air inlet hole 6, a valve core 8 is arranged in the valve core mounting hole, the density of the valve core 8 material is greater than the air density and less than the fuel density, an exhaust hole 7 is arranged in the filter base 1 above the valve core 8, the exhaust hole 7 is communicated with the outer side of the filter base 1, the air inlet hole 6 is sealed when the valve core 8 is positioned at the lower side, and the exhaust hole 7 is sealed when the valve core 8 is positioned at the upper side.
Further, a water collecting cavity is formed in the bottom of the filter base 1.
Specifically, the filter base 1, the inlet, the outlet, the filter element 2, the valve core 8, the water collecting cavity and the like in this embodiment all adopt well-known schemes in the prior art, and those skilled in the art will understand the schemes and will not be described here again.
The working principle of the embodiment is as follows: when the filter element is in operation, gas generated in the filter element 2 enters from the air inlet hole 6 of the valve element bracket 5, the valve element 8 is pushed upwards, the outside of the filter is discharged through the air outlet hole 7, instead of discharging the gas to the lower end oil way, so that the problem of gas accumulation can be fundamentally solved, the air discharging effect is improved, the difficulty of starting an engine is reduced, the operation stability is improved, and the environment pollution caused by fuel oil discharge can be avoided when the gas is discharged. The density of the valve core 8 material is between the air density and the diesel oil density, and the valve core 8 is resistant to diesel oil soaking, when gas is generated in the filter, the gas pushes up the valve core 8 to be discharged, the diesel oil liquid level rises along with the discharge of the gas, and when the gas is discharged, the valve core 8 moves to the upper side to seal the exhaust hole 7 under the buoyancy effect of the diesel oil. When the engine stops working, the diesel oil liquid level falls back, the valve core 8 moves to the lower side under the action of gravity to seal the air inlet 6 on the valve core bracket 5, and the tightness of the engine oil supply pipeline in the stop state is ensured.
Claims (2)
1. The utility model provides an exhaust structure of negative pressure end fuel filter, includes the filter base, be provided with entry and export on the filter base, be provided with the filter core in the filter base, its characterized in that: the filter comprises a filter base, a filter core, a valve core support, a valve core mounting hole, a valve core, an exhaust hole, a valve core material, an exhaust valve, a valve core sealing structure and a valve core sealing structure.
2. The exhaust structure of a negative pressure side fuel filter according to claim 1, wherein: the bottom of the filter base is provided with a water collecting cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321717078.6U CN220227056U (en) | 2023-07-03 | 2023-07-03 | Exhaust structure of negative pressure end fuel filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321717078.6U CN220227056U (en) | 2023-07-03 | 2023-07-03 | Exhaust structure of negative pressure end fuel filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227056U true CN220227056U (en) | 2023-12-22 |
Family
ID=89182855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321717078.6U Active CN220227056U (en) | 2023-07-03 | 2023-07-03 | Exhaust structure of negative pressure end fuel filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227056U (en) |
-
2023
- 2023-07-03 CN CN202321717078.6U patent/CN220227056U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |